JP6844152B2 - Image projection system, information processing device, image projection method and program - Google Patents

Description

The present invention relates to an image projection system, an information processing device, an image projection method and a program.

In recent years, digital signage that distributes content such as moving images to an image projection device such as a projector and projects the content on a large screen installed outdoors, in a store, in a public space, or the like has been widely used. In the case of digital signage, content suitable for time and place can be projected in real time, so high advertising effectiveness can be expected.

On the other hand, in order to realize a large-scale digital signage using the above-mentioned image projection device, a flat surface having a certain size is required as a projection target. For this reason, in the case of digital signage using an image projection device, it is necessary to install a large screen in advance or to perform projection using an integrated plane such as the side wall surface of a building, which is feasible. There is a problem that there are limited places.

On the other hand, one digital signage can be realized by using a combination of a plurality of surfaces included in a predetermined area, such as a window glass (light transmitting surface) of a building (particularly a middle-high-rise building). If possible, the scope of application of digital signage can be expanded.

The present invention has been made in view of the above problems, and an object of the present invention is to realize digital signage in which a plurality of surfaces are combined.

The image projection system according to each embodiment of the present invention has the following configuration. That is,
A dividing means for dividing one image into a plurality of divided images based on the positions and sizes of a plurality of surfaces included in a predetermined area, and
A correction means for correcting the divided image and
A calculation means for calculating correction parameters for correcting the divided image for each of the plurality of surfaces, and
A determination means for determining the context of the date and time when the divided image was corrected by the correction means and the date and time when the correction parameter was calculated by the calculation means.
When the determination means determines that the correction parameter has been calculated by the calculation means after the divided image has been corrected by the correction means, the divided image is used with the correction parameter calculated by the calculation means. With the regenerating means for regenerating the divided image by re-correcting the image.
It has a control means for controlling the plurality of divided images to be projected onto each of the projection planes corresponding to the plurality of planes via the projection device corresponding to each of the plurality of planes.

According to each embodiment of the present invention, it is possible to realize digital signage by combining a plurality of surfaces.

It is a figure which shows the application example of an image projection system. It is a figure for demonstrating the operation of each signage apparatus arranged at the position corresponding to each window glass of a building. It is a figure which shows an example of the system configuration of an image projection system. It is a figure which shows an example of the hardware configuration of an information processing apparatus. It is a figure which shows an example of the signage target information. It is a figure which shows an example of image information. It is a figure which shows an example of schedule information. It is a flowchart which shows the flow of signage processing. It is a figure which shows the functional structure of the calibration part of an information processing apparatus. It is a sequence diagram of the first calibration process. It is a figure which shows an example of the screen of the information processing apparatus which is displayed at the time of the 1st calibration process. It is a figure which shows an example of the calibration pattern image projected at the time of the 1st calibration process. It is a figure which shows another example of the calibration pattern image projected at the time of the 1st calibration process. It is a sequence diagram of the second calibration process. It is a figure which shows an example of the white image projected at the time of the 2nd calibration process. It is a figure which shows the functional structure of the image processing part of an information processing apparatus. It is a figure which shows the specific example of image processing. It is a flowchart which shows the flow of image processing. It is a flowchart which shows the flow of the 1st division processing. It is a figure which shows an example of the 1st division processing. It is a figure which shows the functional structure of the signage control part of an information processing apparatus. It is a flowchart which shows the flow of the signage control process (start). It is a figure which shows an example of required time information and instruction timing for each signage device. It is a flowchart which shows the flow of the signage control process (end). It is a figure which shows an example of required time information and instruction timing for each signage device. It is a figure which shows the functional structure of the monitoring part of an information processing apparatus. It is a flowchart which shows the flow of a monitoring process.

Hereinafter, details of each embodiment will be described with reference to the accompanying drawings. In the description of the specification and the drawings according to each embodiment, the components having substantially the same functional configuration are designated by the same reference numerals to omit duplicate explanations.

[First Embodiment]
<1. Application example of image projection system>
First, an application example of the image projection system according to the first embodiment will be described. FIG. 1 is a diagram showing an application example of an image projection system. The example of FIG. 1 shows how a large-scale digital signage is realized by using a plurality of windowpanes (light transmitting surfaces) attached to the outer surface of a building 110, which is a middle-rise building, in combination.

As shown in FIG. 1, a plurality of windowpanes (window glass group 120) are attached to the outer surface of the building 110 on the road side at predetermined intervals (in the example of FIG. 1, 30 windows). Glass). In the image projection system according to the first embodiment, for each of the plurality of windowpanes (window glass group 120) attached to the outer surface of the building 110, each projection moving image included in the projection moving image group 130 from the inside. Project the image.

As a result, according to the image projection system according to the first embodiment, a large-scale digital signage consisting of an area of 30 windowpanes (the example of FIG. 1 shows a scene in which a huge tree is displayed. Can be realized. In addition, digital signage can be realized in a relatively conspicuous place such as an outer surface on the road side. That is, it is possible to realize digital signage with high advertising effect.

Further, according to the image projection system according to the first embodiment, as compared with the conventional digital signage that uses a large screen installed in advance, a side wall surface of a building without a window glass, or the like, it is digital. The scope of application of signage can be expanded.

Further, in the image projection system according to the first embodiment, the operation of the illumination device group 140 already installed on the window glass is also controlled. As a result, according to the image projection system according to the first embodiment, it is possible to control the illumination device group 140 according to the projection of the projection moving image group 130, and realize digital signage with a high visual effect. be able to.

<2. Operation of signage device>
Next, regarding the operation of each signage device (in this embodiment, the projector (projection device), the electric screen (projection surface), and the illumination device) constituting the image projection system according to the first embodiment explain.

FIG. 2 is a diagram for explaining the operation of each signage device arranged at a position corresponding to each window glass of the building. (A) to (d) of FIG. 2A show the operation of the projector and the electric screen among the signage devices arranged inside each window glass of the building 110.

As shown in FIG. 2A and FIG. 2A, projectors are vertically arranged inside each window glass of the building 110, and two projectors (upper projectors) are arranged for one window glass. And the lower projector) is used to project a moving image for projection. As a result, an appropriate moving image for projection can be projected even when the size of the window glass is large.

Further, as shown in FIG. 2A and FIG. 2B, an electric screen is arranged inside each window glass of the building 110. When projecting a moving image for projection using a projector, the light transmittance is changed by turning on the electric screen, and each window glass is made semi-transparent. The electric screen (projection surface) forms a light transmitting surface together with the window glass (projection target).

FIG. 2C of FIG. 2A shows a state in which the lamps of the upper projector and the lower projector are turned on after the electric screen is turned on. The upper projector has a projection range on the upper side of the window glass, and the lower projector has a projection range on the lower side of the window glass. The upper projector and the lower projector are adjusted so that a part of the projection range overlaps with each other. That is, in the present embodiment, the projection of the moving image for projection into the projection range according to the size of the window glass is realized by the two projectors.

FIG. 2D of FIG. 2A shows a state in which a moving image for projection is projected by the upper projector and the lower projector. In the image projection system according to the present embodiment, one digital signage is realized as a whole by projecting a moving image for projection on each electric screen corresponding to each window glass included in the window glass group 120. .. Therefore, for each electric screen corresponding to each window glass, the moving image for projection generated based on the moving image of a part of the original moving image (moving image provided by the advertiser) is moved up and down. It will be divided into two projectors and projected by two projectors.

As shown in FIG. 2B, in the image projection system according to the first embodiment, the illumination device group 140 (illumination devices 140_1 to 140_6) is in a state where the projection of the projection moving image group 130 is completed. ) Is turned on and the electric screen is controlled to be turned off.

That is, in the image projection system according to the first embodiment, the upper projector, the lower projector, the electric screen, and the illumination device group 140 operate in conjunction with each other.

<3. System configuration of image projection system>
Next, the system configuration of the image projection system according to the first embodiment will be described. FIG. 3 is a diagram showing an example of the system configuration of the image projection system. As shown in FIG. 3, the image projection system 300 includes projectors 310_1a to 310_30b, external memories 320_1a to 320_30b, electric screens 330_1 to 330_30, control devices 340, and illumination devices 140_1 to 140_6. Further, the image projection system 300 includes a time server 360, an information processing device 370, an image pickup device 381, and a color luminance meter 382.

The projectors 310_1a to 310_30b, the control device 340, the time server 360, and the information processing device 370 are connected via a network 390.

The projectors 310_1a to 310_30b are arranged vertically inside each of the window glass groups 120 attached to a predetermined area on the outer surface of the building 110. As described above, since 30 windowpanes are attached to a predetermined area on the outer surface of the building 110, 60 projectors are arranged in the present embodiment.

Each of the projectors 310_1a to 310_30b executes the first calibration process using the calibration pattern image so that the moving image for projection is projected without distortion in the projection range corresponding to the size of the window glass to be projected. .. Further, the projectors 310_1a to 310_30b each execute a second calibration process using a white image so that a moving image for projection is projected on the window glass to be projected with a predetermined color.

Further, the projectors 310_1a to 310_30b read out a designated projection moving image from the projection moving images stored in the external memories 320_1a to 320_30b, respectively, based on the projection start instruction from the information processing device 370. Further, the projectors 310_1a to 310_30b project the projected moving images read out by the projectors 310_1a to 310_30b onto the electric screen corresponding to the window glass to be projected.

The external memories 320_1a to 320_30b are connected to the projectors 310_1a to 310_30b, respectively. The external memories 320_1a to 320_30b store moving images for projection projected by the projectors 310_1a to 310_30b, respectively. The external memories 320_1a to 320_30b referred to here include, for example, a USB (Universal Serial Bus) memory and the like.

The electric screens 330_1 to 330_30 are arranged inside each of the window glass groups 120 included in a predetermined area on the outer surface of the building 110. As described above, since 30 windowpanes are attached to the predetermined area on the outer surface of the building 110, 30 electric screens are arranged in the present embodiment.

The electric screens 330_1 to 330_30 are connected to the control device 340 via a power cable, and the control device 340 individually controls the ON state and the OFF state. When the electric screens 330_1 to 330_30 are controlled to the ON state by the control device 340, the light transmittance of the light transmitting surface is lowered and the electric screen becomes translucent. On the other hand, when the electric screens 330_1 to 330_30 are controlled to the OFF state by the control device 340, the light transmittance of the light transmitting surface is increased and the electric screen becomes transparent.

The control device 340 turns on the electric screens 330_1 to 330_30 based on the screen ON instruction from the information processing device 370. Further, the control device 340 turns off the electric screens 330_1 to 330_30 based on the screen OFF instruction from the information processing device 370.

Further, the control device 340 turns on the illumination devices 140_1 to 140_6 based on the illumination ON instruction from the information processing device 370. Further, the control device 340 turns off the illumination devices 140_1 to 140_6 based on the illumination OFF instruction from the information processing device 370.

The illumination devices 140_1 to 140_6 are connected to the control device 340 via a power cable, and the control device 340 controls the ON state and the OFF state.

The time server 360 provides time information to the information processing device 370 in order to synchronize the time between the projectors 310_1a to 310_30b and the information processing device 370.

The information processing device 370 is a device for controlling the signage processing in the image projection system 300. A calibration program, an image processing program, a signage control program, and a monitoring program are installed in the information processing apparatus 370. By executing these programs, the information processing apparatus 370 functions as a calibration unit 371, an image processing unit 372, a signage control unit 373, and a monitoring unit 374.

The calibration unit 371 executes the first calibration process and the second calibration process together with the projectors 310_1a to 310_30b. Further, the calibration unit 371 functions as a calculation means, and by executing the first calibration process, calculates the correction parameters used when generating the projection moving images projected by the projectors 310_1a to 310_30b, respectively.

Further, the calibration unit 371 calculates the RGB level to be set in the projectors 310_1a to 310_30b by executing the second calibration process together with the projectors 310_1a to 310_30b.

The image processing unit 372 is an example of the dividing means. The image processing unit 372 reads out the signage target information stored in the signage target information management unit 375 and the image information stored in the image information management unit 376, and displays a moving image for projection from the original moving image provided by the advertiser. Generate an image. The signage target refers to a building 110 in which a large-scale digital signage is realized by the image projection system 300. Further, the signage target information includes information such as the position and size of each window glass of the window glass group 120 included in a predetermined area on the outer surface of the building 110. Further, the image information includes information for managing various images used when generating a moving image for projection, correction parameters, and the like.

The image processing unit 372 uses the correction parameters calculated by the calibration unit 371 when generating the moving image for projection.

Further, the image processing unit 372 stores the divided still image (details will be described later) generated in the process of generating the moving image for projection in the image information management unit 376. Further, the image processing unit 372 transmits each projection moving image of the generated projection moving image group to the projectors 310_1a to 310_30b, respectively. As a result, the projectors 310_1a to 310_30b store each projection moving image in the external memories 320_1a to 320_30b, respectively.

The signage control unit 373 is an example of the control means. The signage control unit 373 performs the signage control process based on the schedule information stored in the schedule information management unit 377. Specifically, the signage control unit 373 transmits a projection start instruction to each of the projectors 310_1a to 310_30b according to the projection start time. Further, the signage control unit 373 transmits a screen ON instruction to the electric screens 330_1 to 330_30 according to the projection start time. Further, the signage control unit 373 transmits an illumination OFF instruction to the illumination devices 140_1 to 140_6 according to the projection start time.

The monitoring unit 374 monitors the image information stored in the image information management unit 376, and regenerates the projection moving image when it becomes necessary to regenerate the projection moving image.

When the projectors 310_1a to 310_30b each execute the first calibration process, the image pickup apparatus 381 captures the calibration pattern images projected by the projectors 310_1a to 310_30b and transmits them to the information processing apparatus 370. The image pickup device 381 and the information processing device 370 are connected via, for example, a USB cable.

The color brightness meter 382 measures the color temperature of the white image projected by each of the projectors 310_1a to 310_30b when each of the projectors 310_1a to 310_30b executes the second calibration process, and transmits the measurement result to the information processing apparatus 370. To do. The color luminance meter 382 and the information processing device 370 are connected via, for example, a USB cable.

<4. Information processing device hardware configuration>
Next, the hardware configuration of the information processing apparatus 370 will be described. FIG. 4 is a diagram showing an example of the hardware configuration of the information processing device.

As shown in FIG. 4, the information processing device 370 includes a CPU (Central Processing Unit) 401, a ROM (Read Only Memory) 402, and a RAM (Random Access Memory) 403. The CPU 401, ROM 402, and RAM 403 form a so-called computer. Further, the information processing device 370 includes an auxiliary storage unit 404, a display unit 405, an input unit 406, a network I / F (Interface) unit 407, and a USB I / F unit 408. The hardware of the information processing device 370 is connected to each other via the bus 409.

The CPU 401 is a device that executes various programs (for example, a calibration program, an image processing program, a signage control program, a monitoring program, etc.) stored in the auxiliary storage unit 404.

ROM 402 is a non-volatile main storage device. The ROM 402 stores various programs, data, and the like necessary for the CPU 401 to execute the various programs stored in the auxiliary storage unit 404. Specifically, it stores boot programs such as BIOS (Basic Input / Output System) and EFI (Extensible Firmware Interface).

The RAM 403 is a volatile main storage device such as a DRAM (Dynamic Random Access Memory) or a SRAM (Static Random Access Memory). The RAM 403 provides a work area that is expanded when various programs stored in the auxiliary storage unit 404 are executed by the CPU 401.

The auxiliary storage unit 404 is an auxiliary storage device that stores various programs executed by the CPU 401 and various information used when the various programs are executed. The various information stored in the auxiliary storage unit 404 includes signage target information, image information, schedule information, various information managed by the image information, correction parameters, and the like. The signage target information management unit 375, the image information management unit 376, and the schedule information management unit 377 are realized by the auxiliary storage unit 404.

The display unit 405 is a display device that displays various screens. The input unit 406 is an input device for inputting various information to the information processing device 370. The network I / F unit 407 is an interface device for connecting to the network 390. The information processing device 370 communicates with the projectors 310_1a to 310_30b, the control device 340, and the time server 360 via the network I / F unit 407.

The USB I / F unit 408 is an interface device for connecting a USB cable. The information processing device 370 transmits / receives data to / from the image pickup device 381 and the color luminance meter 382 via the USB I / F unit 408.

<5. Information stored in each management unit>
Next, various information (signage target information, image information, schedule information) stored in each management unit (signage target information management unit 375, image information management unit 376, schedule information management unit 377) of the information processing apparatus 370 will be described. To do.

(1) Signage target information First, the signage target information stored in the signage target information management unit 375 will be described. FIG. 5 is a diagram showing an example of signage target information. As shown in FIG. 5A, the signage target information 500 is generated for each signage target. In the present embodiment, the signage target ID of the building 110 is "S001".

Further, as shown in FIG. 5A, the signage target information 500 includes "floor", "window ID", "window information", "projector ID", "electric screen ID", and "information items". The lighting device ID "is included.

In the "floor", a floor number indicating a floor to which the window glass group 120 included in a predetermined area on the outer surface of the building 110 is attached is stored.

In the "window ID", an identifier for identifying each window glass of the window glass group 120 included in a predetermined area on the outer surface of the building 110 is stored.

"Window information" further includes "position", "horizontal size", and "vertical size". Here, the "position", "horizontal size", and "vertical size" of the window glass included in the "window information" will be described with reference to FIG. 5 (b).

As shown in FIG. 5B, the image projection system 300 realizes a large-scale digital signage by utilizing a predetermined area 510 on the outer surface of the building 110. At this time, the image projection system 300 defines a reference point (origin) for specifying the layout of each window glass included in the predetermined area 510 and a reference axis (x-axis, y-axis).

In FIG. 5B, point 520 indicates the origin in the predetermined region 510. Further, the axis 530 indicates the x-axis when the point 520 is the origin in the predetermined area 510, and the axis 540 indicates the y-axis when the point 520 is the origin in the predetermined area 510.

As shown in FIG. 5B, the layout (position, horizontal size, vertical size) of each window glass is uniquely specified by defining a predetermined area 510, an origin 520, an x-axis 530, and a y-axis 540. Can be done.

Returning to the description of FIG. 5 (a). The "position" stores coordinates indicating the position of the lower left corner of each window glass in a predetermined area 510 on the outer surface of the building 110. In the case of FIG. 5A, the coordinates of the position of the lower left corner of the window glass with window ID = "W201" are the origin (0,0).

The horizontal length (width) of each window glass is stored in the "horizontal size". For example, if the window glass of the window ID = "W201", the coordinates of the position of the lower left corner (0, 0), the coordinates of the position of the lower right corner is _(x 12, 0). Therefore, the horizontal size = "x ₁₂ ". Further, in the case of a window glass having a window ID = "W202", the coordinates of the position of the lower left corner are (x ₂₁ and 0), and the coordinates of the position of the lower right corner are (x ₂₂ and 0). Therefore, the horizontal size = "x ₂₂ −x ₂₁ ".

The vertical length (height) of each window glass is stored in the "vertical size". For example, if the window glass of the window ID = "W201", the coordinates of the position of the lower left corner (0, 0), the coordinates of the position of the upper left corner _{(0, y 12).} Therefore, the vertical size = "y ₁₂ ". Further, in the case of a window glass having a window ID = "W301", the coordinates of the position of the lower left corner are (0, y ₂₁ ), and the coordinates of the position of the upper left corner are (0, y ₂₂ ). Therefore, the vertical size = "y ₂₂ −y ₂₁ ".

The "projector ID" stores an identifier for identifying a projector arranged at a position corresponding to each window glass. In the example of FIG. 5A, the projector identified by the projector ID = "PJ201A" and "PJ201B" is arranged at the position corresponding to the window glass identified by the window ID = "W201". Shown.

The "electric screen ID" stores an identifier for identifying an electric screen arranged at a position corresponding to each window glass. The example of FIG. 5A shows that the electric screen identified by the electric screen ID = "SC201" is arranged at the position corresponding to the window glass identified by the window ID = "W201". There is.

The "illumination device ID" stores an identifier for identifying the illumination device arranged at a position corresponding to any window glass on each floor. The example of FIG. 5A shows that the illumination device identified by the illumination device ID = "E200" is arranged on the floor identified by the floor = "2F".

(2) Image information Next, the image information stored in the image information management unit 376 will be described. FIG. 6 is a diagram showing an example of image information. As shown in FIG. 6, the image information 600 includes "moving image ID", "signage target ID", "window ID", and "projector ID" as information items. Further, the image information 600 includes "correction parameter ID", "calculation date and time", "divided still image group ID", "projection moving image ID", and "generation date and time" as information items.

The "moving image ID" stores an identifier for identifying the original moving image provided by the advertiser. The example of FIG. 6 shows that the moving image identified by "C100" as the moving image ID is stored in the image information management unit 376.

The "signage target ID" stores an identifier for identifying the building 110 in which large-scale digital signage is realized based on the moving image provided by the advertiser. The example of FIG. 6 shows that large-scale digital signage is realized in the building 110 identified by the signage target ID = "S001" based on the moving image identified by the moving image ID = "C100". There is.

In the "window ID", an identifier for identifying each window glass of the window glass group 120 included in the predetermined area 510 on the outer surface of the building 110 identified by the signage target ID = "S001" is stored.

The "projector ID" stores an identifier for identifying a projector arranged at a position corresponding to the window glass identified by the window ID.

In the "correction parameter ID", an identifier for identifying the correction parameter calculated by the calibration unit 371 is stored. As described above, when the first calibration process is executed, the calibration unit 371 calculates the correction parameter for each window glass, so that the correction parameter ID is stored in association with the window ID. The date and time when the correction parameter was calculated is stored in the "calculated date and time".

The "divided still image group ID" is used to identify the divided still image group generated in the process of generating the moving image group for projection based on the moving image identified by the moving image ID = "C100". The identifier is stored.

The "projection moving image ID" has an identifier for identifying each projection moving image included in the projection moving image group, which is generated based on the moving image identified by the moving image ID = "C100". It is stored.

In the "generation date and time", the date and time when each projection moving image identified by the projection moving image ID is generated is stored.

The example of FIG. 6 shows that the moving image IDs for projection = "M201A", "M201B", ... Are generated from the moving image with the moving image ID = "C100".

Further, in the example of FIG. 6, the projection moving image ID = "M201A" is projected by the projector with the projector ID = "PJ201A" arranged at the position corresponding to the window glass of the window ID = "W201". Indicates that it will be projected.

Further, in the example of FIG. 6, when the projection moving image ID = "M201A" is generated, the correction parameter (correction parameter ID = "P201") is calculated on "May 25, 2016". It shows that.

Further, the example of FIG. 6 shows that the corrected divided still image group ID = "C201" is corrected by the correction parameter (correction parameter ID = "P201"). Further, in the example of FIG. 6, based on the divided still image group ID = "C201", the projection moving image ID = "M201A" and "M201B" are set on "June 10, 2016". It shows that the moving images for projection were generated respectively.

(3) Schedule information Next, the schedule information stored in the schedule information management unit 377 will be described. FIG. 7 is a diagram showing an example of schedule information. As shown in FIG. 7, the schedule information 700 is generated for each signage target. Further, as shown in FIG. 7, the schedule information 700 includes "time" and "signage device" as information items.

In "time", a time zone in which the window glass group 120 can be used as digital signage in the building 110 identified by the signage target ID = "S001" is described. The example of FIG. 7 shows that the window glass group 120 can be used as digital signage in the time zone from 10:00 to 22:00.

The "signage device" further includes a "projector", an "electric screen", and an "illumination device". In the "projector", the projection time zone of the moving image for projection by the projectors 310_a to 310_30b is described. The example of FIG. 7 shows that the projection moving image group generated based on the moving image ID = "C200" is projected between 18:00 and 19:00. Further, it is shown that the projection moving image group generated based on the moving image ID = "C100" is projected between 20:00 and 21:00.

In the "electric screen", a time zone in which the electric screens 330_1 to 330_30 are turned on is described. The time zone in which the electric screens 330_1 to 330_30 are turned on is the same time zone as the projection time zone of the moving image group for projection by the projectors 310_1a to 310_30b. Therefore, the electric screens 330_1 to 330_30 are turned on from 18:00 to 19:00 and from 20:00 to 21:00.

In the "illumination device", a time zone in which the illumination device 140_1 to 140_6 is turned on is described. In the present embodiment, the illumination devices 140_1 to 140_6 are turned on outside the projection time of the moving image for projection by the projectors 310_1a to 310_30b. Therefore, the illumination devices 140_1 to 140_6 are turned on from 17:00 to 18:00, from 19:00 to 20:00, and from 21:00 to 22:00.

<6. Flow of signage processing in image projection system>
Next, the flow of signage processing in the image projection system 300 will be described. FIG. 8 is a flowchart showing the flow of signage processing. When the installation of the image projection system 300 is completed in the building 110, the image projection system 300 executes the signage process shown in FIG.

Specifically, in step S801, the image projection system 300 performs calibration processing (first calibration processing, second calibration processing, etc.) of the projectors 310_1a to 310_30b.

In step S802, the image projection system 300 performs image processing (generation of projection moving images ("M201A" to "M705B"), transmission of projection moving images to the projectors 310_1a to 310_30b, and the like).

In step S803, the image projection system 300 performs the signage control process. Specifically, the image projection system 300 performs projection of a moving image group for projection by projectors 310_1a to 310_30b, ON / OFF control of electric screens 330_1 to 330_30, and ON / OFF control of illumination devices 140_1 to 140_6.

In the image projection system 300, the monitoring process is executed in parallel while the signage process shown in FIG. 8 is being executed.

<7. Details of calibration process>
Next, the details of the calibration process (step S801) in the image projection system 300 will be described.

(1) Functional configuration of the calibration unit First, the functional configuration of the calibration unit 371 of the information processing apparatus 370 that executes the calibration process will be described. FIG. 9 is a diagram showing a functional configuration of a calibration unit of an information processing apparatus.

As shown in FIG. 9, the calibration unit 371 has a first calibration unit 911 and a second calibration unit 912. The first calibration unit 911 is activated at the time of the first calibration process and executes various processes. Specifically, the first calibration unit 911 calculates the correction parameters used when generating the moving image for projection. Further, the first calibration unit 911 stores the calculated correction parameter in the image information management unit 376, and stores the correction parameter ID indicating the calculated correction parameter and the calculated date and time in the image information 600 in association with the window ID. .. As a result, the image processing unit 372 can generate a moving image for projection without distortion when projected by the projectors 310_1a to 310_30b.

The second calibration unit 912 is activated at the time of the second calibration process and executes various processes. Specifically, the second proofreading unit 912 sets the RGB level for the projectors 310_1a to 310_30b so that the moving image for projection is projected with a predetermined color.

(2) Flow of First Calibration Process Next, the details of the first calibration process will be described with reference to FIGS. 11 to 13 based on the sequence diagram of FIG. 10. FIG. 10 is a sequence diagram of the first calibration process.

As shown in FIG. 10, in step S1001, the operator 1000 inputs an activation instruction for activating the first calibration unit 911 to the information processing apparatus 370.

In step S1002, in response to the start instruction input by the operator 1000, the first calibration unit 911 is activated, and the display unit 405 of the information processing apparatus 370 displays the target to be executed by the first calibration process. Display a selection screen for 1000 to select.

In step S1003, the operator 1000 selects the window glass on which the first calibration process is to be executed from the selection screen displayed on the display unit 405.

Depending on the windowpane being selected by the operator 1000, the first calibration unit 911 identifies the projector located at the position corresponding to the selected windowpane. Then, in steps S1004 and S1005, the first calibration unit 911 transmits a lamp ON instruction to each of the identified projectors.

FIG. 11 is a diagram showing an example of a screen of the information processing apparatus displayed during the first calibration process. When the first calibration unit 911 is activated, the selection screen 1100 is displayed on the display unit 405 of the information processing apparatus 370. As shown in FIG. 11, the selection screen 1100 includes the layout 1110 of the window glass group 120 of the building 110.

The operator 1000 selects the window glass to be subjected to the first calibration process by pressing the rectangular button indicating the window glass in the layout 1110 and pressing the completion button 1120. The example of FIG. 11 shows that the rectangular button 1111 is pressed and the completion button 1120 is pressed.

The window glass specified by the rectangular button 1111 is a window glass 1128 having a window ID = "W703". As shown on the lower side of FIG. 11, a projector 310_28a (projector ID = "PJ703A") and a projector 310_28b (projector ID = "PJ703B") are arranged at positions corresponding to the window glass 1128.

Therefore, in step S1004, the first calibration unit 911 transmits a lamp ON instruction to the projector 310_28a. Further, in step S1005, the first calibration unit 911 transmits a lamp ON instruction to the projector 310_28b. At this point, it is assumed that the electric screen 330_28 (electric screen ID = "SC703") of the window glass 1128 is in the ON state.

Subsequently, in step S1006, the first calibration unit 911 generates a calibration pattern image. The first calibration unit 911 generates two different calibration pattern images as calibration pattern images.

In step S1007, the first calibration unit 911 transmits the first calibration pattern image to the projector 310_28a. Further, in step S1008, the first calibration unit 911 transmits a second calibration pattern image to the projector 310_28b.

In step S1009, the projector 310_28a projects the first calibration pattern image transmitted from the first calibration unit 911. Further, in step S1010, the projector 310_28b projects a second calibration pattern image transmitted from the first calibration unit 911.

In step S1011, the operator 1000 inputs a shooting instruction to the imaging device 381 in order to capture the projected first and second calibration pattern images using the imaging device 381.

In step S1012, the image pickup apparatus 381 executes an imaging process on the projected first and second calibration pattern images, and in step S1013, the imaging apparatus 381 transmits the imaging result to the information processing apparatus 370.

FIG. 12 is a diagram showing an example of a calibration pattern image projected during the first calibration process. As shown in FIG. 12, the projector 310_28a projects the first calibration pattern image, and the projector 310_28b projects the second calibration pattern image. The operator 1000 captures the first and second calibration pattern images using the imaging device 381, and transmits the captured results to the information processing device 370.

Returning to the description of FIG. In step S1014, the operator 1000 inputs a replacement instruction for swapping the first calibration pattern image and the second calibration pattern image.

In step S1015, the first calibration unit 911 transmits the second calibration pattern image to the projector 310_28a in response to the replacement instruction. Further, in step S1016, the first calibration unit 911 transmits the first calibration pattern image to the projector 310_28b.

In step S1017, the projector 310_28a projects a second calibration pattern image transmitted from the first calibration unit 911. Further, in step S1018, the projector 310_28b projects the first calibration pattern image transmitted from the first calibration unit 911.

In step S1019, the operator 1000 inputs an imaging instruction to the imaging device 381 in order to capture the projected second and first calibration pattern images using the imaging device 381.

In step S1020, the image pickup apparatus 381 executes an imaging process on the projected second and first calibration pattern images, and in step S1021, the imaging apparatus 381 transmits the imaging result to the information processing apparatus 370.

FIG. 13 is a diagram showing another example of the calibration pattern image projected during the first calibration process. As shown in FIG. 13, the projector 310_28a projects a second calibration pattern image, and the projector 310_28b projects a first calibration pattern image. The operator 1000 captures the second and first calibration pattern images using the image pickup apparatus 381, and transmits the imaging result to the information processing apparatus 370.

Returning to the description of FIG. 10 again. In step S1022, the operator 1000 specifies to the first calibration unit 911 a shooting result to be used for calculating the correction parameter. In step S1023, the first calibration unit 911 reads out the photographing result designated by the operator 1000.

In step S1024, the operator 1000 inputs a correction parameter calculation instruction. In step S1025, the first calibration unit 911 calculates the correction parameter based on the read imaging result.

The correction parameters calculated by the first calibration unit 911 include geometry for performing various geometric corrections such as alignment, scale adjustment, and distortion correction with respect to the first and second calibration pattern images. Contains parameters. This geometric parameter varies depending on various factors such as the installation position of the electric screen and the projection device, the individual difference of the optical device of the projection device, and the like. For this reason, the geometric parameters are often different for each window glass (combination of an electric screen and a projection device). In the image processing unit 372, which will be described later, by making corrections using appropriate geometric parameters for each window glass, a part of the projected moving images in the projected moving image group 130 as shown in FIG. 1 can be obtained. Avoid problems such as distorted display.

The first calibration unit 911 stores the calculation result of the correction parameter in the image information management unit 376. Further, the first calibration unit 911 associates the correction parameter ID (for example, "P703") and the calculated date and time (for example, "2016.5.25") with the window ID (for example, "W703") for the image. Store in information 600.

(3) Flow of Second Calibration Process Next, the details of the second calibration process will be described with reference to FIG. 15 based on the sequence diagram of FIG. FIG. 14 is a sequence diagram of the second calibration process.

As shown in FIG. 14, in step S1401, the operator 1000 inputs an activation instruction for activating the second calibration unit 912 to the information processing apparatus 370.

In step S1402, the second calibration unit 912 is activated in response to the start instruction input by the operator 1000, and the display unit 405 of the information processing apparatus 370 displays the target to be executed by the operator for the second calibration process. A selection screen for 1000 to select is displayed.

In step S1403, the operator 1000 selects the window glass on which the second calibration process is to be executed from the selection screen displayed on the display unit 405.

In response to the window glass being selected by the operator 1000, in step S1404, the second calibration unit 912 identifies the electric screen arranged at the position corresponding to the selected window glass, and the identified electric screen is used. In response, a screen OFF instruction is transmitted.

Note that the example of FIG. 14 shows a case where the window glass 1128 having the window ID = "W703" is selected and the screen OFF instruction is transmitted to the corresponding electric screen 330_28 as in the first calibration process. ..

In step S1405, the power supply of the electric screen 330_28 is turned off in response to the screen OFF instruction being transmitted from the second calibration unit 912.

In step S1406, the second calibration unit 912 transmits a lamp ON instruction to the projector 310_28a (projector ID = "PJ703A") arranged at a position corresponding to the window glass 1128 of the window ID = "W703". As a result, the lamp of the projector n'310_28a is turned on.

In step S1407, the operator 1000 inputs a projection instruction for projecting a white image onto the projector 310_28a to the information processing apparatus 370.

In step S1408, the second calibration unit 912 transmits the white image projection instruction to the projector 310_28a in response to the white image projection instruction by the operator 1000.

In step S1409, the projector 310_28a performs all-white projection in response to the white image projection instruction transmitted from the second calibration unit 912.

In step S1410, the operator 1000 inputs a measurement instruction for measuring the color temperature of the window glass projected entirely white by the projector 310_28a to the color luminance meter 382.

In step S1411, the color luminance meter 382 measures the color temperature of the all-white projected window glass 1128. In step S1412, the operator 1000 sets the measured color temperature in the information processing apparatus 370.

In step S1413, the second proofreading unit 912 performs a conversion process for converting the color temperature set by the operator 1000 into RGB levels.

In step S1414, the second calibration unit 912 transmits the RGB level calculated by performing the conversion process to the projector 310_28a.

In step S1415, the projector 310_28a sets the RGB level transmitted from the second calibration unit 912.

FIG. 15 is a diagram showing an example of a white image projected during the second calibration process. As shown in FIG. 15, when the electric screen 330_28 is OFF, the projector 310_28a projects a white image onto the window glass 1128. Further, the operator 1000 measures the color temperature of the window glass 1128 using the color luminance meter 382, and transmits the measurement result to the information processing apparatus 370. As a result, the information processing apparatus 370 calculates the RGB level, and the projector 310_28a sets the RGB level according to the measurement result.

Returning to the description of FIG. In step S1416, the operator 1000 inputs an instruction to end the second calibration process to the information processing apparatus 370. In step S1417, the second calibration unit 912 transmits a screen ON instruction to the electric screen 330_28 in response to the end instruction being input by the operator 1000.

In step S1418, the power supply of the electric screen 330_28 is turned on in response to the screen ON instruction being transmitted from the second calibration unit 912.

<8. Details of image processing>
Next, the details of the image processing (step S802) in the image projection system 300 will be described.

(1) Functional Configuration of Image Processing Unit First, the functional configuration of the image processing unit 372 of the information processing apparatus 370 that executes image processing will be described. FIG. 16 is a diagram showing a functional configuration of an image processing unit of an information processing apparatus.

As shown in FIG. 16, the image processing unit 372 includes a target information acquisition unit 1611, an image information acquisition unit 1612, an inversion unit 1613, and a decoding unit 1614. Further, the image processing unit 372 includes a first division unit 1615, a correction unit 1616, a second division unit 1617, an encoding unit 1618, and a transmission unit 1619.

The target information acquisition unit 1611 reads the signage target information from the signage target information management unit 375 and notifies the first division unit 1615.

The image information acquisition unit 1612 reads the moving image provided by the advertiser from the image information management unit 376 and notifies the inversion unit 1613.

The inversion unit 1613 inverts the left and right of the moving image notified by the image information acquisition unit 1612. This is because the image projection system 300 projects from the inside onto a transparent or translucent window glass, and the projection result is viewed from the outside of the window glass, so that it is necessary to invert the left and right in advance. In this way, by performing the reversing process by the reversing unit 1613, it is possible to avoid a situation in which the viewer views the moving image whose left and right sides are reversed from the moving image intended by the advertiser. The inversion unit 1613 notifies the decoding unit 1614 of the inverted moving image.

The decoding unit 1614 extracts a still image group by decoding the moving image whose left and right are determined and decomposing it into frame units. The decoding unit 1614 sequentially notifies the first division unit 1615 of each still image included in the still image group.

The first division unit 1615 functions as the first division means. The first division unit 1615 performs a first division process of dividing each still image sequentially notified from the decoding unit 1614 into a plurality of still images based on the signage target information 500 notified from the target information acquisition unit 1611. .. As a result, the first division unit 1615 can generate a divided still image (divided image) according to the position of the window glass and the size of the window glass.

The first division unit 1615 also functions as a storage means. The first division unit 1615 divides all the still images included in the still image group into a plurality of divided still images obtained by performing the first divided processing for each divided still image of the same window glass. An image group is generated and stored in the image information management unit 376.

Further, the first division unit 1615 assigns a division still image group ID to each of the generated plurality of division still image groups, and stores the divided still image group ID in the image information 600 in association with the window ID.

Further, the first division unit 1615 notifies the correction unit 1616 of each of the generated plurality of divided still image groups in association with the window ID.

The correction unit 1616 is an example of correction means. The correction unit 1616 corrects each of the plurality of divided still image groups notified by the first division unit 1615 by using the correction parameters according to the window ID. Further, the correction unit 1616 notifies the second division unit 1617 of the plurality of divided still image groups after the correction.

The second division unit 1617 functions as a second division means. The second division unit 1617 divides each of the plurality of corrected still image groups notified by the correction unit 1616 into projector units. Since the plurality of divided still image groups after correction generated by the correction unit 1616 are generated in units of windowpanes, the second division unit 1617 divides them into units of projectors.

The encoding unit 1618 encodes a plurality of corrected still image groups divided into projector units for each projector to generate a plurality of moving images for projection. The encoding unit 1618 stores the projected moving image ID for identifying the generated plurality of projected moving images and the generation date and time in association with the projector ID in the image information 600.

The transmission unit 1619 is an example of the transmission means, and transmits a plurality of projection moving images generated by the encoding unit 1618 to the corresponding projectors, respectively. In addition, since the transmission unit 1619 transmits the projection moving image to the corresponding projector in advance, it is sufficient for the signage control unit 373 to transmit the projection start instruction at the start of projection. This makes it possible to reduce the possibility of delay in the projection of the projection moving image as compared with the configuration in which the projection moving image is transmitted at the start of projection.

(2) Specific Example of Image Processing Next, a specific example of image processing by the image processing unit 372 will be described. FIG. 17 is a diagram showing a specific example of image processing.

In FIG. 17, the moving image 1710 is a moving image having a moving image ID = "C100" and is stored in the image information management unit 376 in MPEG4 format. When the image information acquisition unit 1612 reads the moving image 1710 and notifies the reversing unit 1613, the reversing unit 1613 reverses the left and right sides of the moving image 1710 and generates the reversed moving image 1711.

The inverted moving image 1711 is decoded by the decoding unit 1614 and extracted as a still image group composed of a plurality of still images. Further, the extracted still image group is subjected to the first division process based on the signage target information by the first division unit 1615 to generate a plurality of divided still image groups.

The plurality of divided still image groups (divided still image groups 1720_1, 1720_2, ... 1720_30) are each assigned a divided still image group ID (C201, C202, ... C705) and correspond to the window ID. It is attached and stored in the image information 600.

Further, the correction unit 1616 corrects the plurality of divided still image groups 1720_1, 1720_2, ... 1720_30 by using the corresponding correction parameters, respectively. For example, the correction unit 1616 corrects the divided still image group 1720_1 by using the correction parameter 1730_1 (correction parameter ID = "P201"). Further, the correction unit 1616 corrects the divided still image group 1720_2 by using the correction parameter 1730_2 (correction parameter ID = "P202"). Further, the correction unit 1616 corrects the divided still image group 1720_30 by using the correction parameter 1730_30 (correction parameter ID = "P705").

The corrected divided still image groups 1720_1, 1720_2, ... 1720_30 corrected by the correction parameters are each divided into projector units by the second division unit 1617. For example, by dividing the corrected divided still image group 1720_1 into projector units, a divided still image group 1740_1a for the projector 310_1a and a divided still image group 1740_1b for the projector 310_1b are generated.

Similarly, by dividing the corrected divided still image group 1720_30 into projector units, the divided still image group 1740_30a for the projector 310_30a and the divided still image group 1740_30b for the projector 310_30b are generated.

The corrected divided still image groups 1740_1a to 1740_30b divided into projector units by the second dividing unit 1617 are encoded by the encoding unit 1618. As a result, the encoding unit 1618 generates an MPEG4 format projection moving image.

For example, the encoding unit 1618 generates a moving image for projection 1750_1a by encoding the divided still image group 1740_1a for the projector 310_1a. Further, the encoding unit 1618 generates a moving image for projection 1750_1b by encoding the divided still image group 1740_1b for the projector 310_1b. Further, the encoding unit 1618 encodes the divided still image group 1740_30a for the projector 310_30a and the divided still image group 1740_30b for the projector 310_30b to generate the projection moving images 1750_30a and 1750_30b.

The encoding unit 1618 associates the projected moving image IDs (M201A, M201B, ... M705A, M705B) for identifying the generated plurality of projected moving images 1750_1a to 1750_30b, and the generation date and time with the projector ID. It is stored in the information 600.

Further, the transmission unit 1619 transmits a plurality of generated moving images for projection 1750_1a to 1750_30b to the corresponding projectors. For example, the transmission unit 1619 transmits the projection moving image 1750_1a to the projector 310_1a. Further, the moving image for projection 1750_1b is transmitted to the projector 310_1b. Further, the transmission unit 1619 transmits the projection moving image 1750_30a to the projector 310_30a and the projection moving image 1750_30b to the projector 310_30b, respectively.

(3) Flow of image processing Next, the flow of image processing will be described with reference to the flowchart of FIG. FIG. 18 is a flowchart showing the flow of image processing.

In step S1801, the image information acquisition unit 1612 acquires a moving image from the image information management unit 376.

In step S1802, the target information acquisition unit 1611 acquires the signage target information 500 from the signage target information management unit 375.

In step S1803, the reversing unit 1613 performs a left-right reversing process on the moving image acquired in step S1801.

In step S1804, the decoding unit 1614 extracts a still image group by decoding the inverted moving image.

In step S1805, the first division unit 1615 substitutes 1 for the still image counter n.

In step S1806, the first division unit 1615 performs the first division processing on the nth still image. The details of the flowchart of the first division process will be described later.

In step S1807, the first division unit 1615 determines whether or not the first division processing has been performed on all the still images. If it is determined in step S1807 that there is a still image that has not been subjected to the first division process (if No in step S1807), the process proceeds to step S1808. In step S1808, the first division unit 1615 increments the still image counter n and then returns to step S1806.

On the other hand, if it is determined in step S1807 that the first division processing has been performed on all the still images, the process proceeds to step S1809.

In step S1809, the first division unit 1615 generates a group of divided still images for the number of windowpanes by dividing the plurality of divided still images generated for each still image into each divided still image corresponding to the same window glass. Then, it is stored in the image information management unit 376. Further, the first division unit 1615 assigns a division still image group ID to each of the generated divided still image groups, and stores the divided still image group ID in the image information 600 in association with the window ID.

In step S1810, the correction unit 1616 substitutes 1 for the divided still image group counter m.

In step S1811, the correction unit 1616 corrects the m-th divided still image group among the divided still image groups generated in step S1809 by using the corresponding correction parameters.

In step S1812, the second division unit 1617 performs the second division processing on the m-th divided still image group after the correction.

In step S1813, the second division unit 1617 determines whether or not the correction processing and the second division processing have been performed on all the divided still image groups generated in step S1809.

If it is determined in step S1813 that there is a divided still image group that has not undergone the correction process and the second division process (if No in step S1813), the process proceeds to step S1813.

In step S1814, the correction unit 1616 increments the divided still image group counter m and returns to step S1811.

On the other hand, if it is determined in step S1813 that the correction processing and the second division processing have been performed on all the divided still image groups (in the case of Yes in step S1813), the process proceeds to step S1815.

In step S1815, the encoding unit 1618 generates a plurality of projection moving images by encoding the divided still image group subjected to the second division processing for each projector. In addition, the encoding unit 1618 stores the generation date and time in the image information 600 for the generated plurality of projection moving images.

In step S1816, the transmission unit 1619 transmits the generated plurality of projection moving images to the corresponding projectors, respectively.

(4) Details of First Division Processing Next, details of the first division processing (step S1806) will be described with reference to FIGS. 19 and 20. FIG. 19 is a flowchart showing the flow of the first division process. Further, FIG. 20 is a diagram showing an example of the first division process.

In step S1901, the first division unit 1615 reads out the nth still image. In FIG. 20, it is assumed that the still image 2000 is the nth still image read by the first division unit 1615.

In step S1902, the first division unit 1615 substitutes "2" for the floor counter f.

In step S1903, the first division unit 1615 substitutes "1" for the window counter g that counts the number of windowpanes per floor.

In step S1904, the first division unit 1615 reads out the "position", "horizontal size", and "vertical size" of the window ID = "Wf0g" from the signage target information 500. Here, "2" is substituted into f, for "1" is substituted into g, the position of the window ID = "W201" ((0,0 )), the horizontal size _{(x 12),} the vertical size ( y ₁₂ ) is read out.

In step S1905, the first division unit 1615 converts the position, horizontal size, and vertical size read in step S1904 into the number of pixels according to the comparison between the still image 2000 and the predetermined area 510.

As shown in FIG. 20, in the present embodiment, the still image 2000 is composed of 4000 pixels in the horizontal direction and 8000 pixels in the vertical direction. In this case, the pixels on the still image 2000 corresponding to the position = "(0,0)" are the pixels of the position = "(0,0)".

Further, the pixels on the still image 2000 corresponding to the horizontal size (x _{12 ) are the pixels calculated by (x 12} / x ₅₂ ) × 4000. Further, the pixels on the still image 2000 corresponding to the vertical size (y _{12 ) are the pixels calculated by (y 12} / y ₆₂ ) × 8000.

In step S1906, the first division unit 1615 cuts out the rectangular region 2001 specified based on the pixels calculated in step S1905 from the still image 2000, and generates the divided still image.

In step S1907, the first division unit 1615 determines whether or not the first division processing has been performed on all the windowpanes on the f floor. If it is determined in step S1907 that there is a window glass that has not been subjected to the first division process (if No in step S1907), the process proceeds to step S1908.

In step S1908, the first division unit 1615 increments the window counter g and then returns to step S1904. As a result, "2" is substituted for g.

In step S1904, from the signage target information 500, the first division unit 1615 has a window ID = "W202" position ((x ₂₁ , 0)), a horizontal size (x ₂₂ −x ₂₁ ), and a vertical size (y ₁₂ ). Is read.

In step S1905, the first division unit 1615 converts the position, horizontal size, and vertical size read in step S1904 into the number of pixels.

As shown in FIG. 20, the pixels on the still image 2000 corresponding to _{the position ((x 21 , 0)) are the pixels calculated by (x 21} / x ₅₂ ) × 4000. Further, the pixels on the still image 2000 corresponding to the horizontal size (x ₂₂ −x _{21 ) are the pixels calculated by (x 22} / x ₅₂ ) × 4000. Further, the pixels on the still image 2000 corresponding to the vertical size (y _{12 ) are the pixels calculated by (y 12} / y ₆₂ ) × 8000.

In step S1906, the first division unit 1615 cuts out the rectangular region 2002 specified based on the pixels calculated in step S1905 from the still image 2000, and generates the divided still image.

In step S1907, the first division unit 1615 determines whether or not the first division processing has been performed on all the windowpanes on the f floor. If it is determined in step S1907 that there is a window glass that has not been subjected to the first division process (if No in step S1907), the process proceeds to step S1908. After that, in step S1906, the processes of steps S1904 to S1906 are repeated until the rectangular region 2005 is cut out.

If it is determined in step S1907 that the first division process has been performed on all the windowpanes on the f floor (in the case of Yes in step S1907), the process proceeds to step S1909.

In step S1909, the first division unit 1615 determines whether or not the first division processing has been performed on all the floors. If it is determined in step S1909 that there is a floor on which the first division process has not been performed (if No in step S1909), the process proceeds to step S1910.

In step S1910, the first division unit 1615 increments the floor counter f and then returns to step S1903. After that, in the floor counter f = 7, the processes of steps S1904 to S1907 are repeated until the rectangular region 2030 is cut out.

If it is determined in step S1909 that the first division process has been performed for all the floors (in the case of Yes in step S1909), the process returns to step S1807 of FIG.

<9. Details of signage control processing>
Next, the details of the signage control process (step S803) by the image projection system 300 will be described.

(1) Functional Configuration of Signage Control Unit First, the functional configuration of the signage control unit 373 of the information processing apparatus 370 that executes the signage control processing will be described. FIG. 21 is a diagram showing a functional configuration of a signage control unit of an information processing device.

As shown in FIG. 21, the signage control unit 373 includes a synchronization unit 2101, a start control unit 2102, and an end control unit 2103.

The synchronization unit 2101 outputs time information. Further, the synchronization unit 2101 synchronizes the time between the projectors 310_1a to 310_30b and the information processing device 370. Specifically, the time information is received from the time server 360, the time information to be output is corrected, and then the corrected time information is transmitted to the projectors 310_1a to 310_30b. When the projectors 310_1a to 310_30b receive the time information from the synchronization unit 2101, the projectors 310_1a to 310_30b correct the time information managed internally and output the time information. As a result, the synchronization unit 2101 can synchronize the time between the projectors 310_1a to 310_30b and the information processing device 370 based on accurate time information.

The start control unit 2102 reads the schedule information stored in the schedule information management unit 377 and identifies the projection start time. Further, the start control unit 2102 calculates the instruction timing for each signage device based on the information about the required time of each signage device, and transmits the instruction at the start of projection to each signage device at the calculated instruction timing. As a result, the signage control unit 373 can perform control in consideration of the required time of each signage device at the start of projection.

The end control unit 2103 reads the schedule information stored in the schedule information management unit 377 and identifies the projection end time. Further, the end control unit 2103 calculates the instruction timing for each signage device based on the information regarding the required time of each signage device, and transmits the instruction at the end of projection to each signage device at the calculated timing. As a result, the signage control unit 373 can perform control in consideration of the required time of each signage device at the end of projection.

(2) Flow of Signage Control Process (Startup) Next, the signage control process (startup) by the signage control unit 373 will be described with reference to the flowchart of FIG. FIG. 22 is a flowchart showing the flow of the signage control process (startup).

In step S2201, the synchronization unit 2101 receives the time information from the time server 360, corrects the time information managed inside the information processing apparatus 370, and transmits the corrected time information to the projectors 310_1a to 310_30b.

In step S2202, the start control unit 2102 reads the schedule information stored in the schedule information management unit 377 and identifies the projection start time.

In step S2203, the start control unit 2102 reads out the required time information (details will be described later) stored in the schedule information management unit 377. It is assumed that the required time information is stored in the schedule information management unit 377 in association with the schedule information 700.

In step S2204, the start control unit 2102 calculates the instruction timing at the start of projection for each signage device based on the projection start time identified in step S2202 and the required time information read in step S2203.

FIG. 23 is a diagram showing an example of required time information and instruction timing for each signage device. As shown in FIG. 23A, the required time information 2300 includes "instruction items for the signage device", "required time", and "control pattern" as information items.

In the "instruction item for the signage device", the instruction item to be given to each signage device at the start of projection is stored. The "required time" stores the time required for each signage device to operate at the start of projection. The "control pattern" stores information about the operation order of each signage device at the start of projection.

According to the example of FIG. 23A, it takes 90 seconds from the transmission of the lamp ON instruction to the projector until the lamp ON state of the projector stabilizes. Further, according to the example of FIG. 23A, the lamp ON instruction is collectively transmitted to the projectors on all floors at the start of projection.

Further, according to the example of FIG. 23A, after transmitting the projection start instruction to all the projectors arranged on each floor, the projection of the moving image for projection is started in all the projectors. It takes 10 seconds. Further, according to the example of FIG. 23A, at the start of projection, the projection start instruction is collectively transmitted to the projectors on all floors.

Further, according to the example of FIG. 23A, when the illumination devices are sequentially turned off from the lower floors, it takes 10 seconds to turn off the illumination devices on all floors.

Further, according to the example of FIG. 23A, when the electric screens are sequentially turned on from the lower floors, it takes 10 seconds to turn on the electric screens of all the floors.

Therefore, as shown in the graph 2310 of FIG. 23B, the start control unit 2102 transmits a lamp ON instruction to the projectors 310_1a to 310_30b 90 seconds before the projection start time.

Further, as shown in the graph 2320 of FIG. 23B, the start control unit 2102 transmits a projection start instruction of the projection moving image to the projectors 310_1a to 310_30b 10 seconds before the illumination OFF instruction is given. To do.

Further, as shown in the graph 2330 of FIG. 23B, the start control unit 2102 attaches the start control unit 2102 to the illumination device on the lower floor 20 seconds before the projection start time (10 seconds before the screen ON instruction). Send an illumination OFF instruction.

Further, as shown in the graph 2340 of FIG. 23B, the start control unit 2102 transmits a screen ON instruction to the electric screen on the lower floor 10 seconds before the projection start time.

Returning to the description of FIG. In step S2205, the start control unit 2102 determines whether or not the time of the instruction timing at the start of projection for each signage device calculated in step S2204 has been reached.

If it is determined in step S2205 that the time of the instruction timing has not been reached (in the case of No in step S2205), the process waits until it is determined that the time of the instruction timing has been reached.

On the other hand, if it is determined in step S2205 that the time of the instruction timing has been reached (in the case of Yes in step S2205), the process proceeds to step S2206.

In step S2206, the start control unit 2102 transmits an instruction to the signage device that has reached the time of the instruction timing.

In step S2207, the start control unit 2102 determines whether or not an instruction has been transmitted to all signage devices. If it is determined in step S2207 that there is a signage device that has not transmitted an instruction (if No in step S2207), the process returns to step S2205.

On the other hand, if it is determined in step S2207 that the instruction has been transmitted to all the signage devices (in the case of Yes in step S2207), the signage control process (startup) is terminated.

(3) Flow of Signage Control Process (End) Next, the signage control process (end) will be described with reference to the flowchart of FIG. 24. FIG. 24 is a flowchart showing the flow of the signage control process (end).

In step S2401, the end control unit 2103 reads the schedule information stored in the schedule information management unit 377 and identifies the projection end time.

In step S2401, the end control unit 2103 reads out the required time information (details will be described later) stored in the schedule information management unit 377. It is assumed that the required time information is stored in the schedule information management unit 377 in association with the schedule information 700.

In step S2403, the end control unit 2103 calculates the instruction timing at the end of projection for each signage device based on the projection end time identified in step S2401 and the required time information read in step S2402.

FIG. 25 is a diagram showing an example of required time information and instruction timing for each signage device. As shown in FIG. 25 (a), the items of information included in the required time information 2500 are the same as those in FIG. 23 (a), and thus the description thereof will be omitted here.

According to the example of FIG. 25A, when the electric screens are sequentially turned off from the lower floors, it takes 10 seconds to turn off the electric screens of all the floors.

Further, according to the example of FIG. 25A, when the illumination devices are sequentially turned on from the lower floors, it takes 10 seconds to turn on the illumination devices on all floors.

Further, according to the example of FIG. 25A, when the projection of the moving image for projection is sequentially finished from the lower floor, it takes 10 seconds to finish the projection of the moving image for projection on all the floors.

Further, according to the example of FIG. 25A, when the lamps of the projectors are sequentially turned off from the lower floors, it takes 10 seconds to turn off the lamps of the projectors on all the floors.

Therefore, as shown in the graph 2510 of FIG. 25 (b), the end control unit 2103 refers to the electric screen on the lower floor 20 seconds before the projection end time (10 seconds before the illumination ON instruction). , Send a screen off instruction.

Further, as shown in the graph 2520 of FIG. 25B, the end control unit 2103 transmits an illumination ON instruction to the illumination device on the lower floor 10 seconds before the projection end time.

Further, as shown in the graph 2530 of FIG. 25B, the end control unit 2103 transmits a projection end instruction to the projector on the lower floor at the same timing as the screen OFF instruction.

Further, as shown in the graph 2540 of FIG. 25B, the end control unit 2103 transmits a lamp OFF instruction to the projector on the lower floor at the same timing as the screen OFF instruction.

Returning to the description of FIG. 24. In step S2404, the end control unit 2103 determines whether or not the time of the instruction timing at the end of projection for each signage device calculated in step S2403 has been reached.

If it is determined in step S2404 that the time of the instruction timing has not been reached (if No in step S2404), the process waits until it is determined that the time of the instruction timing has been reached.

On the other hand, if it is determined in step S2404 that the time of the instruction timing has been reached (yes in step S2404), the process proceeds to step S2405.

In step S2405, the end control unit 2103 transmits an instruction to the signage device that has reached the time of the instruction timing.

In step S2406, the end control unit 2103 determines whether or not the instruction has been transmitted to all the signage devices. If it is determined in step S2406 that there is a signage device that has not transmitted an instruction (if No in step S2406), the process returns to step S2404.

On the other hand, if it is determined in step S2406 that the instruction has been transmitted to all the signage devices (yes in step S2406), the signage control process (end) is terminated.

<10. Details of monitoring process>
Next, the details of the monitoring process in the image projection system 300 will be described. As described above, in the image projection system 300, the monitoring process is executed in parallel while the signage process shown in FIG. 8 is being executed.

(1) Functional configuration of the monitoring unit First, the functional configuration of the monitoring unit 374 of the information processing device 370 that executes the monitoring process will be described. FIG. 26 is a diagram showing a functional configuration of a monitoring unit of an information processing device.

As shown in FIG. 26, the monitoring unit 374 has an information monitoring unit 2601 and a regeneration unit 2602.

The information monitoring unit 2601 monitors the image information 600, and the "calculated date and time" which is the date and time when the correction parameter is calculated and the "generation date and time" of the moving image for projection generated by the correction using the correction parameter. Judge the context with. If it is determined that the date and time stored in the "calculated date and time" is later than the date and time stored in the "generation date and time", the information monitoring unit 2601 sets the corresponding window ID to the regeneration unit 2602. Notice.

The regeneration unit 2602 is an example of the regeneration means. Upon receiving the notification of the window ID from the information monitoring unit 2601, the regeneration unit 2602 corrects the divided still image group associated with the window ID with a new correction parameter, and regenerates the moving image for projection. .. In addition, the regeneration unit 2602 stores the regenerated moving image for projection in the image information management unit 376, and updates the "generation date and time" of the image information 600.

(2) Flow of monitoring process Next, the monitoring process will be described with reference to the flowchart of FIG. 27. FIG. 27 is a flowchart showing the flow of the monitoring process.

In step S2701, the information monitoring unit 2601 monitors the image information 600 stored in the image information management unit 376, and determines whether or not the "calculated date and time" has been updated. If it is determined in step S2701 that it has not been updated (in the case of No in step S2701), it waits until it is determined that it has been updated.

On the other hand, if it is determined in step S2701 that the update has been performed (in the case of Yes in step S2701), the process proceeds to step S2702. Here, it is assumed that the correction parameter of the correction parameter ID = "P205" has been updated.

In step S2702, the information monitoring unit 2601 notifies the regeneration unit 2602 of the window ID associated with the correction parameter determined that the "calculated date and time" has been updated in step S2701. The regeneration unit 2602 reads out the divided still image group (here, the divided still image group ID = "C205") associated with the notified window ID from the image information management unit 376.

In step S2703, the regenerating unit 2602 uses a correction parameter in which the "calculation date and time" is updated for the divided still image group (here, the divided still image group ID = "C205") read in step S2702. Perform correction processing. Here, the correction process is performed using the correction parameter with the correction parameter ID = "P205".

In step S2704, the regeneration unit 2602 substitutes "1" for the divided still image counter p.

In step S2705, the regeneration unit 2602 performs the second division processing on the p-th divided still image included in the divided still image group (divided still image group ID = "C205") recorrected in step S2703.

In step S2706, the regeneration unit 2602 determines whether or not the second division processing has been performed on all the divided still images included in the recorrected divided still image group (divided still image group ID = "C205"). .. If it is determined in step S2706 that there is a divided still image that has not been subjected to the second division processing (if No in step S2706), the process proceeds to step S2707.

In step S2707, the regeneration unit 2602 increments the divided still image counter p, and then returns to step S2705.

On the other hand, if it is determined in step S2706 that the second division processing has been performed on all the divided still images (in the case of Yes in step S2706), the process proceeds to step S2708.

In step S2708, the regeneration unit 2602 encodes the divided still image group subjected to the second division processing in units of projectors to produce a moving image for projection (projection moving image ID = "M205A", "M205B"). Is regenerated.

In step S2709, the regenerating unit 2602 transfers the regenerated moving image for projection (projecting moving image ID = "M205A", "M205B") to the corresponding projector (projector ID = "PJ205A", "PJ205B"). Send each.

In step S2710, the regeneration unit 2602 updates the "generation date and time" of the regenerated projection moving image (projection moving image ID = "M205A", "M205B") in the image information 600.

As a result, according to the monitoring unit 374, even if the correction parameter is changed after the projection moving image is generated, the projection moving image reflecting the changed correction parameter can be regenerated. become. As a result, it is possible to project a motion image for projection without distortion even on the electric screen corresponding to the window glass in which the correction parameter is changed.

<11. Summary>
As is clear from the above description, in the image projection system 300 according to the present embodiment,
-The moving image provided by the advertiser is inverted, and the still image of each frame of the inverted moving image is divided based on the positions and sizes of a plurality of windowpanes included in a predetermined area on the outer surface of the building. Then, a plurality of divided still images are generated from each still image.
-Using the divided still images of each frame corresponding to the same window glass, a group of divided still images for the number of window glasses is generated and stored in the image information management unit.
-The divided still image group is corrected by using each correction parameter generated by performing the calibration process on the projectors arranged at the positions corresponding to the plurality of windowpanes included in the predetermined area on the outer surface of the building.
-Each of the corrected divided still image groups is further divided according to the number of projectors arranged at positions corresponding to one window glass, and then encoded to generate a moving image group for projection in units of projectors. To do.
-Each projection moving image of the generated projection moving image group is projected on each of the electric screens corresponding to a plurality of windowpanes via the corresponding projectors.

This makes it possible to realize digital signage that combines a plurality of light transmitting surfaces.

Further, in the image projection system 300 according to the present embodiment,
-Each of the generated moving image groups for projection is transmitted to the corresponding projector, and projected on each of the plurality of electric screens corresponding to the plurality of windowpanes at the timing calculated based on the schedule information in which the projection time is set. ..
-Control the operation of the electric screen and the illumination device at the timing calculated based on the schedule information.

As a result, it is possible to reduce the possibility that the projection of the moving image for projection is delayed as compared with the configuration in which the moving image for projection is transmitted at the start of projection, and it is possible to realize digital signage with a high visual effect. It will be possible.

[Second Embodiment]
In the first embodiment, the projectors 310_1a to 310_30b are individually controlled when performing the signage control process. However, the control method of the projector in the signage control process is not limited to this, and the projectors 310_1a to 310_30b may be configured to be controlled in units of floors.

For example, in the signage control process, the lamp ON instruction and the projection start instruction may be configured to be commonly transmitted to the projectors 310_1a to 310_5b (projectors arranged on the 2nd floor).

Alternatively, the projectors 310_1a to 310_30b may be configured to be collectively controlled. For example, in the signage control process, the lamp ON instruction and the projection start instruction may be configured to be commonly transmitted to the projectors 310_1a to 310_30b (all projectors arranged on the 2F to 7F).

Similarly, in the first embodiment, when performing the signage control process, each of the electric screens 330_1 to 330_30 is individually controlled. However, the method of controlling the electric screen in the signage control process is not limited to this, and the electric screens 330_1 to 330_30 may be configured to be controlled on a floor-by-floor basis. For example, by configuring the control device 340 to control the electric screens 330_1 to 330_5 (electric screens arranged on the 2nd floor) via a common power tap, it is possible to control the electric screens on a floor-by-floor basis.

Alternatively, the electric screens 330_1 to 330_30 may be configured to be collectively controlled. For example, the control device 340 controls the electric screens 330_1 to 330_30 (all electric screens arranged on the 2nd to 7th floors) via a common power strip, thereby performing common control on all floors. Will be possible.

In this way, the window glass group attached to the predetermined area on the outer surface of the building 110 is classified into a plurality of groups (for example, a group for each floor), and each signage device corresponding to the window glass belonging to each group is provided. It may be configured to control all at once.

[Third Embodiment]
In the first embodiment, in the second calibration process, the projector setting is changed based on the RGB level converted according to the measured color temperature. However, the color temperature may be measured for each time zone, weather, and brightness in the building, and the projector setting may be changed based on the RGB level according to each measurement result.

[Other Embodiments]
In the first embodiment, the case where two projectors are arranged on one window glass has been described, but the number of projectors arranged on one window glass is not limited to two. For example, the number of projectors arranged on one window glass may be one. In this case, the second division process is not executed. Further, the number of projectors arranged on one window glass may be three or more. In this case, in the second division process, the divided still image group generated by the first division process is divided into a number (predetermined number) according to the number of projectors arranged on one window glass.

The number of projectors arranged on one window glass may be different for each window glass. In this case, in the second division process, the number of divisions is changed for each window glass.

Further, in the first embodiment, the case where the shape of each window glass is rectangular and flat has been described, but the shape of each window glass does not have to be rectangular. Further, the shape of each window glass may be a curved surface. In this case, the calibration unit 371 calculates the correction parameter based on the curved surface shape of each window glass, and the image processing unit 372 corrects the divided still image group using the calculated correction parameter.

Further, in the first embodiment, the case where the size of each window glass is the same has been described, but the size of each window glass does not have to be the same. When the size of the window glass is different, the projection range of the projector is adjusted according to the size of each window glass, and the first division process is performed according to the size of each window glass.

Further, in the first embodiment, the case where the moving image for projection is generated based on the moving image has been described, but the still image for projection may be generated based on the still image.

Further, in the first embodiment, the information processing apparatus 370 has been described as having a calibration unit 371, an image processing unit 372, a signage control unit 373, and a monitoring unit 374, but some of these functions are other. It may be realized in the signage device of.

Further, in the first embodiment, the window glass attached to a predetermined area on the outer surface of the building 110 has been described as a projection target, but the projection target is not limited to the window glass but is another light transmitting surface. May be good. Further, the light transmitting surface is not limited to the one attached to the predetermined area on the outer surface of the building 110, and may be the light transmitting surface attached to the predetermined area inside the building 110, or an object other than the building. It may be a light transmitting surface attached to.

The present invention is not limited to the configurations shown here, such as combinations with other elements in the configurations and the like described in the above embodiments. These points can be changed without departing from the spirit of the present invention, and can be appropriately determined according to the application form thereof.

110: Building 120: Window glass group 130: Moving image group for projection 310_1a to 310_30b: Projector 320_1a to 320_30b: External memory 330_1 to 330_30: Electric screen 340: Control device 360: Time server 370: Information processing device 371: Calibration unit 372 : Image processing unit 373: Signage control unit 374: Monitoring unit 375: Signage target information management unit 376: Image information management unit 377: Schedule information management unit 381: Imaging device 382: Color brightness meter 500: Signage target information 510: Predetermined area 520: Origin 530: x-axis 540: y-axis 600: Image information 700: Schedule information 911: First calibration unit 912: Second calibration unit 1611: Target information acquisition unit 1612: Image information acquisition unit 1613: Inversion unit 1614: Decoding Unit 1615: First division unit 1616: Correction unit 1617: Second division unit 1618: Encoding unit 1619: Transmission unit 1720_1 to 1720_30: Division still image group 1730_1 to 1730_30: Correction parameters 1740_1a to 1740_30b: Still image group 1750_1a to 1750_30b: Moving image for projection 2101: Synchronization unit 2102: Start control unit 2103: End control unit 2601: Information monitoring unit 2602: Regeneration unit

JP-A-2015-26992 Japanese Unexamined Patent Publication No. 2016-85435

Claims (14)

A dividing means for dividing one image into a plurality of divided images based on the positions and sizes of a plurality of surfaces included in a predetermined area, and
A correction means for correcting the divided image and
A calculation means for calculating correction parameters for correcting the divided image for each of the plurality of surfaces, and
A determination means for determining the context of the date and time when the divided image was corrected by the correction means and the date and time when the correction parameter was calculated by the calculation means.
When the determination means determines that the correction parameter has been calculated by the calculation means after the divided image has been corrected by the correction means, the divided image is used with the correction parameter calculated by the calculation means. By re-correcting the image, the plurality of divided images are transferred to each of the projection surfaces corresponding to the plurality of surfaces via the regenerating means for regenerating the divided image and the projection device corresponding to each of the plurality of surfaces. An image projection system characterized by having a control means for controlling the projection. The dividing means
A first dividing means for dividing one image into a plurality of first divided images based on the positions and sizes of the plurality of surfaces included in the predetermined region.
By further dividing the plurality of first divided images divided by the first dividing means based on the number of projection devices corresponding to the surfaces to which each is projected, the surface is further divided. A second dividing means for generating a predetermined number of second divided images according to the number of projection devices.
The control means
Controlling the projection device corresponding to the first surface to project the predetermined number of second divided images via the projection device corresponding to each of the predetermined number of second divided images. The image projection system according to claim 1. The second dividing means is
The plurality of first divided images divided by the first dividing means, and the plurality of first divided images corrected by the correction means are projected onto the surface. The image projection system according to claim 2, wherein a predetermined number of second divided images are generated by dividing the image based on the number of projection devices. The control means
The image projection system according to claim 2 or 3, wherein the projection device is controlled in units of floors on which the projection device corresponding to each of the predetermined number of second divided images is installed. The image projection system according to any one of claims 1 to 4, wherein the image 1 is an image whose left and right sides are inverted. The dividing means divides each of the images of each frame extracted by decoding the moving image into the plurality of divided images.
The control means
A plurality of moving images generated by decoding the plurality of divided images divided from the images of the respective frames for each of the plurality of surfaces are projected onto each of the projection surfaces corresponding to the plurality of surfaces. The image projection system according to claim 1, wherein the image projection system is controlled so as to perform the image projection system. Further having a transmitting means for transmitting the predetermined number of second divided images to the projection device corresponding to the first surface and to the projection device corresponding to each of the predetermined number of second divided images. ,
The control means
By transmitting an instruction to the projection device corresponding to the first surface at a predetermined timing, it is controlled to project the predetermined number of second divided images onto the projection surface corresponding to the first surface. The image projection system according to claim 2, wherein the image projection system is made. The control means
The image projection system according to claim 7, wherein the instruction is transmitted to the projection device corresponding to the plane 1 at a timing calculated based on the schedule information in which the projection time is determined. Each of the projection planes corresponding to the plurality of planes includes a screen that operates to change the light transmittance.
The control means further
The image projection system according to claim 1, wherein the operation of each of the plurality of screens is controlled at a predetermined timing. The control means further
The image projection system according to claim 9, wherein the operation of the illumination device corresponding to any one of the plurality of surfaces is controlled at a predetermined timing. Each of the plurality of surfaces is arranged at a predetermined amount of space from each other in the predetermined region, and the dividing means corresponds to each of the plurality of surfaces according to the comparison between the image of 1 and the predetermined region. The image projection system according to claim 1, wherein the divided image is cut out from the image of 1. A dividing means for dividing one image into a plurality of divided images based on the positions and sizes of a plurality of surfaces included in a predetermined area, and
A correction means for correcting the divided image and
A calculation means for calculating correction parameters for correcting the divided image for each of the plurality of surfaces, and
A determination means for determining the context of the date and time when the divided image was corrected by the correction means and the date and time when the correction parameter was calculated by the calculation means.
When the determination means determines that the correction parameter has been calculated by the calculation means after the divided image has been corrected by the correction means, the divided image is used with the correction parameter calculated by the calculation means. By re-correcting the image, the plurality of divided images are transferred to each of the projection surfaces corresponding to the plurality of surfaces via the regenerating means for regenerating the divided image and the projection device corresponding to each of the plurality of surfaces. An information processing device having a control means for controlling projection. A division step of dividing one image into a plurality of divided images based on the positions and sizes of a plurality of surfaces included in a predetermined area, and
A correction step for correcting the divided image and
A calculation step of calculating correction parameters for correcting the divided image for each of the plurality of surfaces, and
And date and time the divided images corrected by the correction step, a determination step of determining the context of the time in which the correction parameter calculated by said calculation step,
When it is determined in the determination step that the correction parameter has been calculated by the calculation step after the divided image has been corrected by the correction step , the divided image is used with the correction parameter calculated by the calculation step. By re-correcting the image, the plurality of divided images are transferred to each of the projection surfaces corresponding to the plurality of surfaces via a regeneration step of regenerating the divided image and a projection device corresponding to each of the plurality of surfaces. An image projection method comprising a control process for controlling projection. A division step of dividing one image into a plurality of divided images based on the positions and sizes of a plurality of surfaces included in a predetermined area, and
A correction step for correcting the divided image and
A calculation step of calculating correction parameters for correcting the divided image for each of the plurality of surfaces, and
And date and time the divided images corrected by the correction step, a determination step of determining the context of the time in which the correction parameter calculated by said calculation step,
When it is determined in the determination step that the correction parameter has been calculated by the calculation step after the divided image has been corrected by the correction step , the divided image is used with the correction parameter calculated by the calculation step. By re-correcting the image, the plurality of divided images are transferred to each of the projection surfaces corresponding to the plurality of surfaces via a regeneration step of regenerating the divided images and a projection device corresponding to each of the plurality of surfaces. A program that allows a computer to perform a control process that controls projection.