WO2006100884A1 - Video display device, video display method, video display program, and computer-readable recording medium having the program recorded thereon - Google Patents

Abstract

A video display device has an imaging section (101) for imaging the surroundings of a vehicle; an acquisition section (102) for acquiring information on the behavior of the vehicle; and a display control section (104) for controlling a display screen (103) to display, based on the information on the behavior acquired by the acquisition section (102), at least a part of video out of the video of the surroundings of the vehicle taken by the imaging section (101). The video display device acquires, for example as the information on the vehicle behavior, information on the speed of the vehicle and displays a part of the taken video on the display screen (103).

Description

 Specification

 VIDEO DISPLAY DEVICE, VIDEO DISPLAY METHOD, VIDEO DISPLAY PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM CONTAINING THE PROGRAM

 Technical field

 The present invention relates to a video display device that displays a video around a vehicle, a video display method, a video display program, and a computer-readable recording medium that records the program. However, the present invention is not limited to the above-described video display device, video display method, video display program, and computer-readable recording medium on which the program is recorded.

 Background art

 [0002] In recent years, not only images of reflectors such as rearview mirrors and side mirrors mounted on vehicles such as automobiles, but also images of the surroundings of the vehicle are captured and displayed on the display screen, and the driver's rear view, etc. There is provided a vehicle rear imaging device that complements the above.

 [0003] Such a vehicle rear imaging device is provided with, for example, an obstacle sensor for detecting backward measurement at the rear end of the vehicle, and a side distance sensor for detecting an obstacle at a far rear, thereby providing a video power camera. Is displayed on the display. The camera is normally wide-angled by the judgment / view control circuit, including when an obstacle is detected by the obstacle sensor, while there is another vehicle only in the detection range of the distance sensor. When it is in a predetermined relationship that it is desired to obtain a sense of distance, the angle is narrow and the rear can be confirmed on the display with the same sense of distance as when using a side mirror (for example, Patent Document 1). reference.).

 Patent Document 1: Japanese Patent Laid-Open No. 6-32175

 Disclosure of the invention

 Problems to be solved by the invention

[0005] However, in the above-described conventional vehicle rear imaging device, the video camera image displayed on the display is wide-angled only when an obstacle or another vehicle is detected by the obstacle sensor and the distance sensor. Display or display at a narrow angle. For this reason, when a fault occurs in an obstacle sensor or a lateral distance sensor, the wide-angle / narrow-angle display of the image is switched off. An example is the problem that the replacement cannot be performed well and there is a risk of hindering the confirmation of the rear.

 Means for solving the problem

 [0006] The video display device according to the invention of claim 1 is an image pickup means for picking up an image around a vehicle, an acquisition means for acquiring information relating to the behavior of the vehicle, a display means having a display screen, and the display screen. Display control means for displaying at least a part of the video around the vehicle imaged by the imaging means based on the information regarding the behavior acquired by the acquisition means. It is characterized by providing.

 [0007] Further, the video display method according to the invention of claim 4 is acquired by an input step of receiving an input of a video around a vehicle, an acquisition step of acquiring information on the behavior of the vehicle, and the acquisition step. And a display step of displaying at least a part of the video input by the input step on a display screen based on the information related to the behavior.

 [0008] A video display program according to the invention of claim 7 causes a computer to execute the video display method according to any one of claims 4 to 6.

 [0009] Further, a computer-readable recording medium according to the invention of claim 8 records the video display program according to claim 7.

 Brief Description of Drawings

 FIG. 1 is a block diagram illustrating an example of a functional configuration of a video display device according to an embodiment.

 FIG. 2 is a flowchart illustrating an example of a video display processing procedure of the video display device according to the embodiment.

 FIG. 3 is an explanatory diagram showing an example of the inside of a vehicle in which the video display device according to the first embodiment is mounted.

 FIG. 4 is a block diagram of an example of a hardware configuration of the video display apparatus according to the first embodiment.

FIG. 5 is a flowchart illustrating an example of a video display processing procedure of the video display apparatus according to the first embodiment. FIG. 6 is a diagram for explaining video display processing of the video display apparatus according to the first embodiment.

 FIG. 7 is a diagram for explaining the video display process of the video display device according to the first embodiment.

 FIG. 8 is a diagram for explaining video display processing of the video display apparatus according to the first embodiment.

 FIG. 9 is a diagram for explaining video display processing of the video display apparatus according to the first embodiment.

 FIG. 10 is a diagram for explaining video display processing of the video display apparatus according to the first embodiment.

 FIG. 11 is a diagram for explaining video display processing of the video display apparatus according to the first embodiment.

 FIG. 12 is a flowchart illustrating a video display processing procedure of the video display apparatus according to the second embodiment.

 Explanation of symbols

[0011] 101 imaging unit

 102 Acquisition Department

 103 Display screen

 104 Display controller

 301 Driver's seat

 302 Passenger seat

 311 Right side mirror

 312 Left side mirror

 314 Nolem Mirror

 BEST MODE FOR CARRYING OUT THE INVENTION

Exemplary embodiments of a video display device, a video display method, a video display program, and a computer-readable recording medium recording the program according to the present invention will be described in detail below with reference to the accompanying drawings. Explained. [0013] (Embodiment)

 (Functional configuration of video display device)

 First, the contents of a video display apparatus that is useful in the embodiment of the present invention will be described. FIG. 1 is a block diagram showing an example of a functional configuration of the video display apparatus according to the embodiment of the present invention. In FIG. 1, the video display device is mounted on a moving body such as a vehicle (including a four-wheeled vehicle and a two-wheeled vehicle) and includes an imaging unit 101, an acquiring unit 102, a display screen 103, and a display control unit 104. It has a configuration.

 [0014] The imaging unit 101 images the surroundings of the vehicle. Here, the surroundings of the vehicle include, for example, the range reflected in the reflecting mirror provided inside the vehicle and the left and right reflecting mirrors provided on the side of the vehicle, and the surroundings of the entire vehicle in the vertical and horizontal directions Means.

 [0015] The acquisition unit 102 acquires information on the behavior of the vehicle. Specifically, the information on the vehicle behavior is information indicating the movement or stop state of the vehicle. For example, information on the vehicle speed (speed information, acceleration information, angular velocity information, etc.), inclination angle information, lateral G (Gravity) information, current location information, and / or information associated with operation input can be included.

 Display screen 103 displays an image of the surroundings of the vehicle imaged by imaging unit 101.

 This display screen 103 is, for example, a display screen of an in-vehicle device such as a navigation device that may be mounted inside the vehicle in the vicinity of the left and right reflectors or mounted in front of the center of the driver's seat and passenger seat. It may be.

 [0017] The display control unit 104 controls the display screen 103, and based on the information about the behavior acquired by the acquisition unit 102, at least one of the images around the vehicle imaged by the imaging unit 101 is displayed. Part of the image is displayed on the display screen 103. The at least part of the video may be all of the video around the vehicle imaged by the imaging unit 101, or may be a video obtained by cutting out a part of the video.

[0018] In this way, the display control unit 104 can display at least a part of a captured image around the vehicle on the display screen 103. For example, the image behind the vehicle is displayed by the imaging unit 101. When captured, based on the information about the behavior acquired by the acquisition unit 102, the display screen 103 displays all of the video behind the vehicle or cuts out a part of it. Can be displayed.

 [0019] For this reason, for example, when the vehicle changes lanes, an image of the rear of the vehicle is displayed on the display screen 103 in a wide angle, and other lanes that are difficult to check with a reflector provided inside the vehicle are displayed. Check the situation or display the rear image of the vehicle at a narrow angle while the vehicle is traveling at a low speed on the screen 103 and check the rear blind spot that is difficult to check with the reflectors provided inside the vehicle. be able to.

 [0020] In addition, the display control unit 104 may enlarge or display at least a part of an image around the vehicle imaged by the imaging unit 101 on the display screen 103 or may display it in a divided manner. In this way, it becomes possible for the vehicle driver (user), etc., to see the situation around the vehicle in detail and instantaneously without accompanying a large line of sight movement, thus improving driving safety. Can be expected to lead to

 [0021] Further, information on the behavior of the vehicle acquired by the acquisition unit 102 includes, for example, information on vehicle speed, inclination angle information, lateral G (Gravity) information, current location information, and information associated with an operation input. Therefore, even if there is a problem with the sensors that obtain information about the vehicle speed, it is possible to perform video display processing using other information.

 [0022] (Video Display Processing Procedure of Video Display Device)

 Next, the video display processing procedure of the video display device according to the embodiment of the present invention will be described. FIG. 2 is a flowchart showing an example of a video display processing procedure of the video display device according to the embodiment of the present invention.

 In the flowchart of FIG. 2, first, the surroundings of the vehicle are imaged by the imaging unit 101, and the captured video is input to the display control unit 104 (step S201). Next, the acquisition unit 102 determines whether or not information related to vehicle behavior has been acquired (step S202) .If the acquisition unit 102 determines that the information has been acquired (step S202: Yes), the display control unit 104 acquires the acquired behavior. It is determined what information (for example, information about the speed of the vehicle) is related to the information (step S203).

[0024] Based on the determination result in step S203, the display control unit 104 selects a video to be displayed on the display screen 103 from the captured video (for example, all video images). The selected video is selected (step S204), and the selected video is displayed on the display screen 103 (step S205). Thus, the series of video display processing according to this flowchart is completed.

[0025] By performing the video display processing in this way, the video around the vehicle that changes every moment can be displayed on the display screen 103, so that the field of view of the user of the vehicle can be supplemented. If it is determined in step S202 that the information regarding the behavior of the vehicle is not acquired (step S202: No), the process of step S202 is repeated until it is acquired.

 [0026] As described above, according to the video display apparatus according to the embodiment of the present invention, based on the information on the behavior of the vehicle composed of a plurality of pieces of information, the image of the surroundings of the vehicle is captured. At least a part of the video can be displayed. For this reason, it is possible to reliably acquire information on the behavior of the vehicle so that the user of the vehicle can view not only the image of the reflector but also the situation around the vehicle. Improvements can be made.

 [0027] Next, Example 1 and Example 2 that are useful for the embodiment of the present invention will be described in detail. Here, a case where the video display device which is useful in this embodiment is applied to a private car will be described as an example.

 Example 1

 [0028] (Description of inside of vehicle equipped with video display device)

 First, the inside of a vehicle equipped with a video display apparatus according to Embodiment 1 of the present invention will be described. FIG. 3 is an explanatory diagram showing an example of the interior of the vehicle on which the video display apparatus according to Embodiment 1 of the present invention is mounted.

 In FIG. 3, a console panel in-vehicle device 303 having a display screen (display) 103 in FIG. 1 is provided in front of the vicinity of the center of the driver seat 301 and the passenger seat 302. Further, in front of the driver's seat 301 and the passenger seat 302 and in the vicinity of the right reflector (side mirror) 311 and the left reflector (side mirror) 312 are the display screens (displays) shown in FIG. ) 103 are provided.

[0030] A ceiling mirror 313 near the center inside the vehicle has a reflecting mirror (room mirror) 314. Speaking force 315 is provided on both sides (door side) of the driver seat 301 and the passenger seat 302, respectively. Note that, for example, the imaging unit (in-vehicle power camera) 101 in FIG. 1 facing the rear of the vehicle is provided inside the right side mirror 311 and the left side mirror 312, respectively. The imaging unit 101 may be provided at the rear of the vehicle (not shown), or may be directed to the front of the vehicle, or may be mounted in various forms.

 [0031] (Hardware configuration of video display device)

 Next, a hardware configuration of the video display apparatus according to Embodiment 1 of the present invention will be described. FIG. 4 is a block diagram showing an example of the hardware configuration of the video display apparatus according to Embodiment 1 of the present invention.

 In FIG. 4, the video display apparatus includes a CPU 401 that functions as the display control unit 104 in FIG. 1, a RAM 402, a ROM 403, a memory 404, and a clock 405. In addition, the user operation unit 410, a speed sensor 411 that detects the speed of the running vehicle, an in-vehicle camera 412 that images the surroundings of the vehicle, a tilt angle sensor 413 that detects the tilt angle of the vehicle, and the acceleration of the vehicle Acceleration sensor 414 that detects the angular velocity, angular velocity sensor 415 that detects the angular velocity of the vehicle during cornering, and lateral G sensor that detects lateral G that is an outward force (gravity) generated by centrifugal force during cornering 416 is connected to the display control unit 104.

 [0033] In addition, a GPS 417 that detects current position information (latitude and longitude information) of a vehicle by receiving radio waves from an artificial satellite and a gyro sensor 418 that detects the traveling direction of the vehicle are connected to the display control unit 104. Has been. These sensors 411 and 413 to 418 realize the function of the acquisition unit 102 in FIG. In addition, the function of the imaging unit 101 in FIG.

 The display control unit 104 includes a display 420 that functions as the display screen 103 in FIG. 1, a video circuit 430 that performs video rendering processing on the display 420, an amplifier 421, and a speaker 422. Are connected to the display control unit 104.

Here, the display control unit 104 outputs video information to the video circuit 430, controls the display 420, and based on the information acquired by the sensors 411 and 413 to 418. Thus, at least a part of the image around the vehicle imaged by the in-vehicle camera 412 is displayed. For example, the CPU 401 of the display control unit 104 controls the entire video display device, and executes various arithmetic processes according to the control program, thereby performing overall drive control of each unit included in the video display device.

 The RAM 402 stores so-called variable data in a rewritable manner, and is used as a work area of the CPU 401 or the like. The RAM 402 may be, for example, a volatile memory that erases data stored when the power is turned off, or may be a non-volatile memory that is backed up by a battery or the like.

 [0037] The ROM 403 stores so-called fixed data such as a boot program, for example. Here, specifically, a basic processing program of the video display device is stored. The data stored in the ROM 403 can be rewritten by the user's operation, but is not erased by turning off the power.

 [0038] The memory 404 stores various types of information. Specifically, it is, for example, a hard disk (HD), instead of or in addition to HD, an optical disk (CD-ROM (CD-R, CD-RW), MO, DVD (Digital Versatile Disk)) or memory It may be a removable recording medium such as a card. The clock 405 measures and stores information related to the current time.

 [0039] User operation unit 410 receives an operation input to the video display device by a user or the like. This user operation unit 410 is, for example, a variety of known devices such as a switch for detecting physical depression / non-depression, a keyboard, a touch panel, a joystick, a trackball, a remote controller, and buttons provided on a video display device. It is configured by form or a combination of these to realize its functions.

 Here, for example, when a touch panel is adopted as a form of the user operation unit 410, the touch panel is used by being stacked on the display screen side of the display 420. Then, the display timing on the display 420, the operation input timing on the touch panel (user operation unit 410) and the position coordinates thereof are managed by the display control unit 104, for example, and the input information is recognized.

As described above, the touch panel stacked on the display 420 as a form of the user operation unit 410. By adopting the network, it is possible to perform many operation inputs without increasing the size of the user operation unit 410. As the touch panel, various known touch panels such as a resistance film type and a pressure sensitive type can be used.

 Note that GPS (Global Positioning System) 417 is provided with a GPS antenna (not shown). GPS is a system that accurately determines the position on the ground by receiving radio waves from four or more artificial satellites. For example, the GPS positioning data obtained by the GPS antenna and the absolute direction data of the traveling direction of the vehicle are obtained from the speed sensor 411, the angular velocity sensor 415, the travel distance sensor (not shown), the inclination angle sensor 413, etc. Is corrected to obtain vehicle current point information.

 [0043] The GPS 417 includes a tuner that demodulates received radio waves, an arithmetic circuit that calculates a position based on the demodulated data, and the like. The GPS 417 outputs the obtained current vehicle location information to the display control unit 104.

 The display 420 displays an image around the vehicle imaged by the in-vehicle camera 412 based on the video information output from the display control unit 104 and subjected to the drawing process by the video circuit 430. Specifically, the display 420 is configured by a display device such as a CRT (Cathode Ray Tube), a liquid crystal display, an organic EL display, and a plasma display.

 The amplifier 421 controls output of sound output from the speaker 422. Specifically, for example, the sound volume adjustment or equalizing process is performed, and the sound output state is controlled. The control of the sound output by the amplifier 421 is performed by, for example, an operation input from the user operation unit 410 or a control by the display control unit 104.

 The speaker 422 outputs (reproduces) the sound controlled by the amplifier 421. For example, this speaker 422 is provided with headphones, so that the sound output field is changed so that the entire interior of the vehicle becomes a sound field.

 [0047] The communication interface (IZF) 423 is, for example, an ECU (Electronic

Various information is transmitted and received between the display control unit 104 and other devices such as the Control Unit) and other devices such as the remote control device. The transmission and reception of various types of information in IZF423 is performed regardless of whether it is wired or wireless. I / F423 is shown The communication server (not shown) via a base station that is not connected may have a function of performing wireless communication of each known method. In this case, the I / F 423 performs data communication with an external communication device by radio.

 [0048] The video circuit 430 performs drawing processing and the like so as to optimally display on the display 420 based on the video information of the video around the vehicle imaged by the in-vehicle camera 412 and output from the display control unit 104. The processed video information is output to the display 420. Specifically, the video circuit 430 includes, for example, a graphic controller that controls the entire display 420, a buffer memory such as a video RAM (VRAM) that temporarily stores information such as video that can be displayed immediately, and the like. Based on the information output from the graphics controller, it is composed of a control IC that controls video display on the display 420, a GPU (Graphics Processing Unit), and the like. The video circuit 430 may be included in the display control unit 104.

 [0049] Further, although not shown, a map DB (Database) provided in a general in-vehicle navigation device, a navigation control unit, a position recognition unit, a guidance sound output unit, a point search unit, The route acquisition unit, the route guidance unit, and the guidance sound generation unit may be included.

 Here, the navigation control unit outputs which position on the map is traveling to the display 420 based on the vehicle position information calculated by the position recognition unit and the map DB. The guide sound output unit reproduces the guide sound by controlling the output to one or a plurality of speakers 422 using the amplifier 421.

 [0051] The map DB used in the navigation control unit is stored in advance in the memory 404, for example, and includes background information that represents features (features) such as buildings, rivers, and the ground surface, and road shapes that represent the shape of the road. Information and is rendered in two or three dimensions on the display 420.

[0052] The background information includes background shape information representing the shape of the background and background type information representing the type of the background. The background shape information includes, for example, information indicating feature points, polylines, polygons, feature coordinates, and the like. The background type information includes, for example, text information indicating the name, address, telephone number, and the like of the feature, type information indicating the type of the feature such as a building “river”, and the like. [0053] The road shape information is information related to a road network having a plurality of nodes and links. The node is information indicating an intersection where a plurality of roads intersect, such as a three-way “crossroad” and a five-way. A link is information indicating a road connecting nodes. Some links have shape interpolation points that allow the expression of curved roads.

 [0054] In addition, the road shape information includes traffic condition information. The traffic condition information is information indicating the characteristics of the intersection, the length (distance) of each link, the vehicle width, the traveling direction, the traffic prohibition, the road type, and the like. The characteristics of intersections include, for example, complex intersections such as three- and five-way intersections, intersections where roads diverge at shallow angles, intersections around destination points, highway entrances and exits, and intersections with a high route deviation rate. Can be mentioned. Note that the route departure rate can be calculated from, for example, past travel history. Examples of road types include expressways, toll roads, and general roads.

 The point search unit searches for an arbitrary point based on the information input from the user operation unit 410 and outputs it to the display 420. Further, the route acquisition unit calculates an optimal route to the point based on the point information obtained by the point search unit. In addition, the route guidance unit generates real-time route guidance information based on the information obtained by the route acquisition unit and the vehicle position information.

 The guidance sound generation unit generates tone and voice data corresponding to the guidance pattern. In other words, based on the route information, a virtual sound source corresponding to the guidance point is set and voice guidance information is generated, and this is output to the guidance sound output unit.

 [0057] (Video Display Processing Procedure of Video Display Device)

 Next, a video display processing procedure of the video display apparatus according to Embodiment 1 of the present invention will be described. FIG. 5 is a flowchart showing an example of a video display processing procedure of the video display apparatus according to Embodiment 1 of the present invention. Here, a video display process in a case where the information regarding the behavior of the vehicle acquired by the acquisition unit 102 in FIG. 1 is information regarding the speed of the vehicle will be described.

In FIG. 5, first, the display control unit 104 (refer to FIG. 4, the same applies hereinafter) is displayed on the periphery of the vehicle imaged by the in-vehicle camera 412 (refer to FIG. 4; the same applies hereinafter) as the imaging unit 101 in FIG. Video is input (step S501). After inputting the video, the display control unit 104 displays the video. It is determined whether or not the display 420 (see FIG. 4, the same applies hereinafter) as the display screen 103 in FIG. 3 is ON via the circuit 430 (see FIG. 4, the same applies hereinafter) (step S502).

[0059] When the display control unit 104 determines that the display 420 is ON (step S502: Yes), the display control unit 104 determines that the speed sensor 411 (see FIG. 4, the same applies hereinafter), the tilt angle sensor 413, and so on. (See Fig. 4, the same applies hereinafter), acceleration sensor 414 (see Fig. 4, same applies below), angular velocity sensor 415 (see Fig. 4, same applies below), and lateral G sensor 416 (see Fig. 4, same applies below) Among the obtained information on the behavior of the vehicle, information on the speed of the vehicle obtained by the speed sensor 411, the acceleration sensor 414, and the angular velocity sensor 415 is acquired (step S503).

 [0060] When the display control unit 104 determines that the display 420 is not ◯ N (step S502: No), the display control unit 104 determines whether or not the display 420 in step S502 is ◯ N. Repeat.

 [0061] After acquiring information about the speed obtained by each of the sensors 411, 414, and 415, the display control unit 104 is based on various control parameters stored in the memory 404 (see FIG. 4, the same applies hereinafter). Thus, it is determined whether or not the information regarding the speed is equal to or greater than a predetermined threshold (step S504). The determination process in step S504 is performed, for example, by determining whether or not the vehicle speed is higher than the result of analyzing information related to the speed when the threshold is the vehicle speed = 30 km / h.

 [0062] When the display control unit 104 determines that the information regarding the speed is equal to or greater than the predetermined threshold (step S504: Yes), the display control unit 104, for example, the vehicle obtained as an image around the vehicle. Video information of the rear video (wide-angle video) is output to the video circuit 430 (see Fig. 4; the same applies hereinafter), the video circuit 430 is controlled to perform drawing processing on the display 420, and a part of the wide-angle video is cut out Is displayed on the display 420 (step S505).

[0063] When the display control unit 104 determines that the information regarding the speed is not equal to or greater than the predetermined threshold (step S504: No), the display control unit 104, for example, displays the rear of the vehicle obtained as an image around the vehicle. The video information of the video (wide-angle video) is output to the video circuit 430, and the video circuit 430 is controlled to perform drawing processing on the display 420, so that all of the wide-angle video is displayed on the display 420 (step S507). [0064] In step S505, after a part of the wide-angle video is cut out and displayed on the display 420, the display control unit 104 has an operation input from the user operation unit 410 for interrupting the video display processing. Whether or not (step S506). If the display control unit 104 determines that there is an operation input (step S506: Yes), the process proceeds to step S507, and the display control unit 104 displays all of the wide-angle video on the display 420 (step S507). .

 [0065] When the display control unit 104 determines that there is no operation input (step S506: No), the process returns to step S504, and the display control unit 104 determines whether or not the information regarding the speed is equal to or greater than a predetermined threshold value. Judgment processing is performed (step S504). That is, in this video display process, for example, when the threshold is vehicle speed = 30 km / h and the vehicle speed is higher (step S504: Yes), a part of the wide-angle video is cut out and displayed. When the vehicle speed is less than that (step S504: No), the display control unit 104 performs processing to display all of the wide-angle video.

 [0066] In step S507, after displaying all of the wide-angle video on the display 420, the display control unit 104 determines whether or not the display 420 is OFF via the video circuit 430 (step S508). When the display control unit 104 determines that the display 420 is OFF (step S508: Yes), the display control unit 104 ends a series of video display processing according to this flowchart.

 [0067] On the other hand, when the display control unit 104 determines that the display 420 is not OFF

 (Step S508: No), the process returns to Step S507, and the display control unit 104 displays all of the wide-angle video on the display 420 (Step S507) .The process proceeds to Step S508, and whether the display 420 is OFF. A determination process of whether or not is performed (step S508).

[0068] Here, the video display processing in step S505 will be described. 6 to 11 are diagrams for explaining the video display processing of the video display apparatus according to Embodiment 1 of the present invention. In FIG. 6, for example, the imaging unit 101 mounted in the right side mirror 311 of the vehicle in FIG. 3, the inside of the left side mirror 312 and the rear of the vehicle (not shown in FIG. Figure 6 shows an image of the surroundings of the vehicle (wide-angle image) captured by. The video shown in FIG. 6 is, for example, the console panel in-vehicle device in FIG. It is displayed on the display screen 103 (display 420 in FIG. 4) of the device 303.

[0069] Then, for example, when it is assumed that the image power shown in the right side mirror 311 is as shown in FIG. 7, the display control unit 104 (see FIG. 4) displays one of the images shown in FIG. 6 in step S505. The ability to display the image shown in FIG. 8 on the display screen 103 (display 420 in FIG. 4) in the vicinity of the front right side mirror 311 of the driver's seat 301 in FIG. .

 Thus, for example, as shown in FIG. 9, the rear view force that the driver can confirm with the right side mirror 311 (see FIG. 3) is shown in FIG. Thus, at the junction, the driver displays not only the image of range A but also the image of range B indicated by the dotted diagonal line on display screen 103 (display 420 in FIG. 4) near the right side mirror 311. Can be confirmed.

 Similarly, as shown in FIG. 11, for example, when changing lanes, the driver displays not only the image of range A but also the image of range B on display screen 103 in the vicinity of right side mirror 311 (FIG. 4). In this case, it can be confirmed on the display 420). For this reason, even when driving at risk such as merging points or lane changes, the driver can see the situation around the vehicle only with the images of the mirrors 311, 312, and 314 in Fig. 3. Therefore, safety can be improved.

 [0072] It is to be noted that display control unit 104 and video circuit 430 use a variety of well-known techniques to display at least a part of a video image of the surroundings of the vehicle on display screen 103, so-called enlarged display or division. It is also possible to display or change various display forms such as colors.

 [0073] As described above, the video display apparatus according to the first embodiment has the information power regarding the vehicle behavior acquired by the sensors 4111 and 413 to 416 in FIG. If it is equal to or greater than the predetermined threshold, at least a part of the image around the vehicle can be cut out and displayed on the display 420 in FIG.

[0074] The display change can be switched by an operation input from the user operation unit 410 in FIG. 4 or a threshold determination process in step S504. For this reason, the driver of the vehicle As a result, not only the image of the reflector but also the situation (image) around the vehicle can be seen instantly and easily without being aware of it under various driving conditions. Can be improved.

 Example 2

 [0075] Next, a video display apparatus according to Example 2 will be described. In the video display device according to the first embodiment, if the information on the behavior of the vehicle acquired by the acquisition unit 102 in FIG. When it is determined that the threshold is equal to or greater than a predetermined threshold, a part of the captured video is cut out and displayed to improve the safety of operation.

 On the other hand, in the video display device according to the second embodiment, when the information on the behavior of the vehicle acquired by the acquisition unit 102 in FIG. 1 is the current location information of the vehicle, the current location information indicates the specific location. A configuration is adopted in which it is determined whether or not it is point information to be shown, and when it is point information indicating a specific point, a part of the captured video is cut out and displayed. Since the hardware configuration of the second embodiment is the same as that of the first embodiment, the same reference numerals as those in FIG. 4 are used in the following description, and illustration and description thereof are omitted.

[0077] (Video Display Processing Procedure of Video Display Device)

 The video display processing procedure of the video display apparatus according to the second embodiment will be described below. FIG. 12 is a flowchart of the video display processing procedure of the video display apparatus according to the second embodiment. In FIG. 12, first, the display control unit 104 inputs an image of the surroundings of the vehicle imaged by the in-vehicle camera 412 as the imaging unit 101 in FIG. 3 (step S 1201). After inputting the video, the display control unit 104 determines whether or not the display 420 as the display screen 103 in FIG. 3 is ON via the video circuit 430 (step S1202).

[0078] When the display control unit 104 determines that the display 420 is ON (step S1202: Yes), the display control unit 104 is obtained by the GPS417 (see FIG. 4, the same applies hereinafter). The current location information of the acquired vehicle is acquired (step S1203). On the other hand, when the display control unit 104 determines that the display 420 is not ON (step S1202: No), the display control unit 104 determines whether the display 420 in step S1202 is ON. Repeat the process.

 [0079] Next, after acquiring the current position information of the vehicle obtained by the GPS 417, the display control unit 104 determines the current position information based on various control parameters and map information stored in the memory 404. It is determined whether or not the point information indicates a specific point (step S1204).

 [0080] Here, the specific point is a point where the driver's field of view such as an expressway or a parking lot is to be expanded as much as possible, and the determination process in step S1204 is, for example, the current point. This is done by judging whether the current location = highway or not. For example, it is assumed that it is a general road if it is not a specific point.

 [0081] When the display control unit 104 determines that the current point information is point information indicating a specific point (step S1204: Yes), the display control unit 104, for example, displays an image around the vehicle. The obtained video information of the rear of the vehicle (wide-angle video) is output to the video circuit 430, and the video circuit 430 is controlled to perform drawing processing on the display 420, and a part of the wide-angle video is cut out on the display 420. It is displayed (step S1205).

 [0082] If the display control unit 104 determines that the current point information is not point information indicating a specific point (step S1204: No), the display control unit 104 obtains, for example, an image of the surroundings of the vehicle. The video information of the rear of the vehicle (wide-angle video) is output to the video circuit 430, and the video circuit 430 is controlled to perform drawing processing on the display 420, so that all of the wide-angle video is displayed on the display 420 (step S 1207).

 [0083] In step S1205, after a part of the wide-angle video is cut out and displayed on the display 420, the display control unit 104 determines whether there is an operation input of the user operation unit 410 force to interrupt the video display processing. It is determined whether or not (step S 1206). If the display control unit 104 determines that there is an operation input (step S1206: Yes), the process proceeds to step S1207, and the display control unit 104 displays all of the wide-angle video on the display 420 ( Step S 1207).

[0084] If the display control unit 104 determines that there is no operation input (step S120 6: No), the process returns to step S1204, and the display control unit 104 displays point information indicating that the current point information indicates a specific point. Whether or not is determined is performed (step S1204). That is, this movie In the image display process, for example, if the current location information is current location = highway (step S1204: Yes), a part of the wide-angle video is cut out and displayed, and the current location information is current location = general road. If it is (step S 1204: No), the display control unit 104 performs processing to display all of the wide-angle video.

 [0085] After displaying all of the wide-angle video on the display 420 in step S1207, the display control unit 104 determines whether the display 420 is OFF via the video circuit 430 (step S1207). S1208). If the display control unit 104 determines that the display 420 is OFF (step S1208: Yes), the display control unit 104 ends a series of video display processing according to this flowchart.

 [0086] On the other hand, when the display control unit 104 determines that the display 420 is not OFF

 (Step S1208: No), returning to Step S1207, the display control unit 104 displays all of the wide-angle video on the display 420 (Step S1207), proceeds to Step S1208, and the display 420 is OFF. A process for determining whether or not there is present is performed (step S1208). The specific video display processing in step S 1205 in the video display device of the second embodiment is the same as that described with reference to FIGS. 6 to 11 in the first embodiment, and thus the description thereof is omitted here. To do.

 [0087] As described above, the video display apparatus according to the second embodiment has the case where the current location information of the vehicle acquired by the GPS 417 in Fig. 4 is location information indicating a specific location such as an expressway. In addition, it is possible to cut out at least a part of the video around the vehicle and display it on the display 420 in FIG. 4, and display it as it is if it is not point information indicating a specific point.

 The display change can be switched by an operation input from the user operation unit 410 in FIG. 4 or a point information determination process in step S1204. This makes it possible for a vehicle driver to view not only the image of the reflector but also the situation around the vehicle (video) instantly and easily in various places without being aware of it. Therefore, driving safety can be improved.

As described above, according to the video display device, the video display method, the video display program, and the computer-readable recording medium recording the program according to the present invention. For example, at least a part of the captured image around the vehicle is displayed on the display screen based on information on the behavior of the vehicle composed of information on the vehicle speed and current location information. Can do.

 [0090] For this reason, information on the behavior of the vehicle is reliably acquired, and the vehicle user can view not only the image of the reflector but also the situation (image) around the vehicle instantaneously, safely, reliably and easily. This has the effect of improving the safety of driving in various places and driving situations.

 Note that the video display method described in the present embodiment can be realized by executing a program prepared in advance on a computer such as a personal computer.

. This program is recorded on a computer-readable recording medium such as a hard disk, flexible disk, CD-ROM, M0, or DVD, and is executed by being read from the recording medium by the computer. The program may be a transmission medium that can be distributed via a network such as the Internet.

Claims

The scope of the claims [1] imaging means for imaging the surroundings of the vehicle;  Obtaining means for obtaining information on the behavior of the vehicle;  Display means having a display screen;  Display control means for controlling the display screen to display at least a part of the video around the vehicle imaged by the imaging means based on information on the behavior acquired by the acquisition means. When,  A video display device comprising:  [2] The acquisition means acquires information regarding the speed of the vehicle as information regarding the behavior of the vehicle,  2. The video display according to claim 1, wherein the display control unit displays at least a part of the video when the information about the speed acquired by the acquisition unit is equal to or greater than a predetermined threshold. apparatus. [3] The acquisition means acquires the current position information of the vehicle as information on the behavior of the vehicle,  The display control means displays at least a part of the video when the current point information acquired by the acquisition means is point information indicating a specific point. The video display device described in 1. [4] An input process for receiving input of images around the vehicle,  An acquisition step of acquiring information relating to the behavior of the vehicle;  A display step of displaying at least a portion of the video input by the input step on a display screen based on information on the behavior acquired by the acquisition step. . [5] The acquisition step acquires information on the speed of the vehicle as information on the behavior of the vehicle, The display step displays at least a part of the video when the information about the speed acquired in the acquisition step is equal to or greater than a predetermined threshold. The video display method according to claim 4. [6] The acquisition step acquires the current position information of the vehicle as information on the behavior of the vehicle,  6. The display step according to claim 4 or 5, wherein when the current location information acquired by the acquisition step is location information indicating a specific location, at least a part of the video is displayed. The video display method described. 7. A video display program that causes a computer to execute the video display method according to any one of claims 4 to 6. [8] A computer-readable recording medium in which the video display program according to claim 7 is recorded.