TW201411266A - Eye-protection projection method - Google Patents

Abstract

The present invention relates to an eye-protection projection method, in which a presenter is in front of a projection screen. In the projection method, an infrared vision domain processor of a detection module is electrically connected with an infrared projector and an image receiver. The infrared projector is used to project invisible infrared light onto the projection screen. The image receiver captures an image of infrared light. Furthermore, the infrared vision domain processor performs image processing of texture analysis on the received image of infrared light, so as to separate two regions for obtaining a profile of the presenter and conducting a comparison to find a geometric figure region, which is then transmitted to a computer. After the computer performs dark processing on the geometric figure region of the projection data, the projector is employed to project such that the dark geometric figure region in the image screen is exactly aligned with the face of the presenter, thereby allowing the presenter to look squarely at the participants in front without being stimulated by blaze. The detection module also can continuously detect the position of the presenter, so as to allow the dark processed position to move according to the position of the presenter, thereby increasing the smoothness, clarity, comfort and suitability for a conference.

Description

Eye protection projection method

The invention provides an eye-protecting method, in particular to a reporter who uses invisible infrared light to project in front of a projection screen, and analyzes, separates and compares the captured infrared light image, so that the computer is in the projection data. The geometry area is darkened and the reporter's face is not subject to strong light stimuli, and the location of the dark processing can move with the reporter.

According to the diversified development of society, the communication between people is becoming more and more important, such as internal education training, customer meetings, copywriting or product descriptions outside the company, speech activities, etc. Life is often seen around, but in order to allow participants to go deeper into the topic and let the publishers express their ideas more clearly, it is often necessary to use projection devices to make the presentation of information more convenient, so as to improve work efficiency.

However, when the presenter is standing in front of the projection screen and facing the projection device and the attendee, the light projected by the projection device will be incident on the eye of the briefer, which will affect the viewer's vision, so many people will R&D and improvement have been made in response to this problem. For example, U.S. Patent No. 6,361,173 discloses a matte signal method for a projector, which first projects a uniform infrared light source onto the screen, projecting an image to be displayed. Projection screen, and then use the infrared sensing camera to detect the pixel signal level on the screen, by defining the pixel level of the clearly displayed screen area as 0. To identify the profile area of the briefer whose pixel level is not 0, and then suppress the signal level of the area to reduce the brightness of the image projected to the presenter.

In addition, the Republic of China Patent No. M356146 discloses that when the projection operation is performed, the position of the face is recognized by the image recognition technology, and the light of the dark color is projected on the relative position of the face of the user in front of the screen; No. 1325998, the sensor is used to sense the horizontal position of the user in front of the screen, and a horizontal position signal is sent, the receiver receives the horizontal position signal, and the processor generates a screen display image superimposed on a projection according to the horizontal position signal. On the screen. The screen projector projects the superimposed image onto the screen. When the screen is projected, the screen display screen covers the user's face. The above processing method can be easily affected by the change of the indoor illumination level (such as the door and window or the light is turned on), and When a face or a character appears on the projection screen, the problem of misjudgment occurs, and the loss of portability and installation is caused.

The above-mentioned conventional eye-projection method has many problems and defects, and this is the object that the inventor and the person engaged in the industry desire to improve.

Therefore, in view of the above-mentioned shortcomings, the inventors have collected relevant information, and through multiple evaluations and considerations, and through years of experience in the industry, through continuous trial and modification, the invention patents of such eye-protection methods have been designed. .

The main purpose of the present invention is that the infrared projector emits invisible infrared light, and the reporter in front of the projection screen shields part of the infrared light, and the infrared light is in a matrix. body The arrangement density and the size of the area change, and the infrared field of view processor calculates the geometric area of the reporter's outline by texture analysis, and then transmits it to the computer to darken the geometric area in the projection data. When the projector is projected, the reporter's eye is aligned with the geometric area of the dark processing, so that the reporter can not be stimulated by strong light and can face the participants in front, which can improve the smoothness, clarity and comfort of the meeting.

The secondary purpose of the present invention is that the detection module continuously detects the position of the reporter, and through the calculation, analysis and comparison processing, the position of the computer for the dark processing is moved by the reporter, so that the report can be made. When moving the commentary, it still has the effect of eye-projection and improved applicability, thereby achieving the purpose of improving efficacy and applicability.

Another object of the present invention is that the detection module does not directly judge the general image, but uses the invisible infrared light to perform projection, capture, calculation, analysis, and comparison processing, thereby avoiding the detection mode. The group has an influence on the eye of the reporter, and because the invisible infrared light emitted by the detection module is different from the image projected by the projector, the detection module can be prevented from projecting a face or a person to the projector. The image is misjudged, which improves the comfort and accuracy of detection.

Another object of the present invention is that the reporter only needs to carry the detection module, the computer and the projector when going out, and even when the detection module is disposed in the projector, only the computer and the projector need to be carried, not only It is easy to carry and easy to set up, which can improve the portability and ease of use.

In order to achieve the above objects and effects, the technical means and the configuration of the present invention will be described in detail with reference to the preferred embodiments of the present invention.

Please refer to the first and third figures, which are block diagrams and schematic diagrams of the preferred embodiment of the present invention. It can be clearly seen from the figure, which includes the detection module 1 and the computer 2: the detection The module 1 has an infrared field of view processor 11 , and the infrared field of view processor 11 is electrically connected to an infrared projector 12 that is controlled by the infrared field of view processor 11 to project infrared light toward the projection screen 3 , and the infrared field of view processor 11 The image receiver 13 is connected to the projection screen 3 to capture infrared light images. The image receiver 13 can be an infrared receiver or an infrared image sensor.

The computer 2 is electrically connected to the infrared field of view processor 11 of the detection module 1 , and the computer 2 is electrically connected to a projector 21 that projects the image toward the projection screen 3 .

The computer 2, the projector 21, and the projection screen 3 described above are conventional techniques, and the details constitute the main points of the invention, and will not be described again.

Please refer to the first, second, third, fourth, fifth and sixth figures, which are block diagrams, step flow diagrams, schematic diagrams of the use, infrared light projectors, infrared light diagrams, and comparisons. Schematic diagram of the geometrical area and a schematic diagram of the projected dark geometrical area, as can be clearly seen from the figure The eye protection projection method includes:

(501) The computer 2 controls the projector 21 to project the original image frame to the projection screen 3, and the infrared vision processor 11 of the detection module 1 also controls the infrared projector 12 to emit invisible infrared light.

(502) The image receiver 13 captures the infrared light and transmits the infrared image signal to the infrared field of view processor 11.

(503) The infrared field of view processor 11 calculates the distribution distance or area size of the plurality of predetermined light source patterns in the infrared image signal, and separates the projection screen 3 from the reporter 4 by texture analysis to obtain a report. The outline of the 4th.

(504) The infrared field of view processor 11 then finds a most consistent geometric area for the contour comparison of the reporter 4 area, and then transmits the area data to the computer 2.

(505) The computer 2 will darken the geometric area in the projection data, and then transfer the processed projection data to the projector 21 for projection.

In the above steps, the computer 2 projects the original image frame to the projection screen 3 for controlling the projector 21, and the infrared vision processor 11 of the detection module 1 also controls the infrared projector 12 to emit invisible infrared light, which is invisible to infrared rays. The light is a matrix-shaped plurality of predetermined light source patterns, and the infrared light is projected on the projection screen 3, and the infrared light is captured by the image receiver 13, and the infrared image signal is transmitted to the infrared field processor 11 for texture analysis. Like processing.

When the reporter 4 stands in front of the projection screen 3 for explanation, since the distance between the reporter 4 and the infrared projector 12 is smaller than the distance between the projection screen 3 and the infrared projector 12, the reporter 4 will cover the portion. Infrared light, but because the reporter 4 is closer to the infrared projector 12, when the infrared light is projected on the body of the reporter 4, the plurality of predetermined light source patterns are arranged more densely and the area is smaller, so After the image receiver 13 transmits the captured infrared image signal to the infrared field of view processor 11, the infrared field of view processor 11 calculates the distribution distance or area size of the plurality of predetermined light source patterns in the infrared image signal, and transmits the texture through the texture. The analysis method separates the projection screen 3 from the two regions of the reporter 4, and the outline of the reporter 4 can be obtained (for example, by using the predetermined number of light source patterns in the unit area as the discrimination of the regional characteristics, or by using the two predetermined light source patterns. The distance is determined as the regional characteristic, the image is segmented to find the boundary contour between the two regions, and then the contour of the reporter 4 region is transmitted through Find the most consistent geometric area (such as rectangle, circle or ellipse, etc.) by comparing the top down, the whole, the maxima or the minimum value, and then transfer the area data to the computer 2, the computer 2 will project the projection After the geometrical area in the data is darkened, the processed projection data is transmitted to the projector 21 for projection, and the processed image is projected onto the projection screen 3.

Because the dark geometric area in the processed image frame of the projector 21 happens to be the position of the reporter 4 or its face, and the reporter 4 is in the solution When speaking, the face is constantly facing the direction of the participant (ie, the direction of the projector 21), and the reporter's 4 eyes are not directly projected by the projected light source, so that the reporter's 4 eyes can be prevented from stinging. Or the situation of discomfort, and also allows the reporter 4 to face the participants in front of the meeting, you can know the expressions and attitudes of the participants, you can adjust the tone and explain the depth of the content according to the situation, which can improve the smoothness and clarity of the meeting. Comfort.

In addition, because the reporter 4 in the conference does not stand in the local interpretation, but moves to explain the different positions of the image on the projection screen 3, the detection module 1 continuously detects the position of the reporter 4, Through the above calculation, analysis and comparison processing, the position of the computer 2 for the dark processing is moved with the reporter 4, so that the reporter 4 will not be limited by the position, but can move according to the actual situation to explain, and then It can improve the effect of eye protection projection and applicability.

In addition, please refer to the first, third, and seventh figures, which are block diagrams, schematic diagrams of use, and block diagrams of another embodiment, which can be clearly seen from the drawings, because it is not directly Judging from the general image, but through the invisible infrared light, the infrared projector 12 does not affect the eyes of the reporter when the light source is emitted, and when the projector 21 projects an image with a face or a person, The infrared view processor 11 does not cause a misjudgment. Further, when the reporter 4 goes out, since only the detection module 1, the computer 2, and the projector 21 need to be carried, if the detection module 1 is set In the projector 21, only the computer 2 and the projector 21 need to be carried, Nowadays, both the computer 2 and the projector 21 are continuously developed in a light, thin and short direction, and the reporter 4 is not only convenient to carry but also convenient to display, thereby achieving the purpose of improving portability and usability.

The above-mentioned eye-projection method of the present invention has the following advantages in practical use, such as:

(1) The infrared projector 12 of the detecting module 1 emits invisible infrared light, and the invisible infrared light is a matrix-shaped plurality of predetermined light source patterns, and the reporter 4 standing in front of the projection screen 3 shields the portion. The infrared light causes the infrared light array density and the area size projected on the reporter 4 to change, and the infrared vision processor 11 calculates the outline of the reporter 4 through texture analysis, and compares and finds the geometric area. It can be transmitted to the computer 2 to darken the geometric area in the projection data, so that when the projector 21 projects, the reporter's 4 eyes will not be directly projected by the light source, so that the reporter 4 will not be stimulated by strong light, and Face up to the front of the meeting, which can improve the smoothness, clarity and comfort of the meeting.

(2) The detection module 1 is for continuously detecting the position of the reporter 4, and through the calculation, analysis and comparison processing, the position of the computer 2 for the dark processing is moved with the reporter 4, so that the reporter 4 can be made. When moving the commentary, it still has the effect of eye-projection and improved applicability.

(3) The detection module 1 does not directly judge the general image, but uses the invisible infrared light to project, capture, calculate, analyze and The comparison processing can avoid the influence on the eyes of the reporter 4, and can avoid the misjudgment of the image projected by the projector 21 with a face or a person.

(4) The reporter 4 only needs to carry the detection module 1, the computer 2 and the projector 21 when going out, and even when the detection module 1 is disposed in the projector 21, only the computer 2 and the projector 21 need to be carried. It is not only easy to carry but also very convenient to display.

Therefore, the present invention is mainly directed to an eye-protecting method, and the infrared projector 12 of the detecting module 1 emits invisible infrared light, and the invisible infrared light is a matrix-shaped plurality of predetermined light source patterns, so that the front of the projection screen 3 The reporter 4 shields part of the infrared light to produce a change in arrangement density and area size, and the infrared field of view processor 11 calculates the geometry area that matches the contour of the reporter 4 and transmits it to the computer 2 to project the projection data. The geometrical area in the dark is processed so that the reporter's 4 eyes are not directly projected by the light source of the projector 21, and the front-facing participants can be directly viewed, thereby improving the smoothness, clarity and comfort of the conference as the main protection focus. Only the detection module 1 continuously detects the position of the reporter 4, and the position where the computer 2 performs the dark processing moves with the reporter 4, so as to have the advantages of improving the efficiency and applicability, but the above is only The preferred embodiments of the present invention are not intended to limit the scope of the present invention, so that the simple modifications and equivalents of the present invention and the contents of the drawings are used. The structural changes are all included in the scope of the patent of the present invention and are combined with Chen Ming.

In summary, the above-mentioned eye-projection method of the present invention can achieve its efficacy and purpose during implementation and operation, so the invention is an invention with excellent practicability, and is an application for conforming to the invention patent, To file an application, I hope that the trial committee will grant the case as soon as possible to protect the intensive research and development of the inventor. If there is any doubt in the audit committee, please do not hesitate to give instructions to the inventor, and the inventor will try his best to cooperate with him.

1‧‧‧Detection module

11‧‧‧Infrared Vision Processor

12‧‧‧Infrared projector

13‧‧‧Image Receiver

2‧‧‧ computer

21‧‧‧Projector

3‧‧‧Projection screen

4‧‧‧Reporter

The first figure is a block diagram of a preferred embodiment of the invention.

The second diagram is a flow chart of the steps of the present invention.

The third figure is a schematic view of the invention when it is used.

The fourth figure is a schematic diagram of the infrared projector of the present invention emitting infrared light.

The fifth figure is a schematic diagram of the comparison geometry area of the present invention.

The sixth figure is a schematic diagram of the projection of the dark geometric region of the present invention.

Figure 7 is a block diagram of another embodiment of the present invention.

Claims (6)

An eye-protecting method, the reporter is located in front of the projection screen, and the computer-controlled projector projects the original image image toward the projection screen, and the projection method comprises: the detection module has an infrared vision processor, and the infrared vision processor An infrared projector is electrically connected, and the infrared projector projects invisible infrared light toward the projection screen, and the infrared vision processor is electrically connected to the image receiver, and the image receiver faces the projection screen to capture the infrared light image, and After receiving the infrared light image signal transmitted by the image receiver, the infrared field processor performs image processing of texture analysis, separates the projection screen from the two regions of the reporter to obtain the contour of the reporter, and then finds the geometric figure by comparison. The area and the area data are transmitted to the computer, and the computer darkens the geometric area in the projection data, and then transfers the processed projection data to the projector, so that the projector projects the processed image image onto the projection screen, so that the projector The dark geometric area in the image frame is aligned to the reporter's face. The eye-projection method of claim 1, wherein the distance between the reporter and the infrared projector is smaller than the distance between the projection screen and the infrared projector, and the infrared projector continuously projects the infrared light. Firstly, it is obscured by the reporter. The invisible infrared light is a matrix-shaped plurality of predetermined light source patterns. The infrared light projected on the reporter's multiple predetermined light source patterns will be arranged more densely and the area will be smaller. The infrared field of view processor After receiving the infrared image signal transmitted by the image receiver, the distribution distance or area size of the plurality of predetermined light source patterns in the infrared image signal is calculated, and then the texture analysis is performed. Separate two areas. The method for projecting an eye according to claim 2, wherein the infrared view processor separates the two regions by texture analysis, and uses the predetermined number of light source patterns in the unit area as the regional characteristic. Perform image segmentation to find the boundary contour between the two regions. The eye-projection method of claim 2, wherein the infrared field-of-view processor separates the two regions by texture analysis, and uses the distance between the two predetermined light source patterns as the regional characteristic discrimination, and performs Image segmentation finds the boundary contour between the two regions. The eye protection projection method of claim 1, wherein the infrared field of view processor compares the geometrical area to find out by comparing the top to bottom, the whole, the maximum value or the minimum value. One of the most consistent geometric areas. The eye protection projection method of claim 5, wherein the geometrical area is rectangular, circular or elliptical.