JPH03226194A - Electronic conference device - Google Patents

Abstract

PURPOSE:To explain a video on a display screen in an easily understandable way by projecting the video from a video source onto the display screen, using an image pickup means so as to pick up an explainer making explanation and displaying the video of the explainer superimposingly on the video from the video source. CONSTITUTION:An explainer 18 is picked up by an image pickup means 20 and an image 18A picked up is projected superimposingly onto a video VD1 on a display screen 13C and/or other display screen 15A. That is, the image picture 18A of the explainer 18 making explanation based on the video is displayed superimposingly on the video projected on the display screen 13C and the indication motion of the explainer 18 is visible directly on the display screens 13C, 15A. Thus, an indicating part 18B by the explainer 18 on the displayed video is easily recognized.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Use The present invention relates to an electronic conference device, and is suitable for use when holding a conference using display means such as a projector device, for example.

B. Summary of the Invention The present invention makes it possible to make the presenter's explanation even easier to understand by superimposing the image of the presenter giving the explanation on the video projected on the display screen in the electronic conference device. .

C. Prior Art Conventionally, in this type of electronic conference device, a predetermined cursor is displayed on the display screen of a large display device, and the presenter can move the cursor arbitrarily using a remote commander, etc. There are some that provide detailed explanations of the images shown.

In other words, the presenter moves the cursor to the part of the video displayed on the display that he or she wishes to explain, thereby making the part of the explanation clear to the audience.

Therefore, by moving their line of sight in accordance with the movement of the cursor displayed on the display, the audience can recognize which part of the video shown on the display is being explained by the presenter, and can follow the presenter's explanation. The content of the explanation is clearly understood.

D Problems to be Solved by the Invention However, the cursor that moves on the display screen is formed to be small compared to the size of the display screen, and the audience cannot predict in advance the direction in which the cursor will move. As a result, the audience's line of sight can reliably follow the movement of the cursor, which poses a problem that the audience cannot fully understand the content of the presenter's explanation and that the audience's fatigue level increases.

One possible solution to this problem is for the presenter to stand in front of the display device and point directly at the display screen.

However, according to this method, because the presenter stands blocking the display screen, the audience cannot see the part of the display screen that is blocked by the presenter, and when trying to reproduce the presentation content, The presenter must repeat the same instructions again based on the reproduced display screen,
It was still insufficient in terms of reproducing the content of the presentation.

The present invention has been made in consideration of the above points, and is an electronic conference device that can make it easier to understand the presenter's instruction part in the display image projected on the display screen, and can reproduce the content of the presentation. This is what we are trying to propose.

E Means for Solving Problem The person 18 is imaged by the imaging means 20, and the imaged image 18A is displayed on the display screen 13c and/or another display screen 15.
On A, the video is displayed superimposed on the video VDI.

By displaying the image 18A of the presenter 18 who gives a presentation based on the image superimposed on the image projected on the F-effect display screen 13C, the instruction actions of the presenter 18 can be directly viewed on the display screen 13C 115A. I can do it.

(The instruction part 18B of the presenter 18 in the displayed video
can be easily recognized.

G example An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIG. 1, reference numeral 1 indicates an electronic conference device as a whole, which includes a video source 7 consisting of a computer 3, an optical disk device 4, a video tape recorder (VTR) 5, a video memory 6 for storing video signals from a communication line, etc. A selection circuit 8 selects a video signal VDI obtained from a desired video source, and sends it to a background color generation circuit 11 via a signal synthesis circuit 10.

The background color generation circuit 11 converts the entire displayed image into a single color, such as blue, at a rate of 1 frame for every 30 frames formed by the video signal VDI (i.e., 2 to 3 times per second). A video signal V containing the single color video is configured to switch to
D2 is sent to the projection device 13A of the rear projection type projector device 13 and other display devices 15 via the switching circuit 12.

Therefore, on the screen 13B of the projector device 13 and the display device 15, the video signal VDI from the selected desired video source 7 is configured to display the video VD2 including a single color video every predetermined number of video frames. ing.

At this time, the single color image is instantaneously displayed at a rate of 2 to 3 frames per second, so that the single color image is displayed on the display screen 13C of the screen 13B or the display screen 1 of the display device 15.
The audience 16 viewing 5A is configured not to recognize the single color video, but only to recognize the video based on the video signal VDI.

Here, the presenter 18 points to the image displayed on the screen 13B in front of the screen 13B and gives an explanation based on the image to the audience 16.

At this time, the video camera 20 configured to image the front side of the screen 13B images the presenter 18 in front of the screen 13B together with the display screen 13C of the screen 13B, and the resulting image signal 5FII is sent to the contour area extraction circuit. 22 and the fingertip position extraction circuit 23.

The contour area extraction circuit 22 extracts the screen 13 based on the clock signal SCK input from the background color generation circuit 11.
The outline extraction operation of the imaged presenter 18 is performed only while the display screen 13C of B is made into a single color by the background color generation circuit 11.

That is, when a predetermined monochromatic image is projected on the display screen 13C of the screen 13B, the contour area extraction circuit 22 captures the image of the presenter 18 and the display screen 13C by capturing the image with the video camera 20. By deleting the single color image projected on the display screen 13C (i.e., the background consisting of a single color), only the image of the presenter on the 1st, which was imaged while blocking the single color image, is used as an outline area. This is extracted and sent to the signal synthesis circuit 10 as a contour region extraction signal 5A11.

At this time, when the contour display mode switch of the remote commander 25 is turned on, the signal synthesis circuit 10 receives this instruction and synthesizes the contour region extraction signal 5AII+ with the video signal VDI, and adjusts the brightness of the video in the contour region. By changing the screen 13B as shown in FIG.
The presenter's image 18A is superimposed as a thin shadow on the video from the video source 7 projected on the display screen 13C of the display device 15 and the display screen 15A of the display device 15.

On the other hand, the fingertip position extraction circuit 23 determines whether the display screen 13C of the screen 13B corresponds to the background color generation circuit 11 based on the clock signal SCK input from the background color generation circuit 11.
video camera 2 only while it becomes a single color due to
An operation is performed to extract an image 18B of a finger pointing at the image of the presenter 18 on the screen surface captured by 0.

That is, when a predetermined single-color image is displayed on the display screen 13c of the screen 13B, the fingertip position extraction circuit 23 extracts the thinnest part of the image 18A of the presenter 18 obtained by capturing the image. The paint circuit 27 extracts this and determines that it is the fingertip of the presenter 18 pointing at the screen 13B, and uses this as the coordinate data SD on the screen.
Send to.

Based on the input coordinate data SD, the paint circuit 27 paints the display screen 1 specified by the coordinate data SD.
A paint signal S is generated to display a mark 28 (FIG. 2) of a predetermined size and color in the digit 1 above 3C and 15A, and is sent to the subsequent signal synthesis circuit 10.

At this time, when the paint mode switch of the remote commander 25 is turned on, the signal synthesis circuit 10 receives this instruction and synthesizes the paint signal S with the video signal VDI, so that the presenter 18 can control the screen 13B with a fingertip. A predetermined mark 28 is displayed at a position pointing to the display screen 13C and a corresponding position on the display screen 15A of the display device 15.

At this time, the presenter 18 also presses the display screen 13 with the movement mode switch of the remote commander 25 turned on.
When the finger pointing at C is moved, the mark 28 moves on the movement trajectory of the finger (mark trajectory) 28A (Fig. 2).
is displayed.

Therefore, the presenter 18 can use the display screens 13C and 1 as necessary.
Mark 28 and mark locus 28A at any position on 5A
can be displayed.

In addition, the presenter 18 turns on the erase switch corresponding to each display mode of the remote commander 25 to erase the image 18A, mark 28, and mark locus 28A of the presenter 18 projected on the display screens 13C and 15A, respectively. It can be erased depending on the situation.

Here, the contour area extraction signal S- sent out from the contour area extraction circuit 22 and the paint signal S sent out from the paint circuit 27 are inputted together with the video signal VDI to a recording/reproducing device 29 consisting of a video tape recorder (VTR). , to be recorded.

Therefore, the recording/reproducing device 29 reproduces the recorded signals consisting of the video signal VD1, the contour area extraction signal SAR, and the paint signal S as necessary, thereby displaying the display screen 13C of the screen 13B and the display screen 15 of the display device 15.
The presentation state by the presenter 18 can be reproduced on A.

In addition, when the presenter 18 is giving a presentation in front of another background whose entire surface is a single color, for example, the presenter 18 can change the background changeover switch of the remote commander 25 to change the switching circuit 12. As a result, a video signal obtained by combining the image of the presenter 18 captured by the video camera 20 with the video signal VDI is sent to the projector device 13 and the display device 15 without passing through the background color generation circuit 11. This allows the display screen 13c of the screen 13B and the display screen 15 of the display device 15 to be displayed without instantaneously switching the video from the video source 7 to a single color video.
A video based on the video signal VDI and an image 18A of the presenter 18 synthesized thereon can be displayed in a superimposed manner.

In the above configuration, the presenter 18 explains the video while pointing to the video displayed on the display screen 13C of the screen 13B in front of the screen 13B.

At this time, when the presenter 18 turns on the outline display mode switch of the remote commander 25, the image of the presenter 18 captured by the video camera 20 is displayed as a light shadow on the display screen 13C of the screen 13B and the display screen of the display device 15. It can be projected over the image on 15A.

Therefore, on the display screen 13C or 15A, the audience 16 can simultaneously see the video from the projected video source and the image 18A of the presenter 18 (FIG. 2) projected over it, and thereby While listening to the explanation by presenter 18, audience 16 can see the movements of presenter 18 in image 18A.
The movement can be directly captured on the display screen 13C or 15A.

In this way, the audience 16 can easily recognize what the presenter 18 is explaining while looking at the display screen 13C or 15A.

Furthermore, on the display screens 13C and 15A, the image 18A of the presenter 18 is projected as a thin shadow by slightly lowering the brightness of the displayed image in this part, so that the image from the video source is not visible to the audience 16 in this part. The video is displayed at a perceivable level of brightness, so that the audience 16 can see the video without it being completely hidden by the image 18A of the presenter 18.

Therefore, the audience 16 can always see the video from the video source over the entire screen regardless of the movement of the presenter 18.

Furthermore, by turning on the outline display mode switch of the presenter 18 and the remote commander 25 and turning on the paint mode switch, the display screens 13C and 1
Image 18A of presenter 18 projected on 5A (Figure 2)
Among them, the presenter 18 is actually on the screen (13C)
A predetermined mark 28 can be displayed on the part 18B of the finger pointing.

Therefore, on the display screen 13C or 15A, the audience 16 can see the position of the presenter's 18 finger pointing at the screen surface as part of the image 18A of the presenter 18, and thereby Even in cases where the indicated position of the presenter 18 moves frequently, the audience 16 can change the indicated position according to the presenter's 18 movements (
In other words, the position indicated by the presenter 18 can be easily recognized by the movement of the image 18A).

Therefore, the audience 16 can more easily understand the presenter's explanation of the day.

Furthermore, when the presenter 18 turns on the movement mode switch of the remote commander 25, the movement trajectory of the designated position on the screen surface (that is, the mark trajectory 28A) is displayed, so that the audience 16 can see that the presenter 18 can see the displayed image. The lines or areas intended to be shown above can be easily recognized.

Furthermore, the recording and reproducing device 29 reproduces the presentation content of the presenter 18 on the display screen 13C of the screen 13 and the display screen 15A of the display device 15 with the image 18A of the presenter 18 superimposed on the image of the video source. , it is possible to reproduce the movement of the image 18A of the presenter 18 explaining this based on the video of the video source 7.

Therefore, the presenter 18 can reproduce the presentation without having to perform the same instruction action again based on the reproduced video.

According to the above configuration, by combining and processing the video from the video source 7 and the image 18A of the presenter 18, the image 18A of the presenter 18 explaining this and the instruction portion 28 are displayed on the video screen from the video source 7. .28A can be displayed in an overlapping manner, so that the audience 16 can see the entire video screen from the video source 7 and the image 18A of the presenter 18 at the same time.

In this way, the audience 16 can easily recognize the position on the video screen where the presenter 18 is explaining, thereby making it easier to understand the content of the presenter's 18 explanation.

Moreover, the presentation state can be reproduced as needed, and the usability can be greatly improved.

Incidentally, by superimposing the image 18A of the presenter 8 on the video of the video source 7 independently, it is possible to prevent the video signal VDI of the video source 7 from changing, and the video signal VDI of the video source 7 can be superimposed on the video of the video source 7 as necessary. It is possible to display only images of

In the above embodiment, the display screen 13C of the screen 13B and the display screen 15A of the display device 15
Image 18 of presenter 18 is shown on the video screen from video source 7 above.
If only A is displayed overlappingly, or the image 18 of the presenter 18
Although the case has been described in which A, the mark 28 of the designated portion, and the mark locus 28A are displayed simultaneously in an overlapping manner, the present invention is not limited to this, and the present invention is not limited to this, and may display only the mark 28 and/or the mark locus 28A of the designated portion in a superimposed manner on the video screen. You may also do this.

In this case, only the paint mode switch and/or movement mode switch of the presenter 18 and the remote commander 25 may be turned on.

Further, in the above embodiment, the display screens 13C and 15
Although the case has been described in which the entire image 18A of the presenter 18 is displayed as a thin shadow image on A, the present invention is not limited to this, and only the outline of the presenter 18 may be displayed as a line.

Further, in the above-described embodiment, a case was described in which the presenter 18 directly points on the screen surface, but the present invention is not limited to this, and the presenter 18 holds a pointer stick and points at the screen surface with the pointer stick, for example. You can do it like this.

Further, in the above-described embodiment, a case has been described in which the single color screen displayed in the background color generation circuit 11 is blue, but the present invention is not limited to this, and any color may be used as long as it is different from the color of the presenter 18. .

In the above-described embodiment, the video from the video source 7 and the image 18A of the presenter 18 are projected on both the display screen 13C of the screen 13B that the presenter 18 points directly to and the display screen 15A of the display device 15. However, the present invention is not limited to this, and the display screen 13C
Alternatively, it may be displayed on either one of 15A.

Further, in the above-described embodiment, a case has been described in which the video camera 20 is used as a means to image the presenter 18, but the present invention is not limited to this, and various other image capturing means such as an electronic camera may be applied. obtain.

Further, in the above-described embodiment, a case has been described in which a VTR is used as the recording/reproducing device 29, but the present invention is not limited to this, and various other recording/reproducing means such as a disk device can be used.

Further, in the above embodiment, the video source 7 is displayed on the display screen.
We have described the case where the image 18A of the presenter 18 is displayed superimposed on the video screen by
Various information such as the name of 8 may be displayed.

Furthermore, in the above-described embodiment, a case was described in which the image 18A of one presenter 18 was displayed on the display screen, but
The number of presenters is not limited to this, and a plurality of presenters can also be displayed on the display screen.

In this case, the images of each presenter may be color-coded.

H Effects of the Invention As described above, according to the present invention, an image from a video source is displayed on the display screen, and an image of the presenter giving an explanation based on the image is captured by the imaging means, so that an image of the presenter is captured. By displaying on the display screen superimposed on the video from the video source, it is possible to realize an electronic conference device that can explain the video on the display screen more easily.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the electronic conference device according to the present invention, and FIG. 2 is a route map showing its display screen. 1... Electronic conference device, 7... Video source, 10... Signal synthesis circuit, 11...
Background color generation circuit, 13... Projector device,
1.3 B・・・Screen, 13C115A・
... Display screen, 15 ... Display device, 16 ... Audience, 18 ... Presenter, 18A ... Image, 20 ... ...Video camera, 22...Contour area extraction circuit, 23...
...Fingertip position extraction circuit, 25...Remote commander, 27...Paint circuit, 28...
...Mark, 28A...Mark locus, 29...
...Recording and reproducing circuit.

Claims (1)

[Claims] In an electronic conference device in which a presenter gives a predetermined explanation based on an image projected on a display screen, an image of the presenter is captured by an imaging means, and the captured image is displayed on the display screen. An electronic conference device characterized in that the video is displayed superimposed on the video above and/or on another display screen.