JPS63293590A - Video signal generator for stereoscopic image - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a stereoscopic image video signal generation device that obtains a stereoscopic image by alternately displaying a right viewing signal and a left viewing signal.

(Prior Art) Conventionally, in order to obtain a three-dimensional image using this type of system, a plurality of television cameras, for example, two television cameras placed at a predetermined distance, convey images of the same subject and transmit left and right video signals. obtained,
These left and right video signals obtained from each television camera are alternately switched and alternately and continuously supplied to the same television receiver to alternately display left and right images. On the other hand, the user wears liquid crystal glasses, and with these glasses, the field of view of the left and right eyes is turned on.
By turning it off, you can view the 3D image by viewing the left image with your left eye and the right image with your right eye.

However, the above-mentioned stereoscopic television system has the disadvantage that it is necessary to create a stereoscopic image by imaging the same subject using two television cameras, which takes time and effort to create. There is also a need for the development of an apparatus that can easily and quickly produce scenes that do not exist in reality, large-scale powerful scenes, and three-dimensional images such as computer-generated animations and manga.

(Problems to be Solved by the Invention) In the conventional stereoscopic television system, it is not possible to obtain a video signal that displays a stereoscopic image without actually capturing an existing subject using two television cameras. The drawback is that it takes time and effort to create scenes, animations, etc. SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks, the present invention aims to provide a video signal generation device for stereoscopic images that can generate a video signal that projects a stereoscopic image without using two cameras to distance-image an existing subject. The purpose is

[Structure of the Invention] (Means for Solving the Problems) The stereoscopic image video signal generation device of the present invention includes a left-viewing image signal representing a left-viewing image separately created in advance, and a left-viewing image signal representing a left-viewing image created separately in advance. right-view image output means for outputting depth information indicating depth; and right-view image output means for outputting a left-view image signal representing a left-view image prepared separately in advance and depth information indicating the depth of the left-view image. an image output means, a right image delay means for creating a right-view video signal by delaying an input left-view image signal by a time corresponding to the depth information of this signal, which is simultaneously given; and an input left-view image a left image delaying means for producing a right viewing video signal by delaying the signals in a direction opposite to the right image delaying means for a time corresponding to the depth information of the signals that are simultaneously applied; and the right viewing and right viewing video signals. The apparatus is configured to include a video synthesizing means for outputting a stereoscopic image video signal obtained by alternately switching and synthesizing signals for each field.

(Function) In the stereoscopic image video signal generation device of the present invention, the right-viewing image output means includes a left-viewing image signal representing a left-viewing image separately created in advance and depth information indicating the depth of the left-viewing image. is output to the right image delay means. The right image delay means delays the input left-view image signal by a time corresponding to the depth information of this signal, which is simultaneously applied, to create a right-view video signal and outputs this to the image synthesis means. On the other hand, the right-view image output means outputs a left-view image signal representing a left-view image prepared separately in advance and depth information indicating the depth of the left-view image to the left image delay means.

The left image delaying means delays the inputted left viewing image signal in a direction opposite to the right image delaying means by a time corresponding to the simultaneously applied depth information to create a right viewing video signal. Output to video compositing means. The video synthesis means outputs a stereoscopic image video signal obtained by alternately switching and synthesizing the right-view and right-view video signals field by field.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a stereoscopic image video signal generation device of the present invention. 1 is a left-view image signal 100
2 is a left-view image output circuit that outputs a left-view image signal 2.
3 is a variable delay line that delays the left-view image signal 100 based on the depth information voltage value 51; 4 is the left-view image signal 100 and outputs the depth information voltage 6;
1 is a variable delay line that delays based on 1; 5 is a depth information generation circuit that converts depth information into a corresponding voltage value; 6 is a right-view video signal 30 output from the variable delay lines 3 and 4;
0 and 400 are switched alternately to generate a stereoscopic image video signal 50.
7 is a synchronizing signal generating circuit that generates a switching timing signal for the switching circuit 6.

Next, the operation of this embodiment will be explained. First, right-view and left-view images are created in advance along with depth information for each image. The left-view image signal 100 is output from the left-view image output circuit 1, and the left-view image signal 200 is output from the celebratory image output circuit 2 together with image depth information 50 and 60, respectively.

The right-viewing and left-viewing image signals 100 and 200 are output to the variable delay lines 3 and 4, and the depth information 50 and 60 representing the depth of the right-viewing and left-viewing images is output to the depth information generating circuit 5. be done. The depth information generation circuit 5 receives input depth information 5.
0.60 into a corresponding voltage value of 51.61 and outputs these voltage values to the variable delay lines 3 and 4. variable delay line 3
The input viewing image signal 100 is delayed by a delay time based on the voltage value 51 corresponding to the depth of this image to form a right viewing video signal 300, which is output to the switching circuit 6. The variable delay line 4 delays the input left current image signal @2cto by a delay time based on the voltage value 61 corresponding to the depth of this image, converts it into a right viewing image signal 400, and outputs this to the switching circuit 6. do. In the switching circuit 6, the synchronizing signal generating circuit 7
Switching is performed according to the vertical index signal input from Output. This video signal 500 is a normal NTSC signal, and is a field-sequential stereoscopic image signal in which right-view and left-view image signals are switched for each field. Here, for right vision,
The operations of the variable delay lines 3 and 4 and the depth information generating circuit 5 that produce the left-view image signals 300 and 400 will be explained in more detail. The right-viewing and left-viewing image output circuits 1 and 2 output depth information of the object, that is, the image, to the depth information generating circuit 5 when the object is 1 m away or 2 m away, for example. The depth information generating circuit 5 generates a DC voltage in accordance with the input depth information, that is, in accordance with the distance to the subject, and applies this DC voltage to the variable delay line 3.4.
Output to. The variable delay lines 3 and 4 receive a given DC voltage,
In other words, Fig. 2 (A) and (B) correspond to the distance to the subject.
The right-viewing and left-viewing image signals 100 and 200 inputted with the delay time shown in FIG. At this time, when the distance to the subject is 1 m, the image signal for left vision advances by Δt1 as shown in Figure 2 (A), and on the other hand, the image signal for left vision advances as shown in Figure 2 (B). The variable delay line 34 is controlled so that the image is delayed by Δt1, and the positions of the right-viewing and left-viewing images are largely shifted left and right. On the other hand, the distance to the subject is 5m.
In this case, as shown in FIG. 2 (A>, (B)), the image signals for right and left vision are each delayed by △t2, and the gap between the two images to the left and right becomes small. Right vision and right vision video signals 300 output from delay lines 3 and 4
, 400 have characteristics similar to signals obtained by photographing the same subject with two cameras. Therefore, the video signal 500 for a stereoscopic image created by combining the signals 300 and 400 by the switching circuit 7 is displayed on a monitor or the like, and the image based on the right-view video signal 300 is displayed with the right eye, and the right-view video signal 400 is If you can observe the images with your left eye using liquid crystal shutter glasses or the like, you will be able to see impressive 3D television images.

According to this embodiment, by delaying the image signals for right vision and left vision created in advance by the variable delay lines 3 and 4 in accordance with the depth information 50.60 (voltage value 51.61>) that is given simultaneously. , right-view video signal 3, which is equivalent to the signal obtained by capturing the same subject with two television cameras.
00, 400 can be produced. For this reason, 2
Without shadowing the existing subject with the camera on the stand,
A video signal that displays a three-dimensional image can be created easily and in a short time. Therefore, a video signal for a stereoscopic image can be created easily and in a short time using the above-mentioned apparatus from images such as computer animation. In addition, it becomes possible to easily and inexpensively create and provide video signals for stereoscopic images such as stereoscopic Famicom computers, game machines, and the like.

Note that in the above embodiment, the right image and the left image were created in advance, and then the left and right positions of each image were shifted using the respective variable delay lines 3 and 4. A similar effect can be obtained by sliding the position of the visual image while drawing it.

Further, although the variable delay lines 3 and 4 of the above embodiment continuously change the delay time corresponding to the voltage value 51.61 of the depth information, it is also possible to change the delay time in stages. good.

[Effect of the Invention 1] As described above, the video signal generation device for stereoscopic images of the present invention has the effect of being able to generate a video signal that projects a stereoscopic image without shadowing an existing object using two cameras. be.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the stereoscopic image video signal generating device of the present invention, and FIG. 2 is a diagram illustrating the operation of the variable delay lines 3 and 4 shown in FIG. 1. 1... Image output circuit for left vision 2... Image output circuit for left vision 3.4... Variable delay line 5... Depth information generation circuit 6... Switching circuit 7... Synchronization signal generation Circuit agent Patent attorney Ken Ken Chika Hiroshi Uji Figure 1 Figure 2

Claims (1)

[Claims] a right-viewing image output means for outputting a right-viewing image signal representing a right-viewing image created separately in advance and depth information indicating the depth of the right-viewing image; and a right-viewing image output means representing a left-viewing image created separately in advance. a left-viewing image output means for outputting a left-viewing image signal and depth information indicating the depth of the left-viewing image; and a left-viewing image output means that outputs an input right-viewing image signal simultaneously for a time corresponding to the depth information of this signal. A right image delay means for delaying and producing a right vision video signal, and a right image delay means for delaying the input left vision image signal in a direction opposite to the right image delay means by a time corresponding to the depth information of this signal which is given at the same time. a left image delaying means for producing a left-viewing video signal, and a video synthesizing means for outputting a stereoscopic image video signal obtained by alternately switching and synthesizing the right-viewing and left-viewing video signals for each field. A video signal generation device for stereoscopic images, comprising: