JP2951195B2 - Method for generating 3D image from 2D image - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for generating a three-dimensional video from a two-dimensional video output from a VTR or a video camera or the like or transmitted by CATV or TV broadcasting.

[0002]

2. Description of the Related Art Most of the three-dimensional video software used in a two-dimensional display system, which has recently become a hot topic, is specially created for a three-dimensional display system, and generally uses two cameras. Capture the right-eye video and left-eye video,
These captured and recorded images are superimposed and displayed almost simultaneously on a single display, and the double-viewed right-eye image and left-eye image are made to enter the respective eyes of the viewer, This allows the viewer to recognize a three-dimensional image.

[0003] However, there are a lot of video software created in two dimensions in the world, and if these two-dimensional software can be converted into three dimensions, the labor, time and cost for newly producing three-dimensional dedicated video software can be reduced. You can do it.

[0004] By the way, conventionally, when a two-dimensional image is converted into a three-dimensional image, a method of converting the recorded two-dimensional image by a frame delay is known. This is because the original two-dimensional image is, for example, a left-eye image, and if a right-eye image having a frame-delayed image with respect to the left-eye image is created, a disparity between the two images is generated. It is known that if images are displayed on a screen substantially simultaneously, it is possible to project three-dimensional image software of the same degree as the left and right images captured by the two cameras described above.

[0005]

However, in the above-described method of generating a three-dimensional image from a two-dimensional image by the frame shifting method, when a video is shifted from a currently displayed video scene to a completely different scene, the frame is delayed. In the video for the right eye that was moved to the next scene,
In the case of the left-eye image, the image of the previous scene remains as it is, and a phenomenon that the two images do not match on the screen occurs.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the related art, and has as its object to minimize mismatching between left and right eye images at scene breaks.

[0007]

According to the present invention, an image for one eye is created from an original two-dimensional image, and the image for the other eye is delayed by a predetermined number of frames from the image for the one eye. Or a 3D image generated from a 2D image created by an advanced frame, wherein a scene is constituted by a series of highly relevant frames, and at a break of each scene, the scene for the other eye is formed. The video is a still video by repeating the image of the same frame.

[0008] The image for the other eye may be the still image before and after the break, and the break in the scene may be a scene of a three-dimensional image and a scene of the three-dimensional image. Between the scenes of the two-dimensional image and the scene of the three-dimensional image.

[0009]

According to the above arrangement, at the transition from a two-dimensional video to a three-dimensional video, or at the transition from a certain three-dimensional video scene to another three-dimensional video scene, a video that does not cause discomfort to the viewer is projected. Becomes possible.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for generating a three-dimensional image from a two-dimensional image according to the present invention will be described in detail with reference to the drawings.

[Case between 3D Video and 3D Video] FIGS. 1 and 2 show frame correspondence diagrams in the case of a break between a scene A of a 3D video and a scene B of a 3D video. FIG.
FIG. 2 shows a case where the right-eye image is ahead of the left-eye image by four frames, and FIG. 2 shows a case where the right-eye image is behind the left-eye image by four frames.

First, in FIG. 1, in order to make the background moving to the right in the horizontal direction be retracted deeper than the screen, in the scene A, the images for the left eye at the same time are: frames 5, 6, 7, 8,.
9 and 10, while the right-eye image is displayed on the left-eye image frame 5, the image of the frame 9 which is four frames ahead of the left-eye image image is displayed, but from the next frame 6 on the left-eye image. The frame 10 is repeatedly displayed as the right-eye image up to the frame 10 of the scene break. During this time, the still image is displayed as the right-eye image.

In the scene B, the left-eye image is projected in the order of frames 11 to 15..., And the right-eye image is projected in the order of frames 15 to 19. It is.

Next, in FIG. 2, in order to retract the background moving left in the horizontal direction to the back of the screen, in the scene A, the left-eye image is displayed at the same time as frames 7, 8, 9, and 10.
While the right-eye image is frame 3,
4, 5, 6, and the frame difference -4 is displayed.

On the other hand, in the scene B, the left-eye video is displayed as 11, 12, 13, 14, and 15 from the scene break, whereas the right-eye video is displayed with the frame 11 continuously and repeatedly. And the video for the left eye is frame 16.
.., The image for the right eye is projected as frame 12.

As described above, a still image of the right-eye image is displayed before or after the scene break depending on the moving direction of the object to be popped out at the scene break between the three-dimensional image and the three-dimensional image.

[Case of 2D Video and 3D Video Break] FIG. 3 shows a frame correspondence diagram in the case of a 3D video scene A and a 2D video scene B break. Scene A in FIG. 3 shows a case where the right-eye image is ahead of the left-eye image by four frames.

First, in FIG. 3, in order to make the background moving to the right in the horizontal direction be retracted deeper than the screen, in the scene A, the images for the left eye at the same time are: frames 5, 6, 7, 8,
9 and 10, while the right-eye image is displayed on the left-eye image frame 5, the image of the frame 9 which is four frames ahead of the left-eye image image is displayed, but from the next frame 6 on the left-eye image. The frame 10 for the right-eye image is repeatedly displayed up to the frame 10 of the scene break. During this time, the right-eye image is a still image.

In the scene B, the left-eye image is projected in the order of frames 11 to 15..., And the right-eye image is also projected in the order of frames 11 to 15. And a two-dimensional image is obtained.

FIG. 4 shows a frame correspondence diagram in the case of a break between a scene A of a two-dimensional image and a scene B of a three-dimensional image. Scene B in FIG. 4 shows a case where the right-eye video is delayed by four frames with respect to the left-eye video.

First, in the scene A, the image for the left eye is projected in the order of frames... 5 to 10, and the image for the right eye is also displayed in the order of frames.
And a two-dimensional image is obtained.

Next, in order to make the background moving to the left in the horizontal direction retreat from the screen, in the scene B, the images for the left eye are displayed at the same time as frames 11, 12, 13, 14, 1
.. Are displayed as 5, 16,..., Whereas in the right-eye image, the frame 11 is continuously and repeatedly displayed. When the left-eye image becomes frame 16..., The right-eye image is displayed as frame 12.

As described above, a still image of a right-eye image is displayed before or after a scene break between a two-dimensional image and a three-dimensional image, depending on the moving direction of an object to be popped out.

FIG. 5 is a block diagram showing a hardware configuration for realizing the method according to each of the above embodiments. The original two-dimensional image input in FIG. 9 enters the switch SW as it is, and becomes a left-eye video signal.

The original two-dimensional image is taken into the frame memory FM, and the image data of the frame delayed (advanced) by a predetermined frame by the data of the frame shift amount of the central processing unit CPU is input to the switch SW. . In this case the need to project a repeated break on the same frame of the scene, the same frame from the meantime the frame memory FM by the memory control circuit MC is repeatedly selected.

Each data input to the switch SW is switched and output by the switch SW, and a desired left-eye video signal and right-eye video signal are obtained.

[0027]

As described above, according to the present invention, a still image is used as a still image at a scene break between a two-dimensional image and a three-dimensional image or between three-dimensional images. It is possible to prevent an unnatural three-dimensional image or a two-dimensional image from being projected into a frame that constitutes one scene without being mixed with a frame of another scene, and it is possible to expect an effect that an image that is easy on the eyes of the viewer is always projected from the screen.

[Brief description of the drawings]

FIG. 1 is a diagram showing frame correspondence (frame difference 4) before and after a scene break between three-dimensional images.

FIG. 2 is a diagram showing frame correspondence (frame difference-4) before and after a scene break between three-dimensional images.

FIG. 3 is a diagram showing frame correspondence (frame difference 4) before and after a scene break between a three-dimensional video and a two-dimensional video.

FIG. 4 is a diagram showing frame correspondence (frame difference-4) before and after a scene break between a two-dimensional video and a three-dimensional video.

FIG. 5 is a simplified block diagram of a hardware configuration for realizing the method of the present invention.

Claims (4)

(57) [Claims] An image for one eye is created from an original two-dimensional image, and an image for the other eye is created by a frame delayed or advanced by a predetermined number of frames from the one eye. A method of generating a three-dimensional image from a two-dimensional image, wherein a scene is composed of a series of highly relevant frames, and at the break of each scene, the image for the other eye is converted into an image of the same frame. 2. The method of generating a three-dimensional image from a two-dimensional image according to claim 1, wherein a still image is obtained by repeating the above. 2. The method for generating a three-dimensional image from a two-dimensional image according to claim 1, wherein the image for the other eye is used as the still image before and after the cut. 3. The scene break is a break between a scene of a three-dimensional image and a scene of a three-dimensional image.
Or a method for generating a three-dimensional image from the two-dimensional image according to 2. 4. The break between the scenes is a break between a scene of a two-dimensional image and a scene of a three-dimensional image.
Or a method for generating a three-dimensional image from the two-dimensional image according to 2.