JPS6386691A - How to present a 3D inset composite image - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of fitting a stereoscopic screen through a boundary area of a predetermined width.

More specifically, the present invention relates to a method suitable for performing inlay synthesis of stereoscopic television images.

[Summary of the Invention] The present invention relates to a method for presenting a stereoscopic inset composite image, in which, when a stereoscopic screen is embedded through a boundary area of a predetermined width, the stereoscopic parallax of each adjacent screen is measured through the boundary area. By setting the stereoscopic parallax in the boundary area to match the stereoscopic parallax, the embedding of stereoscopic images with different depth differences is smoothly performed, and an effective visual effect can be obtained. be.

[Prior Art j] Various techniques have been established as so-called wiping techniques for fitting flat screens.

On the other hand, the technology for embedding stereoscopic television images has not yet been established. If this were to be achieved using conventional technology, it would be possible to synthesize three-dimensional television signals of two or more channels by, for example, preparing wipe synthesis circuits for the left image and the right image, respectively.

(Problems to be Solved by the Invention) When 3D television images are wiped together using the conventional technology, when the sense of depth (execution amount) of each 3D television image to be combined is different, the boundary where wipe compositing was performed is The amount of depth becomes discontinuous in the area.As a result, there is a disadvantage in that a significant sense of strangeness occurs visually.

[Object of the Invention] In view of the above-mentioned points, the object of the present invention is to provide a visually natural,
It is an object of the present invention to provide a method for presenting a three-dimensional inset composite image that is also visually effective.

[Means for Solving the Problems 1] In order to achieve this object, in the present invention, when fitting a stereoscopic screen through a boundary area of a predetermined width, the stereoscopic parallax of adjacent screens is reduced through the boundary area. The stereoscopic parallax in the boundary area is set to match the stereoscopic parallax.

[Example] Hereinafter, the present invention will be described in detail based on Examples.

FIG. 1 shows an embodiment of a three-dimensional television image wiping device that has not yet been invented. In this figure, 2 is an input selection circuit, 4 is a video switch for embedding a stereoscopic image, and 6A
-6N is an image extracting section that extracts images around the boundary area, and 8 is a wipe key generating section that sends out a "fit" position designation signal (wipe key signal) 51 and a boundary area setting signal S2. Further, reference numeral 10 is a knob for setting the size of the "fitted" image (wipe amount), and this knob may be held at a fixed position when simply fitting two or more screens. 12 is a knob for setting the width of a border area provided around the image to be fitted.

+4A-14N is a parallax calculation unit that calculates stereo parallax by introducing the left image signal R and the right image signal R. This stereoscopic parallax corresponds to the time difference between the left image signal R and the right image signal R, so in this embodiment, the shift amount (time difference) necessary to bring these two signals closest to each other is used. It has stereoscopic parallax.

Reference numeral 16 denotes a boundary area designation signal generation unit, which sends out a signal S3 for switching and designating the video signal and the boundary area signal in accordance with the scanning position of the video signal to be displayed.

Reference numeral 18 denotes a boundary area interpolation color generation unit, which continuously changes the color of the boundary area. This causes the color of the embedded image to change continuously. On the other hand, 20 is a boundary area primary color generation unit, which unifies the color of the boundary area to a predetermined primary color. 22 is
These are knobs for setting color and density.

Next, the operation of this embodiment will be explained.

The manual selection circuit 2 selects two or more sets of No. 43 to be combined from n sets (n is an integer) of L-R signals (left and right camera No. 3). The selected signal is input to the video switch 4, and the image sampling units 6A to 6N are input for each channel.
is man-powered.

The wipe key generating section 8 sends out a fitting position designation signal (wipe key signal) Sl and a boundary area setting signal S2 corresponding to a wipe pattern such as a so-called round wipe, square wipe, or vertical wipe.

The image extraction units 6A to 6N extract signals near the boundary area of each channel video signal (that is, only the amount necessary and sufficient for calculating parallax 2, which will be described later) in accordance with the instructions of the wipe key signal SL and the boundary area setting signal S2. . The extracted video signals are sent to parallax calculation units 14A to 14N, and the parallax (i.e., depth) between the left and right images is calculated.

Boundary area designation f3 total generation 16 generates a boundary area designation signal S3 based on the determined parallax and boundary area setting signal S2. At this time, the width of the border area can be arbitrarily set using the border width setting knob 12. Further, when the fitting size setting (wipe amount setting) knob 10 is set to the right end or left end, only one video signal is selected.

The output signals of the image extracting units 6A to 6N are also sent to a boundary area interpolation color generating unit 18, and a color that continuously changes within the boundary area is determined.

The video switch 4 performs inset synthesis of stereoscopic video signals of two or more channels based on the wipe key signal Sl and the boundary area designation signal S3. At this time, any primary color or an interpolation color between images to be embedded and synthesized can be selected as the boundary area color.

Next, a specific example of image inset will be explained using FIG. 2. The cutout is a specific example of fitting one of two channels of stereoscopic images into a rectangle. In this example, it is assumed that channel 1 contains many near-view images, and channel 2 contains many distant-view images.

The block diagram shown in FIG. 3 is an example of calculating the stereoscopic parallax of a certain channel. Therefore, in reality,
This entire block shown is required for N channels.

First, the image extracting section 6A extracts the L-R video signals near the boundary area to be subjected to inset synthesis. These extracted signals are converted into digital signals by A/D converters 30.32 and stored in video RAM 34.3.
6 is stored.

In general, the shift between the left and right images represented by a stereoscopic television signal can be approximated as a shift in the horizontal direction, similar to the shift between the left and right eye images when viewed with both human eyes. Therefore, by shifting the horizontal readout address of the other signal (here, right) with respect to one signal (here, left) as a reference and inputting the read data to the digital comparator 38, the difference is minimized. The amount of change in address can be found.

This address change amount corresponds to the stereoscopic parallax (depth amount) between the left and right images.

The timing diagram shown in FIG. 4 shows a specific example in which a boundary area is inserted based on the stereoscopic parallax obtained in this manner.

Here, the left end of the boundary area corresponds to the stereoscopic parallax of channel 1, and the right end corresponds to the channel 2 parallax. The calculation of the stereoscopic parallax and the generation of the boundary area designation signal S3 are as follows:
This is repeated for each scan line.

As for the color on the border area, as mentioned earlier, it is possible to provide the interpolated colors of channel 1 and channel 2 by interpolating them according to the position in the border area, or to select and provide the desired primary color. It is. For example, in the case of linear interpolation, the signal representing the interpolation color is sent out from the boundary area interpolation color generating section 18 according to the principle shown in FIG. Further, a signal representing a desired primary color is sent from the boundary area primary color generating section 20.

As described above, it is possible to visually smoothly fit and synthesize images of two or more channels having different depth differences.

Note that the principle of interpolation color generation shown in FIG. 5 is an example of RGBI filling, and other examples include YC,
C, processing, YTQ processing.

It is also possible to perform Y-R-Y-G-Y IA filling.

[Effects of the Invention] By implementing the present invention, the following effects can be obtained.

When combining the 3D television image formed by the left and right signals with other 3D television images,
Since a boundary area can be provided based on the stereoscopic parallax (that is, the difference in perspective) of images, it is possible to smoothly synthesize stereoscopic images.

As a result, it becomes possible to immediately perform the inset synthesis of such three-dimensional images without requiring the trouble of cutting and trying while separately reproducing the recorded left and right image signals. This greatly improves production efficiency when producing 3D television programs, and also makes it possible to support 3D live broadcasts.

[Brief explanation of the drawing]

Figure 1 is a block diagram explaining an embodiment of the present invention, Figure 2 is a diagram explaining embedding synthesis of stereoscopic images, Figure 3 is a block diagram showing the process of calculating stereoscopic parallax, and Figure 4 is a block diagram explaining an embodiment of the present invention. FIG. 5 is a waveform diagram showing an example of Video No. 42 that has been synthesized by inset. FIG. 5 is a diagram showing the principle of coloring the boundary area with an interpolation color. 2...Manual operation circuit, 4...Video switch I, 6A to 6N...Both image extraction section, 8.--Wipe key generation section, 14A-14N...Parallax calculation section, 16.. - Boundary area designation signal generation unit, I8... Boundary area interpolation color generation unit, 20... Boundary area primary color generation unit.

Claims (1)

[Claims] When fitting a stereoscopic screen through a boundary area of a predetermined width, the stereoscopic parallax of each adjacent screen is measured through the boundary area, and the stereoscopic parallax in the boundary area is set to match the stereoscopic parallax. A method for presenting a three-dimensional inset composite image.