JPH067691B2 - Presentation method of stereoscopic embedded image - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for fitting a stereoscopic screen through a boundary area having a predetermined width.

More specifically, the present invention relates to a method suitable for inset composition of stereoscopic television images.

[Summary of the Invention] The present invention relates to a method for presenting a stereoscopically embedded composite image, and when a stereoscopic screen is fitted through a boundary area of a predetermined width, the stereoscopic parallax of adjacent screens is measured through the boundary area. However, by setting the stereoscopic parallax in the boundary area so as to match the stereoscopic parallax, the stereoscopic images having different depth differences can be smoothly embedded and combined, and an effective visual effect can be obtained.

[Prior Art] As a technique for fitting a flat screen, various techniques have been established as so-called wiping.

On the other hand, the technology for fitting stereoscopic television images has not been established yet. If this is forcibly realized by using the conventional technique, it is conceivable to synthesize a stereoscopic television signal of two or more channels by preparing the wipe synthesizing circuits for the left image and the right image, respectively.

[Problems to be Solved by the Invention] When a stereoscopic television image is wipe-synthesized by using a conventional technique, and when the sense of depth (execution amount) of each stereoscopic television image to be synthesized is different, the boundary where the wipe synthesis is performed The depth amount becomes discontinuous in the area. As a result, there is a drawback in that a noticeable discomfort is visually generated.

[Object of the Invention] In view of the above points, the object of the present invention is visually natural,
Another object of the present invention is to provide a method of presenting a stereoscopically embedded composite image that is visually effective.

[Means for Solving the Problems] In order to achieve such an object, in the present invention, when a stereoscopic screen is fitted through a boundary area having a predetermined width, the stereoscopic parallax between adjacent screens through the boundary area is reduced. Each is measured, and the stereoscopic parallax in the boundary region is set so as to match the stereoscopic parallax.

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

FIG. 1 shows an embodiment of a stereoscopic television image wiping device to which the present invention is applied. In the figure, 2 is an input selection circuit, 4 is a video switch for stereoscopic image fitting, and 6A.
6N is an image extracting section for extracting an image around the boundary area, and 8 is a wipe key generating section for transmitting a "fit" position designating signal (eye key signal) S1 and a boundary area setting signal S2. Also, 10 is the size of the "inset" image (wiping amount)
Is a knob for setting, and when simply fitting two or more screens, this knob may be held at a fixed position. Reference numeral 12 is a knob for setting the width of the boundary area provided around the image to be fitted.

Reference numerals 14A to 14N are parallax calculation units that calculate the stereoscopic parallax by introducing the left image signal L and the right image signal R. Since this stereoscopic parallax corresponds to the temporal shift between the left image signal L and the right image signal R, in this embodiment, the shift amount (time difference) required to bring these signals L and R closest to each other. Is the stereoscopic parallax.

Reference numeral 16 denotes a boundary area designation signal generator, which outputs 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.

A boundary area interpolation generating unit 18 continuously changes the color of the boundary area. As a result, the color of the inlaid image changes continuously. On the other hand, 20 is a boundary area primary color generation part,
The color of the boundary area is unified to a predetermined primary color. Reference numeral 22 is a knob for setting color and density.

Next, the operation of this embodiment will be described.

The input selection circuit 2 selects two or more sets of signals to be combined from n sets (n is an integer) of L and R signals (left and right camera signals). The selected signal is input to the video switch 4 and also to the image extracting units 6A to 6N for each channel.

The wipe key generation unit 8 includes a fitting position designation signal (wipe key signal) S1 and a boundary area setting signal corresponding to a wipe pattern such as so-called round wipe, square wipe, and vertical wipe.
Send S2.

The image extracting units 6A to 6N extract the signals in the vicinity of the boundary region of each channel video signal (that is, only the amount necessary and sufficient to calculate the parallax amount described later) according to the instructions of the wipe key signal S1 and the boundary region setting signal S2. The extracted video signal is sent to the parallax calculation units 14A to 14N, and the parallax (that is, depth depth) between the left and right images is calculated.

The boundary area designation signal generator 16 generates a boundary area designation signal S3 based on the obtained parallax and the boundary area setting signal S2. At this time, the width of the border area is set to the border width setting knob.
It can be set arbitrarily using 12. When the fitting size setting (wiping amount setting) knob 10 is set to the right end or the left end, only one video signal is selected.

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

The video switch 4 performs inset synthesis of stereoscopic video signals of two or more channels based on the wipe key signal S1 and the boundary area designation signal S3. At this time, an arbitrary primary color or an interpolated color between images to be embedded and combined can be selected as the boundary area color.

Next, a specific example of image fitting will be described with reference to FIG. This drawing is a specific example in which one of two-channel stereoscopic images is fitted into a rectangle. In this example, it is assumed that channel 1 includes many near-view images, and channel 2 includes many distant-view images.

The block diagram shown in FIG. 3 is an embodiment for calculating the stereoscopic parallax of a certain channel. So in practice,
The entire block shown is required for N channels.

First, in the image extracting unit 6A, L / R video signals to be subjected to inset synthesis in the vicinity of the boundary area are extracted. These extracted signals are converted into digital signals by the A / D converters 30 and 32 and stored in the video RAMs 34 and 36.

In general, a shift between left and right images represented by a stereoscopic television signal can be considered as a shift in the horizontal direction, similar to a shift between left and right eye images when viewed by both eyes of a human. Therefore, the horizontal read address of the other signal (here, right) is shifted with respect to the one signal (here, left) used as a reference, and the read data is input to the digital comparator 38 to minimize the difference. Therefore, the amount of change in address can be calculated.

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 the boundary region is inserted based on the stereoscopic parallax obtained in this way.
Here, the left end of the boundary region corresponds to the stereoscopic parallax of channel 1, and the right end thereof corresponds to the parallax of channel 2. The calculation of the stereoscopic parallax and the generation of the view area designating signal S3 are repeated for each scanning line.

As for the color on the boundary area, as described above, interpolation colors of channel 1 and channel 2 may be interpolated according to the position in the boundary area, or a desired primary color may be selected and provided. It is possible. In the case of linear interpolation, for example, the signal representing the interpolation color is sent from the boundary area interpolation color generator 18 according to the principle shown in FIG. A signal representing the desired primary color is sent from the boundary area primary color generating section 20.

As described above, images of two or more channels having different depth differences can be visually fitted smoothly and combined.

The principle of interpolation color generation shown in FIG. 5 is an example in the case of RGB processing, and as another example, YC _W
C _N processing, YTQ process, we are also possible to perform Y · RY · GY process.

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

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

As a result, it is possible to instantly perform inset synthesis of such a stereoscopic image without the trouble of performing cut & try while separately reproducing the recorded left and right image signals. As a result, the production efficiency at the time of producing a stereoscopic television program is significantly improved, and it is possible to support stereoscopic live broadcasting.

[Brief description of drawings]

FIG. 1 is a block diagram for explaining an embodiment of the present invention, FIG. 2 is a diagram for explaining inset synthesis of a stereoscopic image, FIG. 3 is a block diagram showing a process of calculating stereoscopic parallax, and FIG. FIG. 5 is a waveform diagram showing an example of the video signal subjected to the inset synthesis, and FIG. 5 is a diagram showing the principle in the case of coloring the boundary region with an interpolation color. 2 ... Input selection circuit, 4 ... Video switch, 6A-6N ... Image sampling section, 8 ... Wipe key generation section, 14A-14N ... Parallax calculation section, 16 ... Boundary area designation signal generation section, 18 ... Boundary area interpolation color generation section , 20 ... Border area primary color generation part.

Claims (1)

[Claims] 1. When fitting a stereoscopic screen through a boundary region having a predetermined width, the stereoscopic parallaxes of adjacent screens are measured through the boundary region, and the stereoscopic parallax in the boundary region is matched so as to match the stereoscopic parallax. A method for presenting a stereoscopically embedded composite image, characterized by setting.