SU1192168A1 - Method and apparatus for generating and reproducing television signal of pseudostereoscopic picture - Google Patents

Description

The invention relates to the field of transmission of images, in particular to methods of forming and reproducing a three-dimensional image in stereoscopic color television systems, and can be used in automated complexes for collecting, storing, processing and synthesizing three-dimensional information for its subsequent volumetric perception.

The purpose of the invention is to improve the image quality.

FIG. 1 shows a block diagram of a device for generating and reproducing a television. of the pseudo-volumetric image sultry signal, FIG. 2, a method for generating and reproducing a television signal of a pseudo-volumetric image is explained.

A device for generating and reproducing a television signal of a pseudo-volumetric image contains an image sensor 1, the first

2 and the second 3 processing channels, the first register 2 - 1 shift the first processing channel, the first register 3-1 shift the second processing channel, stereo video control unit 4, · the first decoder 2-2, the second decoder 3-2, OR elements (2 3 - 2 - Ν) of the first processing channel, elements OR (3 - 3 -3 - Ν), second processing channel, elements Η (2-3-1-2-3-Ν, 2-1 - 2 - N - Ν) of the first processing channel, And elements (3-3-1 - 3- 3Ν, - 3 - Ν-1-3-ν ~ ν) of the second processing channel, second register

2-4 shifts of the first processing channel, second register 3-4 shifts of the second processing channel.

The method of forming and reproducing the TV signal of a pseudo-volumetric image is as follows (Fig. 2).

When transmitting, they convert the optical image of the object into electric 2

This signal generates a complete television signal, simultaneously scanning the object with a probe beam, receiving a reflected probe beam and converting it into an electrical signal with the subsequent formation of a parallax signal, which is stored and summed up with a full television signal.

10. by a signal, and when receiving, a parallax signal is extracted from the full television signal and a stereo pair signal is generated by delaying video signals by a time proportional to the voltage, 5, to the parallax signal line.

FIG. 2 points L and P denote respectively the left (L) and right (P) eyes of the observer. Before the eyes of the observer have

20 stereo television indicator screen available for monitoring. The effect of volumetric display, for example, point M, is achieved due to the fact that on the left screen of the indicator

25 the projection of this point is displayed at the M _l point, and at the right - at the M point. With simultaneous observation by each eye of the projection intended for it, an image of a point M located at the intersection of the observation lines of the left and right eyes, and generally outside the plane of the indicator screen, is formed in the consciousness of the observer. In the above example, it is assumed (to simplify further consideration) that all displayed points are located in behind-screen space, namely, in the area bounded by the OMVS rectangle. It also shows the direction of the axes OX and OU of the displayed space. The rectangular OMVS is a section of the displayed three-dimensional volume, made along

4 $ one of the lines of the television raster, and the line number is determined by the coordinate of the displayed volume.

The device works as follows.

in a way.

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The image sensor 1 (Fig. 1) provides line-by-line reading of image points, the line number being determined by the coordinate Ύ of the image area, and the line is read sequentially point by point along the OX axis (Fig. 2). For each of the points in the first register 2 - 1 shift of the first processing channel 2 its coordinate X is entered, · 10

In the first register 3 - 1 shift of the second processing channel 3 - coordinate 2, and the inputs of the second registers 2-4 and 3-4 receive a digital code characterizing brightness and chromaticity of 15 points. Synchronously with the operation of the image sensor 1, the rays are moved along the screens of the stereo video control unit 4.

Let the image sensor G read the information of a point located at the beginning of one of the image lines, i.e. having a x coordinate equal to zero. From the constructions in FIG. 2, it can be seen that this point is located on the cut-off OA and can have any coordinate acceptable for this device. If this coordinate for the point read is maximal and coincides with the coordinate of point A, then information about its brightness and chromaticity is displayed at the TA _x and A _{points of the} left and right screens of the stereo video control unit 4, respectively. For this, the specified information from the output of the image sensor 1 (Fig. 1) enters the right-most cells of the second shift registers (2-4, 3-4) of the left and right channels of the stereo video control unit 4. It enters these cells codes of X and координат coordinates of the scanned point recorded in the first shift registers (2 - · 1, 3 - 1). These codes are recognized by the first 2 - 2 and second 3-2 decoders, the output of which is through the corresponding elements AND and OR (2-3-2-N and 3 - 3,

3 - Ν) the required commutation is performed from the rightmost cells of the second registers (2-4 and 3-4) of the shift. It— the luminance and chrominance formation of the point is immediately transmitted to the inputs of the stereo video monitoring unit (STVKB), causing the corresponding points to be displayed, because The rays on both screens of STVKB 4 are in the leftmost position at the time of scanning the point with the X coordinate equal to zero.

I ·

If sensor 1 of the scan pattern is read, the starting point of the line with the coordinate Ζ, for example, equal to zero, i.e. point O, information about its brightness and chromaticity is displayed in points O _A and SD of the left and right screens of the stereo television indicator, respectively (Fig. 2). The points Od · and O 'lie at the intersection of the lines connecting the point O c. Dots by P (not shown). Since at the moment of scanning the point O, the rays on the STVKB screens are in the leftmost position, the arrival of information about the brightness and chromaticity of the point O to the inputs of the STVKB should be delayed by the time required for the ray to pass the Α _Λ 0 _Λ segment for the left screen, and required for the passage of the beam of the segment A _p 0 _p for the right screen. The required delay is achieved by transmitting information about the brightness and chromaticity of the point O to the cells of the second registers (2-4 and

3-4) shift.

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FIG. one

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Claims (2)

1. A method of generating and reproducing a television signal of a pseudo-volumetric image, which consists in the fact that during transmission optical images of an object are converted into an electrical signal and a complete television signal is formed, simultaneously scanning an object with a probing beam, receiving a reflected probing beam and transforming it into the electrical signal with the subsequent formation of the parallax signal, which is stored and summed with the full television signal, and when received, the parallax signal is separated from the full television signal and form a stereo pair signal, characterized in that, to improve the image quality, the stereo pair is formed by video delays by a time proportional to the magnitude of the parallax signal. 2. Device'forming and reproducing a television signal a pseudo-volumetric image containing an image sensor, the first and second outputs of which are connected to the inputs of the first and second processing channels, respectively. Each of which consists of a first shift register, as well as a stereo video control unit, characterized in that, in order to improve the image quality, each the processing channel, respectively, entered the decoder, the element OR ,, elements And and the second shift register, and to the inputs of the ί-th element OR (where 1 = = 1 - Ν) the outputs of the N elements And are connected, the first input of each of which the first processing channel is combined with the first input of the corresponding element And the second processing channel and connected to the corresponding output of the decoder of the first processing channel, the second input of each element And the first processing channel combined with the second input of the corresponding element And the second processing channel and connected to the corresponding output of the decoder of the second processing channel, the output of the ϊth element OR is connected to the corresponding input of the second register shift, the output of which is the output of the processing channel, while the output of the first and second processing channels are connected respectively to the first and second inputs of the stereo video control unit, and the clock inputs of the first and second processing channels are combined, are the clock input of the first and second shift registers and are connected to the clock sensor output image δ and, ". 1192168 1192168 in each channel of the processing, the output of the first shift register is connected to the input of the decrypt processing. one