KR890001384A - Method and device for evaluating motion vectors - Google Patents

Abstract

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Description

Method and device for evaluating motion vectors

Since this is an open matter, no full text was included.

1 is a schematic block diagram of a television system converter.

2 is a block diagram of the television type converter of FIG.

3 is a block diagram of the television type converter of FIG.

Claims (25)

In a television image using a digital signal representing an image, a motion vector evaluation method performs an operation in the image at a point apart from a predetermined number of pixels vertically and a predetermined number of pixels horizontally by a block matching technique to drive the motion vector. And determining a subpixel offset indicating a motion between image fields that are not equal to the integral product of the intervals between the pixels to define a selection of motion vectors. 2. The method of claim 1 wherein each subpixel offset is determined for horizontal and vertical motion. The evaluation method according to claim 1, wherein the motion vector leaking step includes continuous definition of motion vectors. 4. The method of claim 3, wherein the block matching technique comprises the steps of testing a minimum difference at three positions, i.e., the central position of the block, the predetermined number of samples on the left, the same predetermined number of samples on the right, and Starting from said position to test a minimum difference at nine positions symmetrically distributed about starting a smaller predetermined number of positions, and symmetrically with respect to initiating a smaller predetermined number of positions of a sample or line. Starting from said position to test the minimum difference at the dispensed nine positions, and starting to test the minimum difference at the nine positions distributed symmetrically with respect to initiating a still smaller predetermined number of positions of the sample or line. Evaluating from a location. 5. The difference according to claim 4, wherein the difference generated at the final position indicated by the final step for the upper and lower differences is adjusted to adjust the horizontal vector value and the vertical difference to adjust the horizontal vector value following the final step of the fourth term. Evaluation method comprising the step of doing. In a television image using a digital signal for displaying an image, the motion vector evaluator determines the motion in the image at a point separated by a predetermined number of vertical pixels and a predetermined number of horizontal pixels by a block matching technique. And means for determining the subpixel offset indicating the motion between the means for exiting and the field of the image that is not equal to the integral product of the interval between the pixels to limit the selection of the motion vector. 7. An evaluation apparatus according to claim 6, wherein said limiting means determines the subpixel offset for horizontal and vertical motions. 7. The method according to claim 6, wherein the motion vector outflow means determines the motion in the image at a point apart from the predetermined number of vertical samples and the predetermined number of horizontal samples by the continuous limiting of the obtained motion vector evaluation and the block matching technique. An evaluation method comprising a vector calculator and a vector filter. 9. The apparatus of claim 8, wherein the vector calculator is configured to perform a next step on a digital signal representing the image by being applied to the vector calculator by a vector filter, the predetermined number of samples on the left and the predetermined number of samples on the right; Testing the minimum difference at each of the three positions, the central position of the block, and testing the minimum difference at nine positions distributed symmetrically to the indicated position in the small predetermined number of steps of the sample or line. Starting from said position to test a minimum difference at 9 positions symmetrically distributed with respect to the indicated position in a less predetermined number of steps of samples or lines, and in a smaller predetermined number of steps of samples or lines Starting from said position to test a minimum difference at 9 positions symmetrically distributed with respect to the indicated position And initiating at said position to test for a minimum difference at 9 positions symmetrically distributed with respect to said starting point in a step of a sample or line. 10. The final display as claimed in claim 9, wherein following the final step of claim 9, the final difference indicated by the final step has two differences on the left and right sides to adjust the horizontal vector value and two differences on the upper and lower sides to adjust the vertical vector value. Evaluating the difference generated at the position. 7. The apparatus according to claim 6, further comprising: means for analyzing the operation between successive fields of a television input signal of one television system, means for arranging the fields to effectively reproduce a still image, and converting by using the still image to perform another conversion. A television system converter comprising means for obtaining a predetermined television output signal of a television system. 12. The television set according to claim 11, wherein said converting means has an interpolator for vertical / temporal interpolation, and said television input signal is supplied to said interpolator via a timebase corrector for generating a television signal of 586 lines of 60 fields. Type converter. 13. The television of claim 12 wherein the television input signal is a 625 line 50 field signal, the timebase corrector is a four field timebase corrector, and the output of the timebase corrector is fed to the interpolator via a four field shift register. Type converter. 13. The television of claim 12 wherein the television input signal is a 525 line 60 field signal, the timebase corrector is a four field timebase corrector, and the output of the timebase corrector is fed to the interpolator via a four field shift register. Type converter. 12. The method of claim 11, wherein the field arranging means changes the address of the variable delay element so that each pixel of the screen is arranged on the nearest line or sample, and each pixel of the screen is vertical and horizontal to the single line and the single sample, respectively. Television-type converters that operate to be deployed. 16. The television set of claim 15 wherein the vertical placement for the single line is performed by a vertical interpolator with four tabs per field and the horizontal placement for the single sample is performed by a horizontal filter with two or four tabs. Type converter. A television type converter for converting a 625 line 50 field into a 525 line 60, comprising: a 4-field timebase corrector for receiving a 625 line 50 field digital television input signal, and connected to an output of the timebase corrector to operate the television input signal. And a shift register connected to the output of the timebase calibrator, a sample obtained from the shift register, and screen motion data obtained from the motion analyzer. And an interpolator for generating a sample, and a two-field timebase corrector for combining the generated samples to form the television output signal. 18. The television system according to claim 17, wherein said four-field timebase corrector generates a 585 line 60 field television signal from said television input signal and supplies it to said shift register. A television type converter for converting 525-line 60 fields into 625-line 50 fields, the two-field timebase corrector receiving a digital television input signal of 525 line 60 fields and connected to the output of the timebase corrector to operate the television input signal. A digital television output signal of a predetermined 625-line 50 field on the basis of a motion analyzer which analyzes a signal, a shift register connected to the output of the timebase corrector, a sample obtained from the sp register, and screen motion data obtained from the motion analyzer. And a four-field timebase corrector that combines the generated samples to form the television output signal. 20. The television type converter according to claim 19, wherein said two-field timebase corrector generates a 585 line 60 field television signal from said television input signal and supplies it to said shift register. 19. The apparatus of claim 18, wherein the motion analyzer generates a motion vector according to motions between successive corresponding pixels of the television input signal, supplies the motion vector to the interpolator, and effectively arranges pixels of the continuous field to generate a still picture. Television system converter to reproduce. 21. The system of claim 20, wherein the motion analyzer comprises: an input circuit for receiving the television, a motion analyzer for analyzing the operation of the digital television input signal, a shift register for holding another field of the television input signal, and a sound shift register; An interpolator for generating a sample of a predetermined slow motion digital television output signal according to the obtained sample, the screen motion data generated by the motion analyzer, and the degree of slow motion; and combining the generated samples to produce a slow motion television output signal. A slow motion processor having a two-field timebase corrector. A slow motion processor, comprising: an input circuit for receiving a digital television input signal, a motion analyzer for analyzing the operation of the digital television input signal, a shift register for holding another field of the television input signal, and a sample obtained from the shift register And an interpolator for generating a sample of a predetermined slow motion digital television output signal according to the screen motion data generated by the motion analyzer and the degree of slow motion, and combining the generated samples to form a slow motion television output signal. Slow motion processor with two-field timebase corrector. 24. The slow motion processor according to claim 23, wherein said input circuit includes a four field timebase corrector. 25. The slow motion processor of claim 24, wherein the four-field timebase corrector generates 585 lines of 60 fields per second television signal from the television input signal and supplies the television signal to the shift register. ※ Note: The disclosure is based on the initial application.