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Unit for and method of motion estimation and image processing apparatus provided with such motion estimation unit

A technology of image processing equipment and estimation unit, which is applied in the field of generating motion vector and image processing equipment, can solve the problems of motion vector error, no reliable indication of motion vector accuracy, etc., and achieves the effect of improving consistency

Inactive Publication Date: 2008-04-30
ENTROPIC COMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The calculated SAD does not give a reliable indication of the accuracy of the motion vector, i.e. the motion vector error

Method used

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  • Unit for and method of motion estimation and image processing apparatus provided with such motion estimation unit
  • Unit for and method of motion estimation and image processing apparatus provided with such motion estimation unit
  • Unit for and method of motion estimation and image processing apparatus provided with such motion estimation unit

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Embodiment Construction

[0050] Corresponding reference numerals have the same meaning in all figures.

[0051] Figure 1 schematically shows an embodiment of a motion estimation unit 100, including:

[0052] generating means 102 for generating a set of candidate motion vectors for the segment 116 of the first image 118;

[0053] first summing means 106 for calculating the matching error of the candidate motion vector of the segment 116 by accumulating the absolute difference between the pixel value of the segment 116 and the pixel value of the second image 120;

[0054] second summing means 108 for calculating a variance parameter by accumulating the absolute difference between the pixel values ​​of said segment 116 and the pixel values ​​of said first image 118;

[0055] estimating means 110 for estimating a motion vector error 130 by comparing a specific matching error with the variance parameter; and

[0056] The selecting means 104 is used for selecting a specific motion vector 126 from the set ...

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Abstract

The motion estimation unit (100) comprises a first summation means (106) for calculating match errors of a number of candidate motion vectors of a segment (116) of a first image (118). The motion vector with the lowest match error can be assigned to the segment (116) as the estimated motion vector. The match error is based on summation of absolute differences between pixel values of the segment (116) and pixel values of a second image (120). In order to estimate the deviation of the estimated motion from the true motion vector, i.e. the motion vector error (130), the motion estimation unit (100) further comprises a second summation means (108) for calculating a variance parameter by summation of absolute differences between pixel values of the segment (116) and pixel values of the first image (118) and estimation means (110) for estimating a motion vector error (130) by comparing the match error with the variance parameter.

Description

technical field [0001] The invention relates to a motion estimating unit for generating motion vectors, each corresponding to a respective segment of a first image, said motion estimating unit comprising a first summing means for summing by summing the segments The absolute difference between the pixel value and the pixel value of the second image is used to calculate the matching error of the segmented motion vector. [0002] The invention also relates to a method of generating motion vectors, each corresponding to a respective segment of a first image, said method comprising a first summation step by adding the pixel values ​​of the segment and the pixels of the second image The absolute difference between the values ​​is used to calculate the matching error for the segment motion vector. [0003] The invention also relates to an image processing device comprising: [0004] a motion estimating unit for generating motion vectors, each motion vector corresponding to a respec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/26G06T7/20H04N19/51
CPCH04N7/26765H04N19/00587H04N19/00703H04N19/521H04N19/51
Inventor G·A·伦特
Owner ENTROPIC COMM INC