Method, system and apparatus for block matching based on...

Image analysis – Applications – Motion or velocity measuring

Reexamination Certificate

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C382S236000, C382S209000, C348S416100, C348S700000, C375S240160

Reexamination Certificate

active

06985604

ABSTRACT:
In block-based motion or depth estimation, a block is assigned a motion or depth value as a result of minimizing the matching error over a limited set of candidate values. The matching error for each element of the set is obtained by computing the luminosity differences between a block of a first image (10) and an area of a second image (11). It may occur that an object (12) is partially obstructed by another object (15), so that a pixel (14) in the block is not present in the corresponding area, because another pixel (16) overlaps it. The method and system according to the invention determine which pixels are not visible in the second image (11), and compute the matching error over only the visible pixels. An apparatus for adapting a video signal (40) uses the chosen candidate values to create an enhanced version of the video signal (40).

REFERENCES:
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patent: 4825393 (1989-04-01), Nishiya
patent: 4876728 (1989-10-01), Roth
patent: 5909251 (1999-06-01), Guichard et al.
patent: 6075875 (2000-06-01), Gu
patent: 6496598 (2002-12-01), Harman
patent: 6668082 (2003-12-01), Davison et al.
Yoshida et al, “Block Matching Motion estimation using Block Integration based on Reliability Metric,” 1997, IEEE, pp. 152-155.

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