Unit for and method of motion estimation and image...

Details Unit for and method of motion estimation and image... Unit for and method of motion estimation and image...

2005-08-02

2005-08-02

Diep, Nhon (Department: 2613)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C348S699000

Reexamination Certificate

active

06925124

ABSTRACT:
The motion estimation unit (100) comprises a block-matcher (102) for calculating a start motion vector (110) by minimizing a predetermined cost function as a matching criterion for the block (116) of pixels with a further block of pixels (122) of a further image (120). The motion estimation unit (100) further comprises an optical flow analyzer (104) for calculating an update motion vector (111) based on the start motion vector (110) and which is designed to find the most appropriate set of optical flow equations corresponding to respective pixels of the block (116) of pixels. This is achieved by analyzing gradient vectors of optical flow equations for pixels of the block (116) of pixels. Finally the selector106of the motion estimation unit (100) selects the motion vector (126) by comparing the start motion vector (110) with the update motion vector (111).

REFERENCES:
patent: 4998168 (1991-03-01), Gillard
patent: 5469850 (1995-11-01), Iizuka et al.
patent: 5471252 (1995-11-01), Iu
patent: 5496041 (1996-03-01), Broussard
patent: 5600252 (1997-02-01), Rossi
patent: 6330353 (2001-12-01), Lai et al.
patent: 6744933 (2004-06-01), Lai et al.

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