Method for motion estimation

Details Method for motion estimation Method for motion estimation

2005-09-06

2005-09-06

Wong, Allen (Department: 2613)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240000, C375S240010, C375S240120

Reexamination Certificate

active

06940907

ABSTRACT:
A method for motion estimation. The method includes a) dividing a search area into sub-areas with different densities, b) deriving distortions of a currently selected macro-block and its neighbors determined by the density of the current sub-area, c) if one of the distortions of the neighbors is smallest, identifying the neighbor as the current macro-block, d) repeating steps b) and c) until the current macro-block has the smallest distortion, e) if the current macro-block having the smallest distortion is not located in the sub-area having the largest density, re-defining the search area according to the density of the current sub-area, and f) repeating steps a), b), c), d) and e) until the current macro-block having the smallest distortion is located in the sub-area having the largest density, identified as the reference macro-block.

REFERENCES:
patent: 6810081 (2004-10-01), Dantwala
patent: 6845130 (2005-01-01), Han et al.

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