Method and apparatus for motion vector detection and medium...

Details Method and apparatus for motion vector detection and medium... Method and apparatus for motion vector detection and medium...

2006-05-23

2006-05-23

Le, Vu (Department: 2613)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

Reexamination Certificate

active

07050502

ABSTRACT:
A method and apparatus for performing motion estimation under a motion estimation mode suitable for an amount of motion within each E-block detects a motion vector with a small amount of computation. A block division section divides a frame to be encoded into E-blocks of a predetermined pixel size. For each target E-block, a motion estimation mode detection section relies on a past motion vector of a predetermined block to predict an amount of motion, and determines a motion estimation mode defining a search area that enables detection of the predicted amount of motion among a plurality of predefined motion estimation modes. If the predicted amount of motion is small, a mode defining a narrow search area and a fine search resolution is selected. If the predicted amount of motion is large, a mode defining a broad search area and a coarse search resolution is selected.

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“MPEG-4 Video Verification Model Version 11.0” Touradj Ebrahimi et al., JTC1/SC29/WG11 MPEG98/N2172 Tokyo, published by ISO/IEC, pp. 1-2, pp. 39-53, Mar. 1998.
“Predictive Coding Based on Efficient Motion Estimation” Ram Srinivasan et al., IEEE Transactions on Communications, vol. COM-33, No. 8, pp. 888-896e, Aug. 1985.

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