System and method for predictive motion estimation using a...

Details System and method for predictive motion estimation using a... System and method for predictive motion estimation using a...

2008-01-22

2008-01-22

Philippe, Gims (Department: 2621)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C382S236000

Reexamination Certificate

active

10672820

ABSTRACT:
A system and method are provided for using global motion predictors (GMPs) in predictive motion estimation for the compression of video. The method comprises: receiving video frames; generating a set of global motion parameters for a current frame of video; in response to the global motion parameters, generating GMPs for image blocks in the current frame; estimating motion between the current frame and a reference frame; subtracting reference blocks in the reference frame from image blocks in the current frame, leaving residual image blocks; and, encoding the residual image blocks in a video stream. Some aspects of the method further comprise: generating local motion predictors (LMPs). Then, estimating motion between the current frame and a reference frame includes estimating motion using the GMPs and the LMPs. The process of estimating motion typically involves using previously encoded information, such as temporarily distant reference frames or other image blocks in the current frame.

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patent: 2003/0202591 (2003-10-01), Panusopone
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