Adaptive video prefilter

Details Adaptive video prefilter Adaptive video prefilter

2008-07-01

2008-07-01

Vo, Tung (Department: 2621)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C348S620000, C375S240150

Reexamination Certificate

active

10666668

ABSTRACT:
A method for adaptively filtering a video signal prior to encoding is provided. The method initiates with calculating a local gradient indicative of a region type. Then, a weight factor is determined based upon the local gradient. Next, the weight factor is applied to a difference signal according to the region type. A computer readable media, an integrated circuit and a system for processing an image data signal are also provided.

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