Method and system for video noise reduction based on moving...

Details Method and system for video noise reduction based on moving... Method and system for video noise reduction based on moving...

2005-12-20

2009-08-11

Hsia, Sherrie (Department: 2622)

Television

Format conversion

Line doublers type

C348S620000, C348S701000

Reexamination Certificate

active

07573530

ABSTRACT:
A method and a system for video noise reduction based on moving content detection are described. Aspects of a system for processing images may include circuitry within a chip that determines a motion metric that indicates an amount of motion between a current video picture and at least one of the following: at least one preceding video picture and at least one subsequent video picture. The motion metric may be computed from a maximum value derived by summing, over a plurality of corresponding pixels that are located within a region around a reference pixel in a current video picture, differences in values of the plurality of corresponding pixels. The circuitry within the chip may also compute a blending factor that has a nonlinear relationship to the motion metric. The circuitry within the chip may adjust at least one pixel in the current video picture based on the computed blending factor.

REFERENCES:
patent: 6643387 (2003-11-01), Sethuraman et al.
patent: 2008/0062327 (2008-03-01), MacInnis et al.

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