Noise detection and estimation techniques for picture...

Details Noise detection and estimation techniques for picture... Noise detection and estimation techniques for picture...

2011-07-19

2011-07-19

Patel, Kanji (Department: 2624)

Image analysis

Image enhancement or restoration

C382S260000, C382S275000, C358S003270, C348S607000

Reexamination Certificate

active

07983501

ABSTRACT:
A method of filtering noise from a picture may include determining a set of pixel noise metrics for a set of selected pixels in the picture based solely on information from the set of selected pixels in the picture. The method may also designate as valid a subset of pixel noise metrics in the set of pixel noise metrics those associated pixels are not located at an edge or are not located in a complicated area of the picture. A set of block noise metrics may be calculated from the valid subset of pixel noise metrics, and a global noise metric for the picture may be ascertained from the set of block noise metrics. The picture may be filtered using the global noise metric to generate a filtered picture.

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European Patent Office, European Search Report issued in corresponding EP Application No. 08799717.7, dated Dec. 21, 2010, 3 pgs.

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