US Patent:
20100246688, Sep 30, 2010
Inventors:
Gianluca FILIPPINI - Los Gatos CA, US
Xiaosong ZHOU - Campbell CA, US
James Oliver NORMILE - Los Altos CA, US
Xiaojin SHI - Fremont CA, US
Ionut HRISTODORESCU - San Jose CA, US
Assignee:
Apple Inc. - Cupertino CA
International Classification:
H04N 7/12
Abstract:
Example embodiments of the present invention provide a method or device for coding source video. The method or device may provide for a segment of video frames from the source video, computing a noise map for the segment of the source video where the noise map is computed from differences among pixels selected from spatially-distributed sampling patterns in the segment, computing control parameter adjustments based on the noise map, and coding the selected segment of source video according to control parameters generated from a default coding policy and the control parameter adjustments, where the default coding policy includes default control parameters of the encoder.