Television – Camera – system and detail – Optics
Reexamination Certificate
2005-04-15
2009-06-09
Ho, Tuan V (Department: 2622)
Television
Camera, system and detail
Optics
C348S221100, C348S363000, C358S466000, C382S274000
Reexamination Certificate
active
07545435
ABSTRACT:
In some embodiments, images for the video conference may be white balanced and/or exposure controlled. White balancing may include dividing an image's pixels into multiple ranges according to their luminance and chrominance values. In some embodiments, blue and red analog gains may be modified to bring red and blue accumulations closer to green accumulations. In some embodiments, luminance values for an image may be adjusted by increasing or decreasing exposure. The decision whether to increase or decrease the exposure may be made by looking at statistics for luminance values of skin colored regions if there are sufficient skin colored regions on the image. Otherwise, luminance values for the entire image may be analyzed to determine whether to increase or decrease exposure.
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