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.