Patent Document ID: 8068147
Application ID: 12337839
Patent Status: 1

Claim One:
1. A method on a personal communications device for setting a white balance in a frame of a video, the video comprising a previous frame, the method comprising: receiving, by the personal communications device, the video and an ambiguous color reference list; logically dividing, by the personal communications device, the frame into a plurality of sub-regions; for each sub-region, comparing, by the personal communications device, an averaged color of pixels in the sub-region with a set of neutral reference color values predefined under a plurality of lighting conditions and determining that the sub-region is possibly dominantly monochromatic if a difference between the averaged color of the sub-region pixels and each color value in the neutral reference color set is greater than a first threshold; for each sub-region not determined to be possibly dominantly monochromatic, for each color value in the neutral reference color set whose difference from the averaged color of the sub-region pixels is less than or equal to the first threshold, determining, by the personal communications device, that the sub-region is possibly dominantly monochromatic if the neutral reference color value and an illuminant type of a previous frame matches, within a second threshold, an element of the ambiguous color reference list; and white balancing the frame based on sub-regions determined not to be possibly dominantly monochromatic.