Patent ID: 8941755
Filing Date: 2015-01-27
Classification: H04N

Abstract:
1. An apparatus, comprising circuitry, wherein the circuitry is configured to: divide a frame of image data comprising red, green and blue color elements into a plurality of blocks including a plurality of pixel data; define a plurality of intensity ranges for the plurality of pixel data in a block, in which the intensity ranges are different with each other; judge, for each of the intensity ranges, whether the blocks are likely to be grey in the intensity range and to cumulate average values of colors of the blocks judged as being likely to be grey in the intensity range for the respective color elements where criteria for grey judgment are different for each intensity range and use the red, green and blue color elements; provide, for each of the red, green and blue color elements, variable weightings to the cumulated values for the different intensity ranges, and to mix the variably weighted cumulated values, and; decide the gains for adjusting a white balance based on the mixed variably weighted cumulated values for the respective red, green and blue color elements.