Patent ID: 8542919
Filing Date: 2013-09-24
Classification: G06T

Abstract:
1. An image sensor, comprising: a reference image luminance extractor, operative to partition a reference image into a plurality of reference image blocks, extract luminance values of four edge pixels of each of the plurality of reference image blocks and calculate a luminance weight value for each of the edge pixels; a luminance weight value calculator operatively coupled to the reference image luminance extractor, operative to calculate a luminance weight value of each pixel of a corresponding reference image block, on the basis of luminance weight values of four edge pixels of the corresponding reference image block, for each of the plurality of reference image blocks; and a luminance corrector operatively coupled to the luminance weight value calculator, operative to correct the luminance of an input image by multiplying the luminance weight value for each pixel, calculated by the luminance weight value calculator, with a luminance value of each pixel of the input image.