Patent ID: 9652870
Date: 2017-05-16
CPC Classifications: G06T,H04N

Claim:
1. A filtering tone mapper comprising: a two-dimensional filter; and a tone mapper configured to apply tone mapping to a video frame in accordance with a tone mapping function to generate a processed video frame, wherein the tone mapper operates in conjunction with the two-dimensional filter to apply the tone mapping to pixels of the video frame based on a plurality of adjacent pixels of the video frame; wherein the two-dimensional filter generates filtered tone mapping ratios by two-dimensional filtering tone mapping ratios of the pixels of the video frame based on tone mapping ratios corresponding to the plurality of adjacent pixels of the video frame; and wherein the tone mapper generates the processed video frame by applying the filtered tone mapping ratios to color values, luminance values or chrominance values of the pixels of the video frame and wherein the tone mapper includes the two-dimensional filter, a chrominance/luminance generator, a ratio generator and a multiplier arranged in a predetermined order.