Patent ID: 8063992
Filing Date: 2011-11-22
Classification: H04N,H05B

Abstract:
1. A method for dominant color extraction from video content encoded in a rendered color space (RGB) to produce a dominant color (DC) for emulation by an ambient light source ( 88 ), the method comprising the steps of: (1) quantizing at least some pixel chromaticities (Cp) from said video content in said rendered color space to form a distribution of assigned colors (AC); (2) performing dominant color extraction from said distribution of assigned colors to produce a dominant color by extracting any of: (a) a mode of said assigned colors, (b) a median of said assigned colors, (c) a weighted average by chromaticity of said assigned colors, and (d) a weighted average using a weighting function (W(i,j,R)); (3) transforming said dominant color from said rendered color space to a second rendered color space (R′G′B′) so formed as to allow driving said ambient light source.