Patent ID: 8200044
Filing Date: 2012-06-12
Classification: G06F,G06T,G09G

Abstract:
1. A method of assessing whether a plurality of values of adjacent pixels represents computer generated graphics, comprising: analyzing said plurality of values to determine if said plurality of values contain frequency components representative of computer generated graphics; and providing an output indicating whether said plurality of pixels include one of either computer generated graphics or an image acquired from a physical scene based on the frequency content of the plurality of adjacent pixels; and wherein said analyzing comprises determining if said plurality of values includes a pixel value pattern indicative of one of a step, an impulse, or variations at about the sampling rate of said plurality of values by comparing groups of adjacent ones of said plurality of values to defined patterns representative of a step, an impulse, or variations at about the sampling rate of said plurality of values, each of said groups of adjacent ones of said plurality of values comprises values, A, B, C and D, of four adjacent pixels in said image, and analyzing comprises forming: where G 1 represents a gain factor.