Patent ID: 6895111
Filing Date: 2005-05-17
Classification: G06F,G06K

Abstract:
1. A computer based method for evaluating a graphic image file for the presence of objectionable visual content, the graphic image file comprising a number of pixels each having spectral components defined in accordance with a color model, the method comprising steps of: (a) evaluating relative weighting of the spectral components of each pixel in turn to classify each said pixel as either not presenting human skin or as possibly representing human skin; and (b) processing the graphic image file in relation to the resulting classification of each said pixel during the evaluating step (a); wherein the color model comprises an RGB color model so that the spectral components of each pixel are expressed as a set of red, green and blue (R, G, B) components corresponding to the respective amounts of red, green and blue in each pixel; and further wherein each of the (R, G, B) components has a numeric value ranging from m to n, and wherein the evaluating step (a) comprises a step of comparing the respective numeric values of the (R, G, B) components; and further wherein said pixel is classified as not representing humman skin when at least one of the following conditions is satisfied: