Patent ID: 8437540
Filing Date: 2013-05-07
Classification: A61P,G06T

Abstract:
1. A method for characterizing skin pigment spots, comprising: a) taking at least one digital color image, using a digital color image-taking device, of at least one determined area of skin including at least a portion of a pigment spot, said image being defined by a multiplicity of pixels, said image being transmitted to a digital image processing device to be stored; b) dividing the stored digital image into three color planes: red, green, blue, called R, G, B, using said image processing device; c) extracting just one of these planes, or a combination of these planes; d) filtering at least a portion of the extracted plane to obtain a first sub-image designated a ripple image characterizing wide spatial variations of gray levels for each pixel of said extracted image and a second sub-image designated a roughness image characterizing small spatial variations of the gray levels for each pixel of said extracted image; e) using appropriate computation means to calculate, over at least a portion of at least the ripple image, and of at least a portion of the roughness image, at least one parameter from: the arithmetic mean of the mean deviations of the gray levels; the root mean square of the mean deviations of the gray levels; the difference between the lowest gray level and the highest gray level; the difference between the highest gray level and the average of the gray levels; and the difference between the lowest gray level and the average of the gray levels;