Patent ID: 8103097
Filing Date: 2012-01-24
Classification: G06T

Abstract:
1. A method performed by one or more processes executing on a machine, the method comprising: accessing a first color image having values in RGB channels for each of a plurality of points within the first color image, wherein the RGB channels comprise a red (R) channel, a green (G) channel, and a blue (B) channel; generating a first pseudo-color image at least in part by applying histogram-equalization transformations to the values in the RGB channels of the first color image independently of the values in the other RGB channels of the first color image, such that the generated first pseudo-color image is invariant to both (i) illumination conditions of a scene depicted in the first color image and (ii) response of an imaging device that acquired the first color image; generating a three-dimensional RGB histogram of the first pseudo-color image; identifying a match to the first color image at least in part by