Patent ID: 7826661
Filing Date: 2010-11-02
Classification: G06F,G06K,G06T

Abstract:
1. A method of searching for a group of images using at least one processor to process signals corresponding to the images, the method comprising: comparing, using a processor, a query dominant colour descriptor with a plurality of group descriptors for groups of images using a matching procedure; and selecting one or more group of images for which the matching procedure indicates the closest match or matches, wherein the group descriptors are derived using a method of representing a group of images, the method comprising determining the values of one or more dominant colours for the group of images and deriving a group dominant colour representation expressing the group of images in terms of one or more of said dominant colour values, wherein at least some of the images in the group of images are represented by a respective image dominant colour representation in terms of one or more dominant colour values for the image, where each of the image dominant colour representations has one or more components including at least one dominant colour value, and for each dominant colour value, a variance indicating colour distribution variance of the image with respect to the dominant colour value, and a weight indicating the influence of the dominant colour in the image, said variance being calculated for each image dominant colour using where j indexes the color component, m wherein for two dominant colours m  where w