Patent ID: 7630526
Filing Date: 2009-12-08
Classification: G06K

Abstract:
1. A method of representing an image using one or more processors to process signals corresponding to the images, the method comprising: segmenting, using a processor, the image into component images; transforming, using a processor, the component images into the frequency domain; deriving, using a processor, a plurality of feature vectors using the transformed component images in the frequency domain, wherein said plurality of feature vectors has a grand mean, and wherein each feature vector belongs to a class with the feature vectors in a class having a class centroid; and generating and outputting descriptor data representative of the image, the generation of the descriptor data comprising performing, using a processor, at least one stage of discrimination transformations using a discrimination transformation matrix generated by forming a third matrix by performing a singular value decomposition of the first matrix and taking the first q left singular vectors corresponding to the q largest singular values, wherein q is a first dimension value;