Patent ID: 8509538

Claim:
A method of obtaining a refined Gabor feature corresponding to a sub-region of an image, comprising: receiving an image; obtaining a Gabor representation of the received image by using a Gabor filter; determining a region from the Gabor representation, wherein the region comprises a first plurality of Gabor pixels of the Gabor representation; determining a sub-region from the region, wherein the sub-region comprises a second plurality of Gabor pixels of the Gabor representation, each of the Gabor pixels of the sub-region also being Gabor pixels of the region; calculating a magnitude sum in the Gabor pixels of the region and in the Gabor pixels in the sub-region; and calculating a refined Gabor feature for the sub-region based upon a magnitude calculation by dividing the magnitude sum for the sub-region by the magnitude sum for and the region.