Method and apparatus for obtaining and processing Gabor image features
AssigneeIntel Corporation
InventorsJianguo Li, Tao Wang, Yimin Zhang
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Abstract
Machine-readable media, methods, apparatus and system for obtaining and processing image features are described. In some embodiments, a Gabor representation of an image may be obtained by using a Gabor filter. A region may be determined from the Gabor representation, wherein the region comprises a plurality of Gabor pixels of the Gabor representation; and, a sub-region may be determined from the region, wherein the sub-region comprises more than one of the plurality of Gabor pixels. Then, a Gabor feature may be calculated based upon a magnitude calculation related to the sub-region and the region.
Claims22
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.
An apparatus, comprising:
- a Gabor filter to obtain a Gabor representation of an image;
- a region logic to determine a region from the Gabor representation, wherein the region comprises a plurality of Gabor pixels of the Gabor representation;
- a sub-region logic to determine 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;
- and
- a feature calculating logic to calculate a magnitude sum in the Gabor pixels of the region and in the Gabor pixels in the sub-region and to calculate 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 the region.
A system, comprising:
- a processor;
- a machine-readable medium coupled to the processor, wherein the machine-readable medium further comprises a plurality of instructions which, if executed by the processor, cause the system to perform operations 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 the region.
Dependencies are inferred from the claim text.