METHOD FOR RECOGNIZING OBJECT USING COVARIANCE DESCRIPTOR AND APPARATUS THEREOF
First Claim
1. A method for recognizing objects, performed in an information processing apparatus which can perform digital signal processing, the method comprising:
- extracting a feature point of an object to be recognized in an input image;
generating a plurality of feature images by extracting orientation information of a region adjacent to the feature point and normalizing the region based on the orientation information;
deriving a covariance descriptor based on the plurality of feature images; and
recognizing the object in the input image by comparing the covariance descriptor with at least one reference covariance descriptor stored in advance.
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Abstract
Disclosed are object recognizing method and apparatus. The method may comprise extracting a feature point of an object to be recognized in an input image; generating a plurality of feature images by extracting orientation information of a region adjacent to the feature point and normalizing the region based in the orientation information; deriving a covariance descriptor based on the feature images; and recognizing the object in the input image by comparing the covariance descriptor with a reference covariance descriptor stored in advance. Thus, the object can be recognized fast and robustly to changes on the size of the input image, rotations of the input image, and illumination, whereby the recognition performance can be enhanced.
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Citations
15 Claims
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1. A method for recognizing objects, performed in an information processing apparatus which can perform digital signal processing, the method comprising:
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extracting a feature point of an object to be recognized in an input image; generating a plurality of feature images by extracting orientation information of a region adjacent to the feature point and normalizing the region based on the orientation information; deriving a covariance descriptor based on the plurality of feature images; and recognizing the object in the input image by comparing the covariance descriptor with at least one reference covariance descriptor stored in advance. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for recognizing objects from an input image, which is equipped in an information processing apparatus capable of performing digital signal processing, the apparatus comprising:
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a feature point extracting part extracting a feature point of an object to be recognized in an input image; a feature image generating part generating a plurality of feature images by extracting orientation information of a region adjacent to the feature point and normalizing the region based on the orientation information; a descriptor deriving part deriving a covariance descriptor based on the feature images; and an object recognizing part recognizing the object in the input image by comparing the covariance descriptor with a reference covariance descriptor stored in advance. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification