Method, system and apparatus for comparing objects in images
AssigneeCanon Kabushiki Kaisha
InventorsGetian Ye, Ka Ming Leung
Life of this patent
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Abstract
A method of comparing objects in images. A dictionary determined from a plurality of feature vectors formed from a test image and codes formed by applying the dictionary to the feature vectors, is received. The dictionary is based on a modified manifold obtained by determining correspondences for codes using pairwise similarities between codes. Comparison codes are determined for the objects in the images by applying the dictionary to feature vectors of the objects in the images. The objects in the images are compared based on the comparison codes of the objects.
Claims15
A method of comparing objects in images, the method comprising:
- receiving a dictionary determined from a plurality of feature vectors formed from a test image and codes formed by applying the dictionary to the feature vectors, wherein the dictionary is based on a modified manifold obtained by determining correspondences for codes using pairwise similarities between codes;
- determining comparison codes for the objects in the images by applying the dictionary to feature vectors of the objects in the images;
- and
- comparing the objects in the images based on the comparison codes of the objects.
An apparatus for comparing objects in images, the apparatus comprising:
- means for receiving a dictionary determined from a plurality of feature vectors formed from a test image and codes formed by applying the dictionary to the feature vectors, wherein the dictionary is based on a modified manifold obtained by determining correspondences for codes using pairwise similarities between codes;
- means for determining comparison codes for the objects in the images by applying the dictionary to feature vectors of the objects in the images;
- and
- means for comparing the objects in the images based on the comparison codes of the objects.
A system for comparing objects in images, the system comprising:
- a memory for storing data and a computer program;
- a processor coupled to the memory for executing the computer program, the computer program having instructions for:
- receiving a dictionary determined from a plurality of feature vectors formed from a test image and codes formed by applying the dictionary to the feature vectors, wherein the dictionary is based on a modified manifold obtained by determining correspondences for codes using pairwise similarities between codes,
- determining comparison codes for the objects in the images by applying the dictionary to feature vectors of the objects in the images, and
- comparing the objects in the images based on the comparison codes of the objects.
A non-transitory computer readable medium storing a computer program to cause an apparatus to perform a method of comparing objects in images, the method comprising:
- receiving a dictionary determined from a plurality of feature vectors formed from a test image and codes formed by applying the dictionary to the feature vectors, wherein the dictionary is based on a modified manifold obtained by determining correspondences for codes using pairwise similarities between codes;
- determining comparison codes for the objects in the images by applying the dictionary to feature vectors of the objects in the images;
- and
- comparing the objects in the images based on the comparison codes of the objects.
Dependencies are inferred from the claim text.