FAST SUBSPACE PROJECTION OF DESCRIPTOR PATCHES FOR IMAGE RECOGNITION
First Claim
Patent Images
1. A method for generating a feature descriptor, comprising:
- obtaining a set of pre-generated sparse projection vectors;
obtaining a scale space for an image, the scale space having a plurality scale levels; and
generating a descriptor for a keypoint in the scale space based on a combination of the sparse projection vectors and sparsely sampled pixel information for a plurality of pixels across the plurality of scale levels.
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Abstract
A method for generating a feature descriptor is provided. A set of pre-generated sparse projection vectors is obtained. A scale space for an image is also obtained, where the scale space having a plurality scale levels. A descriptor for a keypoint in the scale space is then generated based on a combination of the sparse projection vectors and sparsely sampled pixel information for a plurality of pixels across the plurality of scale levels.
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Citations
60 Claims
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1. A method for generating a feature descriptor, comprising:
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obtaining a set of pre-generated sparse projection vectors; obtaining a scale space for an image, the scale space having a plurality scale levels; and generating a descriptor for a keypoint in the scale space based on a combination of the sparse projection vectors and sparsely sampled pixel information for a plurality of pixels across the plurality of scale levels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A device, comprising:
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a storage device storing for storing a set of pre-generated sparse projection vectors; and a processing circuit coupled to the storage device, the processing circuit adapted to; obtain a scale space for an image, the scale space having a plurality scale levels; and generate a descriptor for a keypoint in the scale space based on a combination of the sparse projection vectors and sparsely sampled pixel information for a plurality of pixels across the plurality of scale levels. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A device, comprising:
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means for obtaining a set of pre-generated sparse projection vectors; means for obtaining a scale space for an image, the scale space having a plurality scale levels; and means for generating a descriptor for a keypoint in the scale space based on a combination of the sparse projection vectors and sparsely sampled pixel information for a plurality of pixels across the plurality of scale levels. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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46. A processor-readable medium comprising one or more instructions operational on a device, which when executed by a processing circuit, causes the processing circuit to:
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obtain a set of pre-generated sparse projection vectors; obtain a scale space for an image, the scale space having a plurality scale levels; and generate a descriptor for a keypoint in the scale space based on a combination of the sparse projection vectors and sparsely sampled pixel information for a plurality of pixels across the plurality of scale levels. - View Dependent Claims (47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60)
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Specification