Image processing
First Claim
Patent Images
1. An image processing method comprising:
- quantizing pixel properties amongst contiguous groups of a predetermined number of pixels in at least a portion of an image under test to obtain quantized pixel property values;
detecting contributions of the pixel properties to the quantized pixel property values;
detecting, after the quantizing, a statistical distribution of permutations of the pixel properties and weighting the permutations based on the contributions to derive feature data from at least the portion of the image under test; and
comparing the feature data derived from at least the portion of the image under test with feature data derived from at least respective portions of one or more other images to detect a degree of similarity between the image under test and the one or more other images, whereinthe pixel properties are color properties.
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Abstract
An image processing method includes detecting statistical distribution of permutations of pixel properties amongst contiguous groups of a predetermined number of pixels in at least a portion of an image under test, so as to derive feature data in respect of the image under test, and comparing the feature data derived in respect of the image under test with feature data derived from at least respective portions of one or more other images so as to detect a similarity between the image under test and the one or more other images.
13 Citations
28 Claims
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1. An image processing method comprising:
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quantizing pixel properties amongst contiguous groups of a predetermined number of pixels in at least a portion of an image under test to obtain quantized pixel property values; detecting contributions of the pixel properties to the quantized pixel property values; detecting, after the quantizing, a statistical distribution of permutations of the pixel properties and weighting the permutations based on the contributions to derive feature data from at least the portion of the image under test; and comparing the feature data derived from at least the portion of the image under test with feature data derived from at least respective portions of one or more other images to detect a degree of similarity between the image under test and the one or more other images, wherein the pixel properties are color properties. - View Dependent Claims (2, 3, 8, 16)
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4. An image processing method comprising:
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detecting a statistical distribution of permutations of pixel properties amongst contiguous groups of a predetermined number of pixels in at least a portion of an image under test; generating occurrence frequency data of possible permutations of group pixel properties; concatenating the occurrence frequency data to generate a feature vector as feature data derived from at least the portion of the image under test; and comparing the feature data derived from at least the portion of the image under test with feature data derived from at least respective portions of one or more other images to detect a degree of similarity between the image under test and the one or more other images. - View Dependent Claims (5, 6, 7, 17, 18, 19)
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9. A non-transitory computer readable medium comprising program code which, when executed by a computer, executes a method comprising:
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quantizing pixel properties amongst contiguous groups of a predetermined number of pixels in at least a portion of an image under test to obtain quantized pixel property values; detecting contributions of the pixel properties to the quantized pixel property values; detecting, after the quantizing, a statistical distribution of permutations of the pixel properties and weighting the permutations based on the contributions to derive feature data from at least the portion of the image under test; and comparing the feature data derived from at least the portion of the image under test with feature data derived from at least respective portions of one or more other images to detect a degree of similarity between the image under test and the one or more other images, wherein the pixel properties are color properties.
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10. An image processing apparatus comprising:
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a quantizer to quantize pixel properties amongst contiguous groups of a predetermined number of pixels in at least a portion of an image under test to obtain quantized pixel property values; a detector to detect contributions of the pixel properties to the quantized pixel property values, to detect a statistical distribution of permutations of the pixel properties, and to weight the permutations based on the contributions to derive feature data from at least the portion of the image under test; and a comparator to compare the feature data derived from at least the portion of the image under test with feature data derived from at least respective portions of one or more other images to detect a degree of similarity between the image under test and the one or more other images, wherein the pixel properties are color properties. - View Dependent Claims (11, 12, 13, 14, 15)
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20. An image processing apparatus comprising:
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a detector to detect a statistical distribution of permutations of pixel properties amongst contiguous groups of a predetermined number of pixels in at least a portion of an image under test; a generator to generate occurrence frequency data of possible permutations of group pixel properties; a processor to concatenate the occurrence frequency data to generate a feature vector as feature data derived from at least the portion of the image under test; and a comparator to compare the feature data derived from at least the portion of the image under test with feature data derived from at least respective portions of one or more other images to detect a degree of similarity between the image under test and the one or more other images. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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28. A non-transitory computer readable medium comprising program code which, when executed by a computer, executes a method comprising:
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detecting a statistical distribution of permutations of pixel properties amongst contiguous groups of a predetermined number of pixels in at least a portion of an image under test; generating occurrence frequency data of possible permutations of group pixel properties; concatenating the occurrence frequency data to generate a feature vector as feature data derived from at least the portion of the image under test; and comparing the feature data derived from at least the portion of the image under test with feature data derived from at least respective portions of one or more other images to detect a degree of similarity between the image under test and the one or more other images.
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Specification