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LOCAL FEATURE DESCRIPTOR EXTRACTING APPARATUS, METHOD FOR EXTRACTING LOCAL FEATURE DESCRIPTOR, AND PROGRAM
LOCAL FEATURE DESCRIPTOR EXTRACTING APPARATUS, METHOD FOR EXTRACTING LOCAL FEATURE DESCRIPTOR, AND PROGRAM
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机译:局部特征描述符提取装置,局部特征描述符的提取方法和程序
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摘要
The size of a feature descriptor is reduced with the accuracy of object identification maintained. A local feature descriptor extracting apparatus includes a feature point detecting unit configured to detect feature points in an image, a local region acquiring unit configured to acquire a local region for each of the feature points, a subregion dividing unit configured to divide each local region into a plurality of subregions, a subregion feature vector generating unit configured to generate a feature vector with a plurality of dimensions for each of the subregions in each local region, and a dimension selecting unit configured to select dimensions from the feature vector in each subregion so as to reduce a correlation between the feature vectors in proximate subregions based on positional relations among the subregions in each local region and output elements of the selected dimensions as a feature descriptor of the local region.
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