发明名称 |
KEYPOINT DESCRIPTOR GENERATION BY COMPLEX WAVELET ANALYSIS |
摘要 |
The present invention relates to a method of generating a keypoint descriptor for identifying an object in an image or in a sequence of images, the keypoint descriptor being substantially invariant to a transformation of the object in the image. The method includes receiving object data representing an object for identification in an image; processing said object data to generate at least one basis function representing a feature having undergone at least one transformation or a transformation sequence across several consecutive frames, optionally using transformations that are out of the image plane to recognise objects from multiple views; modifying a prototype wavelet function based on said at least one basis function to generate a plurality of modified wavelet functions; comparing the plurality of modified wavelet functions with the at least one basis function; selecting a modified wavelet function of said plurality of modified wavelet functions based on the comparison of the plurality of modified wavelet functions with the at least one basis function; and processing an input image or input orientation field according to said selected modified wavelet function to generate the keypoint descriptor. The present invention further relates to a method of identifying an object in an image using a keypoint descriptor; and apparatus and computer software for implementing a method in accordance with the present invention. |
申请公布号 |
WO2010052284(A1) |
申请公布日期 |
2010.05.14 |
申请号 |
WO2009EP64716 |
申请日期 |
2009.11.05 |
申请人 |
IMPERIAL INNOVATIONS LTD;BHARATH, ANIL ANTHONY;NG SING KWONG, JEFFREY |
发明人 |
BHARATH, ANIL ANTHONY;NG SING KWONG, JEFFREY |
分类号 |
G06K9/46 |
主分类号 |
G06K9/46 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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