发明名称 |
METHOD AND APPARATUS FOR EXPRESSING MOTION OBJECT |
摘要 |
A method and an apparatus for expressing a motion object are disclosed. The method includes obtaining a stereo image in which the motion object has been captured, the stereo image including a depth image; extracting a key point from the motion object in the stereo image; determining, based on statistical information relating to three-dimensional motion of pixels within a first predetermined region surrounding the key point, a dominant direction of the key point; determining, based on the dominant direction of the key point, motion vectors of pixels within a second predetermined region surrounding the key point to obtain rotation invariant motion vectors; and extracting, based on the determined motion vectors of the pixels within the second predetermined region surrounding the key point, a feature describing the key point. The present invention can extract features of motion object that are irrelevant to a viewing angle of a camera. |
申请公布号 |
US2015243038(A1) |
申请公布日期 |
2015.08.27 |
申请号 |
US201514629650 |
申请日期 |
2015.02.24 |
申请人 |
ZHAO Ying |
发明人 |
ZHAO Ying |
分类号 |
G06T7/00;G06T7/20;G06K9/00;G06T1/00 |
主分类号 |
G06T7/00 |
代理机构 |
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代理人 |
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主权项 |
1. A method for expressing a motion object, the method comprising:
obtaining a stereo image in which the motion object has been captured, the stereo image including a depth image; extracting a key point from the motion object in the stereo image; determining, based on statistical information relating to three-dimensional motion of pixels within a first predetermined region surrounding the key point, a dominant direction of the key point; determining, based on the dominant direction of the key point, motion vectors of pixels within a second predetermined region surrounding the key point to obtain rotation invariant motion vectors; and extracting, based on the determined motion vectors of the pixels within the second predetermined region surrounding the key point, a feature describing the key point. |
地址 |
Beijing CN |