发明名称 |
BI-DIRECTIONAL TRACKING USING TRAJECTORY SEGMENT ANALYSIS |
摘要 |
The present video tracking technique outputs a Maximum A Posterior (MAP) solution for a target object based on two object templates obtained from a start and an end keyframe of a whole state sequence. The technique first minimizes the whole state space of the sequence by generating a sparse set of local two-dimensional modes in each frame of the sequence. The two-dimensional modes are converted into three-dimensional points within a three-dimensional volume. The three-dimensional points are clustered using a spectral clustering technique where each cluster corresponds to a possible trajectory segment of the target object. If there is occlusion in the sequence, occlusion segments are generated so that an optimal trajectory of the target object can be obtained. |
申请公布号 |
EP1934941(A4) |
申请公布日期 |
2011.09.07 |
申请号 |
EP20060825929 |
申请日期 |
2006.10.13 |
申请人 |
MICROSOFT CORPORATION |
发明人 |
SUN, JIAN;ZHANG, WEIWEI;TANG, XIAOOU;SHUM, HEUNG-YEUNG |
分类号 |
G06T7/20 |
主分类号 |
G06T7/20 |
代理机构 |
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