发明名称 |
Detection of human actions from video data |
摘要 |
A video action detection system uses feature a data extractor to extract feature data from video data at detected spatiotemporal interest points. A feature data quantizer assigns the extracted feature values to bins of a feature histogram. Bin values are computed from a sum of contributions of spatiotemporal points of interest that have been assigned to the bin, with a bin dependent adjustment of a size of the sum and/or the contributions. The video action detection system computes a sum of match scores between the feature histogram and reference histograms for the predetermined type of action. The bin dependent adjustment of the size of the sum and/or the contributions is adapted in a training step, based on partial match scores for individual bins obtained using an initial action detector. |
申请公布号 |
EP2728513(A1) |
申请公布日期 |
2014.05.07 |
申请号 |
EP20120190869 |
申请日期 |
2012.10.31 |
申请人 |
NEDERLANDSE ORGANISATIE VOOR TOEGEPAST -NATUURWETENSCHAPPELIJK ONDERZOEK TNO |
发明人 |
BURGHOUTS, GERARDUS JOHANNES |
分类号 |
G06K9/62;G06K9/46 |
主分类号 |
G06K9/62 |
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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