Calderara, S.; Cucchiara, R.; Prati, A. "Action Signature: a Novel Holistic Representation for Action Recognition" AVSS 2008 : IEEE Fifth International Conference on Advanced Video and Signal Based Surveillance, Santa F (NM), pp. 121 -128 , 1-3 September 2008, 2008 DOI: 10.1109/AVSS.2008.32

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