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| Human Motion Data Retrieval Based on Dynamic Time Warping Optimization Algorithm |
| LIU Xian-Mei1,2, ZHAO Dan2, HAO Ai-Min1 |
1. State Key Laboratory of Virtual Reality Technology and System,Beihang University,Beijing 100083
2.School of Computer and Information Technology,Northeast Petroleum University,Daqing 163318 |
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Abstract With the emergence of many large-scale three-dimensional human motion databases, content-based retrieval of 3D human motion faces many difficulties. A human motion data retrieval technology based on improved dynamic time warping optimization algorithm is proposed, by which logically similar motions can be found effectively. Firstly, the coordinates of two motion sequences are aligned and a distance matrix based on window of frames is constructed. Then, using an optimization algorithm based on global and local constraints, a similarity matching is processed to describe corresponding relationship between two motions. Finally, similar motions are retrieved by two-phase approach with normalization similarity and DTW average distance. The experimental results show that by two-phase DTW optimization approach, better retrieval results for motions which are not aligned in time axis are obtained and the efficiency is improved.
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Received: 25 March 2011
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2012, Vol. 25 
