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Some topic models like Latent Dirichlet Allocation (LDA) only use orderless visual-words without considering spatial context information. To model spatial structure for improving scene recognition performance, we propose two novel topic models called Multi-scale Spatial Topic Model (MS-TM) and Multi-scale Spatial Discriminative Topic Model (MS-DTM). Both MS-TM and MS-DTM can effectively fuse multi-scale...
Automatic behavior recognition is one important task of community security and surveillance system. In this paper, a novel method is proposed for automatic selection of behavior models by iterative learning and abnormality recognition. The method is mainly composed of the following two steps: (1) The models of normal behaviors are automatically selected and trained by combining Dynamic Time Warping...
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