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Learning contrastive feature distribution model for interaction recognition

机译:学习用于交互识别的对比特征分布模型

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In this paper, we learn a Contrastive Feature Distribution Model (CFDM) for interaction recognition. Our contributions are three-folded. First of all, we introduce an intra-inter-frame skeleton feature for interaction description. Secondly, we learn CFDM for a discriminative representation of interactions. In this step, we mine contrastive features to create a dictionary, and learn the probability distribution of dictionary words to construct CFDM in positive and negative training samples. With CFDM, we represent interactions in a discriminative way for recognition. Since there is few skeleton based interaction databases now, we capture a new database, CR-UESTC, which is the third contribution. We evaluate the proposed CFDM approach on CR-UESTC and SBU interaction databases, and compare the result of CFDM with the CM and the BoW approach. The comparison indicates that the recognition accuracy of three approaches is: CFDM > CM > BoW. Compared with Yun et al. (2012), the proposed CFDM also obtain a better result on SBU database. (C) 2015 Elsevier Inc. All rights reserved.
机译:在本文中,我们学习了一种用于交互识别的对比特征分布模型(CFDM)。我们的贡献是三方面的。首先,我们介绍了帧间帧内骨架功能以进行交互描述。其次,我们学习CFDM来区分交互。在这一步中,我们挖掘对比特征以创建字典,并学习字典词在正负训练样本中构造CFDM的概率分布。使用CFDM,我们以区分性的方式表示交互以进行识别。由于现在基于骨架的交互数据库很少,因此我们捕获了一个新的数据库CR-UESTC,这是第三项贡献。我们在CR-UESTC和SBU交互数据库上评估了所提出的CFDM方法,并将CFDM的结果与CM和BoW方法进行了比较。比较表明,三种方法的识别精度为:CFDM> CM> BoW。与Yun等人比较。 (2012年),提出的CFDM在SBU数据库上也获得了更好的结果。 (C)2015 Elsevier Inc.保留所有权利。

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