arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1502.06076cs.CV
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一种基于热图的视频群体活动识别算法

A Heat-Map-based Algorithm for Recognizing Group Activities in Videos

Shanghai Jiao Tong University(上海交通大学);Nanjing University(南京大学);MediaTek Inc.(联发科技股份有限公司)

Weiyao Lin, Hang Chu, Jianxin Wu, Bin Sheng, Zhenzhong Chen

摘要:

本文提出了一种新的基于热图的群体活动识别算法。该算法首先将人体运动轨迹建模为一系列的“热源”,然后应用热扩散过程来创建一个热图(HM)来表示群体活动。在此基础上,提出了一种新的基于关键点(KPB)的方法来处理不同尺度和旋转的热图之间的对齐。提出了一种基于曲面拟合的群体活动识别方法。我们提出的HM特征可以有效地嵌入组活动的时间运动信息,而提出的KPB和SF方法可以有效地利用热图的特征进行活动识别。实验结果证明了我们提出的算法的有效性。

英文摘要:

In this paper, a new heat-map-based (HMB) algorithm is proposed for group activity recognition. The proposed algorithm first models human trajectories as series of "heat sources" and then applies a thermal diffusion process to create a heat map (HM) for representing the group activities. Based on this heat map, a new key-point based (KPB) method is used for handling the alignments among heat maps with different scales and rotations. And a surface-fitting (SF) method is also proposed for recognizing group activities. Our proposed HM feature can efficiently embed the temporal motion information of the group activities while the proposed KPB and SF methods can effectively utilize the characteristics of the heat map for activity recognition. Experimental results demonstrate the effectiveness of our proposed algorithms.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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