视角无关的动作识别-人机交互与媒体集成研究所-清华大学.pdf

ISSN 1000-9825, CODEN RUXUEW E-mail: jos@ Journal of Software , Vol.19, No.7, July 2008, pp.1623− 1634 DOI: 10.3724/SP.J.1001.2008.01623 Tel/Fax: +86-10 © 2008 by Journal of Software . All rights reserved. ∗ 视角无关的动作识别 + 祐 黄飞跃 , 徐光 (普适计算教育部重点实验室,清华信息科学与技术国家实验室(筹),清华大学计算机科学与技术系,北京 100084) Viewpoint Independent Action Recognition + HUANG Fei-Yue , XU Guang-You (Key Laboratory of Pervasive Computing of the Ministry of Education, Tsinghua National Laboratory for Information Science and Technology, Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China) + Corresponding author: E-mail: huangfeiyue@ Huang FY, Xu GY. Viewpoint independent action recognition. Journal of Software, 2008,19(7):1623−1634. /1000-9825/19/1623.htm Abstract : Action recognition is a popular and important research topic in computer vision. However, it is challenging when facing viewpoint variance. So far, most researches in action recognition remain rooted in view-dependent representations. Some view invariance approaches have been proposed, but most of them suffer from some weaknesses, such as lack of abundant information for recognition, dependency on robust meaningful feature detection or point correspondence. To perform viewpoint and subject independent action recognition, this paper proposes a representation called “Envelop Shape” which is viewpoint insensitive. “Envelop Shape” is easy to acquire from silhouettes using two orthogonal cameras. It makes full use of two cameras’ silhouett