J4 ›› 2014, Vol. 41 ›› Issue (6): 160-166.doi: 10.3969/j.issn.1001-2400.2014.06.027

• Original Articles • Previous Articles     Next Articles

Non-rigid object tracking using joint matching of local features

YU Wangsheng1;HOU Zhiqiang1;TIAN Xiaohua1;ZHA Yufei2   

  1. (1. Information and Navigation College, Air Force Engineering University, Xi'an  710077, China;
    2. Aeronautics and Astronautics Engineering College, Air Force Engineering University, Xi'an  710038, China)
  • Received:2013-07-05 Online:2014-12-20 Published:2015-01-19
  • Contact: YU Wangsheng E-mail:xing_fu_yu@sina.com

Abstract:

To the problem of non-rigid object tracking in video sequence, an efficient tracking algorithm based on joint matching of local features is proposed. The feature matching problem based on key points is translated into the optimization problem of balance assignment, and completed via joint matching of features under the maximization of holistic similarity. The tracking process is as follows. Firstly, local key points of the object template and current searching area are detected and described using the information on their neighborhoods. Then, the key points are marched via the proposed joint matching strategy, and the right matching pairs are picked out. Finally, the object's location and size are calculated according to the matching results, and the tracking result of the current frame is outputted. Experimental results indicate that the proposed algorithm is robust to object’s non-rigid deformation, and can cope with the complex background change to obtain a stable tracking result.

Key words: visual tracking, local feature, joint matching, balance assignment, non-rigid object

CLC Number: 

  • TP.391