J4 ›› 2015, Vol. 42 ›› Issue (3): 161-167+172.doi: 10.3969/j.issn.1001-2400.2015.03.027

• Original Articles • Previous Articles     Next Articles

Improved quadratic-form metric for  histogram distance measurement

YU Wangsheng;TIAN Xiaohua;HOU Zhiqiang;LIU Bin   

  1. (Information and Navigation College, Air Force Engineering Univ., Xi'an  710077, China)
  • Received:2014-03-02 Online:2015-06-20 Published:2015-07-27
  • Contact: YU Wangsheng E-mail:xing_fu_yu@sina.com

Abstract:

In order to improve the discrimination of histogram distance measurement, the problem of histogram distance measurement based on the quadratic-form metric is researched. Firstly, the traditional quadratic-form metric and its disadvantage are briefly reviewed. Then, an improved quadratic-form metric for histogram distance measurement is proposed by modifying the traditional quadratic-form distance function and the correlation matrix. Finally, the fast computation of the proposed metric and the measurement of high dimension histograms are discussed. The proposed metric takes a full consideration of the correlation between histogram bins, which increases its discrimination. Experiments based on shape matching, image retrieval and visual tracking validate the effectiveness of the proposed metric and its superiority over the traditional ones.

Key words: shape matching, image retrieval, visual tracking, histogram distance