计算机科学 ›› 2012, Vol. 39 ›› Issue (7): 270-275.

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基于RJMCMC的视觉多目标跟踪算法

周维,许海霞,郑金华   

  1. (湘潭大学信息工程学院 湘潭 411105)
  • 出版日期:2018-11-16 发布日期:2018-11-16

Multi-object Visual Tracking Based on Reversible Jump Markov Chain Monte Carlo

  • Online:2018-11-16 Published:2018-11-16

摘要: 研究了基于MCMC的多目标跟踪算法。针对MCMC迭代过程中抽样置信度低以及不能进行有效迭代的问题,提出一种新的基于RJ MCMC的视觉多目标跟踪算法。给定观测量,将跟踪问题建模为状态量的最大后验估计(MAP)、关于MAI〕的先验与似然的佑计。借助匹配阵给出了目标先验建议分布,设计了4种马氏链可逆运动方式;似然度量采用随空间加权的颜色直方图匹配衡量。MCMC抽样过程中的状态由MS迭代产生,而不是随机走生成。基于似然度量导出了MS迭代式。实验结果及定量分析评佑结果说明了本算法的有效性。

关键词: 视觉多目标跟踪,可逆跳转马尔科夫链蒙特卡洛,贝叶斯推理,Mean-shift

Abstract: MCMC-based multi-object visual tracking was investigated here. To improve the confidence of sampling and perform the iteration effectively,a new approach to multi-object visual tracking was proposed based on reversible jump Markov chain Monte Carlo (RJMCMC) sampling. Uiven image observation, the tracking problem was formulated as computing the MAP (maximum a posteriori) estimation .The prior proposal distribution of object was developed with the aid of association match matrix,and four types of reversible and jump moves were designed for Markov chains dy- namics. I}he likelihood distribution measure was presented via position-weighted colour Kist match between reference objects and candidate objects. The state updating was generated from mean-shift(MS) iteration,rather than from random walk in the MCMC sampling. Experimental results and quantitative evaluation demonstrate that the proposed approach is effective for challenge situations.

Key words: Visual mufti-objects trakcing,Reversible jump Markov chain Monte Carlo(RJMCMC) sampling,I3ayes inferencc, Mcan-shift

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