arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1502.00256cs.CV
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聚类抽样匹配成分模板的人类再识别

Human Re-identification by Matching Compositional Template with Cluster Sampling

Sun Yat-Sen University(中山大学);University of California, Los Angeles(加州大学洛杉矶分校)

Yuanlu Xu, Liang Lin, Wei-Shi Zheng, Xiaobai Liu

摘要:

本文针对视觉监控中一个新提出的任务:通过匹配人体信息来重新识别远距离的人,并给出了几个参考实例。大多数现有的工作解决了这个任务,通过匹配的参考模板与目标个人,但往往遭受大的人类外观的变化(例如,不同的姿势/视图,照明)和高误报匹配所造成的连接,闭塞或周围的混乱。针对这些问题,我们构建了一个简单而富有表现力的模板,从一些参考图像的某个人,它代表了身体作为一个关节组装的组成和替代部分,并提出了一个有效的匹配算法与聚类采样。该算法在候选图中设计,候选图的顶点是匹配的候选者(即,一对源和目标身体部位),并且在两个步骤中迭代以实现收敛。(i)它基于身体部位之间的兼容和竞争关系生成可能的部分匹配。(ii)它确认部分匹配,以产生一个新的匹配解决方案,这是接受的马尔可夫链蒙特卡罗(MCMC)机制。在实验中,我们证明了我们的方法在三个公共数据库相比,现有的方法的优越性能。

英文摘要:

This paper aims at a newly raising task in visual surveillance: re-identifying people at a distance by matching body information, given several reference examples. Most of existing works solve this task by matching a reference template with the target individual, but often suffer from large human appearance variability (e.g. different poses/views, illumination) and high false positives in matching caused by conjunctions, occlusions or surrounding clutters. Addressing these problems, we construct a simple yet expressive template from a few reference images of a certain individual, which represents the body as an articulated assembly of compositional and alternative parts, and propose an effective matching algorithm with cluster sampling. This algorithm is designed within a candidacy graph whose vertices are matching candidates (i.e. a pair of source and target body parts), and iterates in two steps for convergence. (i) It generates possible partial matches based on compatible and competitive relations among body parts. (ii) It confirms the partial matches to generate a new matching solution, which is accepted by the Markov Chain Monte Carlo (MCMC) mechanism. In the experiments, we demonstrate the superior performance of our approach on three public databases compared to existing methods.

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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