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张洁琳, 宿婧, 罗钟铉, 樊鑫. 基于热核信号的3D图形的分层匹配方法[J]. 计算机辅助设计与图形学学报, 2014, 26(12): 2142-2148.
引用本文: 张洁琳, 宿婧, 罗钟铉, 樊鑫. 基于热核信号的3D图形的分层匹配方法[J]. 计算机辅助设计与图形学学报, 2014, 26(12): 2142-2148.
Zhang Jielin, Su Jing, Luo Zhongxuan, Fan Xin. Hierarchical Matching of 3D Shape Based on Heat Kernel Signature[J]. Journal of Computer-Aided Design & Computer Graphics, 2014, 26(12): 2142-2148.
Citation: Zhang Jielin, Su Jing, Luo Zhongxuan, Fan Xin. Hierarchical Matching of 3D Shape Based on Heat Kernel Signature[J]. Journal of Computer-Aided Design & Computer Graphics, 2014, 26(12): 2142-2148.

基于热核信号的3D图形的分层匹配方法

Hierarchical Matching of 3D Shape Based on Heat Kernel Signature

  • 摘要: 3D图形稠密匹配是计算机视觉领域中的一个重要课题.为解决图形匹配中如何提高对拓扑噪声的鲁棒性和效率这2个基本问题,提出一种基于热核信号的3D图形分层匹配方法.首先利用热核信号函数检测特征点,并采用局部融合策略和最远点采样法适当去除冗余点和添加一些“辅助点”,实现特征点优化;然后在这些特征点集上构造热核信号描述子,并利用熵将特征点按显著性排序作初始层匹配,再通过特征点各层邻域的局部匹配最终实现3D图形由粗到细的稠密匹配.在TOSCA数据库上进行数值实验,并将文中方法与已有的经典方法进行比较的结果表明,该方法在一定程度上克服了拓扑噪声的影响,并且运算效率较高,更适应于实际应用.

     

    Abstract: 3Ddense matching is an important problem in computer vision.In this paper, we address the issues of robustness and efficiency in dense matching for 3Dshapes.We present a new strategy on choosing points and a hierarchical matching method upon heat kernel signature (HKS) robust to noise.The matching starts from a small subset of stable feature points which is significant to describe the topological characteristics of 3Dshapes, and performs from the coarse to fine according to the entropy on HKS features.The new hierarchical strategy renders fast matching, and meanwhile prunes those points of less discrimination by fusion method or adds a few “helpful points”by farthest point sampling for robust and accurate matching.Experimental results on the TOSCA data set demonstrate that the proposed method is more suitable for practical applications than state-of-the-art methods.

     

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