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题名: Segmentation of human body parts using deformable triangulation
作者: Jun-Wei Hsieh
Chi-Hung Chuang
Sin-Yu Chen
Chih-Chiang Chen
Kuo-Chin Fan
贡献者: 國立臺灣海洋大學:資訊工程學系
NTOU:Department of Computer Science and Engineering
关键词: Abnormal event detection
behavior analysis
body part segmentation
video surveillance
日期: 2010-05
上传时间: 2017-11-14T07:26:11Z
出版者: IEEE Trans. on Systems, Man and Cybernetics, Part A
摘要: Abstract:This paper presents a novel segmentation algorithm to segment a body posture into different body parts using the technique of deformable triangulation. To analyze each posture more accurately, they are segmented into triangular meshes, where a spanning tree can be found from the meshes using a depth-first search scheme. Then, we can decompose the tree into different subsegments, where each subsegment can be considered as a limb. Then, two hybrid methods (i.e., the skeleton-based and model-driven methods) are proposed for segmenting the posture into different body parts according to its occlusion conditions. To analyze occlusion conditions, a novel clustering scheme is proposed to cluster the training samples into a set of key postures. Then, a model space can be used to classify and segment each posture. If the input posture belongs to the nonocclusion category, the skeleton-based method is used to divide it into different body parts that can be refined using a set of Gaussian mixture models (GMMs). For the occlusion case, we propose a model-driven technique to select a good reference model for guiding the process of body part segmentation. However, if two postures' contours are similar, there will be some ambiguity that can lead to failure during the model selection process. Thus, this paper proposes a tree structure that uses a tracking technique so that the best model can be selected not only from the current frame but also from its previous frame. Then, a suitable GMM-based segmentation scheme can be used to finely segment a body posture into the different body parts. The experimental results show that the proposed method for body part segmentation is robust, accurate, and powerful.
關聯: 40(3), pp.596-610
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/44068
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