文献类型：期刊文献

英文题名：Shape Descriptor-Based Local Contour Profile Registration and Measurement for Flexible Automotive Sealing Strips

作者：Li, Jianhua[1];Du, Zhengchun[2];Wang, Yan[3]

机构：[1]East China Univ Sci & Technol, Dept Comp Sci & Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Shanghai Jiao Tong Univ, Sch Mech Engn, 800 Dongchuan Rd, Shanghai 200240, Peoples R China;[3]Georgia Inst Technol, Woodruff Sch Mech Engn, 813 Ferst Dr NW, Atlanta, GA 30332 USA

年份：2018

卷号：18

期号：2

外文期刊名：JOURNAL OF COMPUTING AND INFORMATION SCIENCE IN ENGINEERING

收录：;EI(收录号：20190406414062);WOS:【SCI-EXPANDED(收录号:WOS:000431781400006)】；

基金：National Natural Science Foundation of China (Grant Nos. 51175343, 51527806, and 60703026).

语种：英文

外文关键词：shape descriptor; local contour profile; registration; vision-based measurement; flexible product

摘要：For vision-based measurement, there are few research or professional tools for local contour positional errors of flexible automotive rubber strips. To support the automatic measurement of contour positional errors, a novel local contour registration and measurement method based on shape descriptors is proposed. In this method, a shape descriptor is proposed to find correspondence between a reference local contour and a desired local contour. First, a shape descriptor that includes the shape representation and restrictions of the local contour is extracted from the reference contour. Second, several tolerable shape descriptors for a desired actual local contour are constructed by adding some loosening factors to the ideal descriptor, and an angular similarity-based searching strategy is used to find the best actual local contour. Finally, from the matched local point sets, a quantitative calculation step provides the desired deviation values. This method is implemented in a sealing strip cross section measurement system, and numerous cross-sectional profiles are tested. The experimental results verify the stability and effectiveness of the proposed method. Important progress toward the automatic measurement of flexible products is demonstrated.