文章基本信息

标题：Geometry of circular vectors and pattern recognition of shape of a boundary
本地全文：下载
作者：Calyampudi R. Rao
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1998
卷号：95
期号：22
页码：12783-12786
DOI：10.1073/pnas.95.22.12783
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：This paper deals with pattern recognition of the shape of the boundary of closed figures on the basis of a circular sequence of measurements taken on the boundary at equal intervals of a suitably chosen argument with an arbitrary starting point. A distance measure between two boundaries is defined in such a way that it has zero value when the associated sequences of measurements coincide by shifting the starting point of one of the sequences. Such a distance measure, which is invariant to the starting point of the sequence of measurements, is used in identification or discrimination by the shape of the boundary of a closed figure. The mean shape of a given set of closed figures is defined, and tests of significance of differences in mean shape between populations are proposed.
关键词：distance geometry/shape recognition