计算机应用研究2017，Vol.34Issue(6)：1900-1904,1908,6.DOI:10.3969/j.issn.1001-3695.2017.06.069
基于区域面积比的几何不变量构造算法
Construction algorithm of geometric invariant based on area ratio
摘要
Abstract
Geometric invariant is the abstraction and generalization of geometrical information from the object,it solves the recognition problems generated by the target movement such as rotation or deformation.To solve the issue of error increase and low efficiency in feature extraction for geometric invariant algorithms,this paper proposed a construction algorithm of geometric invariant based on area ratio.First,the algorithm computed the coordinate positions of a centroid and a convex complement area's centroid of a gray image after binaryzation.Then,it used a division strategy to partition the gray image to some areas according the line passes through these two centroids.Finally,it achieved the area ratio vector of geometric invariant by this algorithm.The experiments in the fish database and coil-100 of Columbia University show that invariant extracted by the proposed algorithm satisfies affine invariance.Meanwhile,under a certain range of interference (erase,smear and occlusion),the invariant features extracted from the object image have discrimination ability.关键词
模式识别/特征提取/几何不变量/凸包/凸补区域Key words
pattern recognition/feature extraction/geometric invariant/convex hull/convex complement area分类
信息技术与安全科学引用本文复制引用
邢昌元,熊忠阳,李月涵,吴雪刚..基于区域面积比的几何不变量构造算法[J].计算机应用研究,2017,34(6):1900-1904,1908,6.基金项目
国家自然科学基金资助项目(61190122) （61190122）
重庆市教委科学技术研究项目(KJ15012028) （KJ15012028）
长江师范学院校级科研项目(2015XJXM30) （2015XJXM30）
