现代电子技术2016，Vol.39Issue(24)：92-95,4.DOI:10.16652/j.issn.1004-373x.2016.24.022
基于不变矩的制动开关图像匹配方法
Braking switch image matching algorithm based on invariant moment
摘要
Abstract
A matching method of variable step size based on Hu invariant moments is proposed to overcome the disadvan⁃tage of time⁃consuming positioning of the braking switch in TFDS detecting system. The method consists of coarse matching and precise matching. The variable step size calculation formula for horizontal matching was designed according to the shape of the breaking switch. The matching values of the template windows in template image and detection image are calculated with Hu in⁃variant moments. The corresponding step size is selected according to the weight of the matching values. Those points whose matching values are greater than the given threshold are taken as the pre⁃selected points to get the optimal matching points in the neighborhood of each pre⁃selected point and then save them into the maximum sequence to search the maximum value. The region where the breaking switch lies in is located finally. The experimental results show that this algorithm has certain invariant properties in the aspects of scaling variation,translation and rotation,improves the matching speed greatly,and has obtained a good matching effect.关键词
制动开关/图像匹配/Hu不变矩/变步长Key words
braking switch/image matching/Hu invariant moment/variable step size分类
信息技术与安全科学引用本文复制引用
吴波,封松林,艾成汉,杨林杰,孙国栋,吴曦..基于不变矩的制动开关图像匹配方法[J].现代电子技术,2016,39(24):92-95,4.基金项目
国家自然科学基金项目（51205115）；国家电网科技项目 （）
