航空影像上圆图斑定位方法研究
Surveying and Mapping of Geology and Mineral Resources（2007）
Abstract
介绍了航空影像上圆图斑边缘提取和中心定位的方法,即以航空影像上圆图斑的灰度、梯度为基础,对剖面线上跃阶特征点进行提取,得到圆图斑的边界点对,然后利用最小二乘法计算3个剖面点对的圆心坐标和半径,定位精度在0.44~2像素之间,说明利用该方法对航空影像上圆图斑中心进行定位,精度较高。
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Key words
feature extraction,central positioning,cross section line,boundary point pair,aerial image,circle figure spot,section algorithm
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