摘要
针对目前平面圆形标靶在大角度倾斜或存在数据部分缺失时无法准确提取中心的问题,提出一种边缘拟合算法,即基于回光强度结合边缘点搜索算法自动提取平面标靶的圆形边界,然后对边界点进行拟合用于确定标靶中心。实验表明,该方法简单易行,在工作条件较好时提取精度与仪器自带软件提取值一致;当存在大角度倾斜或数据缺失时,该方法仍可以准确提取出标靶中心的坐标。
In the case of big inclination angle, traditional methods extracting the center of circular planar target in TLS do not work and a part of data will miss. A new algorithm based on edge fitting is proposed. The firstl step is to extract automatically edge points of circular plane target, The second step is to fitt spatial circle by edge points and determine the center of the target. Experimental results show that this algorithm is simple and feasible, the extracting accuracy is consistent with that by software in suitable conditions;In the case of big inclination angle or missing data, this algorithm can also determine accurately the coordinates of target center.
出处
《大地测量与地球动力学》
CSCD
北大核心
2014年第3期173-177,共5页
Journal of Geodesy and Geodynamics
