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Subpixel Location of the Center of Laser Spot Based on Spatial Moments
Author(s): 
Pages: 521-523
Year: Issue:  7
Journal: LASER & INFRARED

Keyword:  激光光斑亚像素空间矩算子;
Abstract: 首先介绍了火炮身管弯曲度测量系统的构成,然后阐述了基于二阶空间矩算子的亚像素定位算法,在此基础上对激光光斑中心位置进行高精度测量.先使用LoG算子把光斑边缘定位到单像素精度,然后使用二阶空间矩算子进一步细分,使边缘定位达到亚像素精度,再通过拟合计算得到光斑中心坐标.同时还进行了常用光斑中心定位算法与空间矩算法的对比实验,并对实验结果进行了定量分析.实验结果表明,二阶空间矩算法比常用光斑中心定位算法的定位精度有较大提高.
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