摘要
介绍了一种提取Fabry-Perot(法布里-帕罗)干涉条纹圆心点坐标和条纹半径的新方法。首先对干涉图像依次进行二值化处理,对所得到的条纹强度曲线进行均平滤波和自适应滤波,根据条纹灰度值强度余弦函数分布的特点,对条纹灰度值数据进行最小二乘法拟合,获得条纹强度峰值坐标,通过精确的迭代算法,进而获得Fabry-Perot干涉条纹圆心点的坐标;然后再对干涉条纹进行圆周积分,从而可以确定每级Fabry-Perot干涉条纹的半径长度。该方法可提高计算精度,减小计算误差。
A new method of processing the Fabry-Perot interference fringes to acquire the center coordinates and the radius of the fringes is introduced.Firstly the interferogram is compressed in 2-gray level images;then after average filtering and adaptive filtering to the fringe intensity curves,according to the characteristics of cosine distribution of fringe intensity,by fitting the intensity data with using the least square method,the peak position of each fringe intensity distribution and the coordinates of the ...
出处
《光学技术》
CAS
CSCD
北大核心
2009年第4期499-501,共3页
Optical Technique
基金
国家863计划资助项目
