改进傅里叶解相法的像增强管像质参数测量的研究  

Improved Algorithm for Measurement of Image Intensifier Based on FTP

作　　者：王定钧[1] 曹益平[1] 

机构地区：[1]四川大学电子信息学院,成都市硕士研究生610064

出　　处：《工具技术》2013年第5期58-61,共4页Tool Engineering

基　　金：国家863高技术研究发展计划(2007AA01Z333);国家重大专项(2009ZX02204-008);四川省学术和技术带头人培养基金(07GRC-01)

摘　　要：根据基于傅里叶解相法的像增强管多参数测量方法,提出对像质参数相位进行完整解相,分离放大率和畸变的测量参数的方法。本方法避免了因为在像质参数测量过程中过多的使用统计平均,而提出完整解相,给出了测量参数的精确数学表达,从而能够快速并精确地测量像增强管的中心放大率、边缘放大率以及桶形畸变值等像质参数,成功恢复了像增强管引入的畸变分布,提高了测量的有效性。实验结果证明方法可行。According to improving the Fourier transform phase measurement algorithm, a new image quality measuring method of image intensifier is presented, which requires to analyze the image quality parameters completely. This method is to separate magnification part and the distortion part, so it can avoid the error introduced by plethoric using of statistical averaging. By using the accurate equation, the central magnification, the edge magnification and the value of barrel - shaped distortion can be measured quickly and precisely, the distribution of distortion can be recovered. Simulated experiments have proved the validity of this method. ＂

关 键 词：像增强管 傅里叶变换解相法 相位测量 放大率 桶形畸变 局部畸变 

分 类 号：TG8[金属学及工艺—公差测量技术] TB22[天文地球—大地测量学与测量工程]