低对比度非均匀干涉条纹图预处理研究  

The study of pre-processing methods for the low contrast and uneven interferogram

作　　者：范志刚[1] 李润顺[1] 左保军[1] 李洪兵[1] 

机构地区：[1]哈尔滨工业大学电子科学与技术系,哈尔滨150001

出　　处：《光学技术》2002年第1期41-43,共3页Optical Technique

基　　金：黑龙江省自然科学基金资助课题

摘　　要：干涉条纹的预处理是干涉检测技术的重要步骤 ,但低对比度、非均匀干涉条纹图的处理是比较困难的。采用分区直方图调整法 ,根据条纹图的实际情况设置分区大小 ,并进行直方图调整 ,然后经过二值化、平滑、细化、整形等处理 ,得到单像素条纹图 ,为后续的条纹定位和物理量反演打下良好基础。It is important to pre-process the interferogram for the interferometry Usually it's difficult to pre-process the low contrast and uneven interferogram The paper offer a method to pre-process it by the subarea histogram, in which the size of subarea is decided artificially Then the single-pixel fringe can be obtained by binary imaging, smoothing, thinning and mending, which will be prepared for the coming orientating the fringe and unwrapping the tested parameters It has been proved that the methods are effective to solve the given problems

关 键 词：条纹图 低对比度 非均匀 预处理 干涉检验 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] O436.1[自动化与计算机技术—计算机科学与技术]