中国光学Issue(3)：389-395,7.DOI:10.3788/CO.20140703.0389
散斑干涉相位条纹图的频域滤波处理
Frequency domain filtering for phase fringe patterns of digital speckle pattern interferometry
摘要
Abstract
In order to solve the problem of serious influence of much noise in the phase fringe patterns of digit -al speckle pattern interferometry on the result and accuracy of phase unwrapping , an effective method of stripe sine/cosine decomposition combined with frequency domain low-pass filtering is introduced in this paper , and the high precision filter of phase fringe patterns of digital speckle pattern interferometry is realized .Basic idea of this method is that phase fringe patterns is mapped into two patterns by the sine /cosine function before the phase image filter processing , and then is synthesized into phase fringe patterns through frequency domain fil-ter.This decomposition frequency domain filtering method can retention phase jump information effectively when filtering .Experimental results show that compared with the traditional image noise reduction method ,this method can filter out the speckle noise in images better on the basis of reserving “rush” image informa-tion, and it is simple and effective , which solves the problem of loss from 10%to 40%for phase fringe pat-terns gray level information when traditional filtering methods are used in stripe phase fringe patterns .关键词
干涉测量/散斑干涉/相位图/频域滤波/噪声Key words
interference measure/digital speckle pattern interferometry/phase map/frequency domain filte-ring/noise分类
数理科学引用本文复制引用
王永红,李骏睿,孙建飞,刘佩,杨连祥..散斑干涉相位条纹图的频域滤波处理[J].中国光学,2014,(3):389-395,7.基金项目
国家自然科学基金资助项目（No．51075116，No．51375136）；安徽省国际科技合作计划资助项目（No．12030603012）；教育部留学回国人员科研启动基金资助项目 （）
