云纹图象计算机处理技术的进展及其应用

Advance and applications of processing technics by the computer for moire' patterns

本文对1987年至今国内外光测力学条纹图,主要是云纹图象的计算机采集、处理和力学量提取技术的进展进行了回顾,包括利用通用图象处理程序、直接利用灰度,用付利叶变换对条纹图进行分析,引入相移技术提高灵敏度、利用采色编码提取力学量,以及建立在云纹图特点基础上的新的图象处理技术等;分析了它们各自的优缺点,适用范围和存在的问题,讨论了它们在科究和工程测试中的应用前景。

In this paper,the internal,international advance and application of collect,process and recover of mechanics data by the computer for fringe pattern of photomechanics (the chief parts are moire' patterns) are looked back.Here include: Processing procedure of pattern in common ;The fringe datas arc collected,here,utilization the grey scale immediately;FFT are used in moire' pattern :The phase-shifting tcachnique are imported to raise the sensitivity;The colour specification arc used to collection the data of mechanics;And a new technique of pattern procedure which is builded on basis of moire' pattern's feature,etc.; Here,the strong and weak ,suitable field and existent question act all are considered;At last, their applied prospects in scientific research and engineering measurement are discussed.