白光散斑相关法的统计分析研究

Research on White Light Digital Speckle Image Correlation Statistic Analysis

白光数字散斑相关方法是现代数字图像处理技术与光学测量相结合的产物。这一方法彻底摆脱了特定测量环境的要求,避开了由条纹图作为信息载体而直接从物体表面微观结构及表面散斑场这些信息载体中提取变形信息,具有较大的优越性。应用白光数字散斑相关方法对描述试件进行了实验测试,得到了令人满意的结果。

White light digital speckle image correlation is the combination between digital image process and optical measuring.Digital image correlation has the advantage of casting off special condition and the carrier of fringe figure.In contrast,it directly distills the information of distortion from microcosmic structure and speckle field on the surface of objects.The author of this article carried out an experimental test with the method of digital white light speckle image correlation,which achieved a satisfactory result.