本文提出一种用数字图像技术直接处理双曝光散斑图,进行逐点分析而在视频监视器上产生杨氏条纹图,并由此测得位移大小与方向的新方法.

A pointwise analysis method, which is used for obtaining Young's fringe patterns and measuring the magnitudes and directions of displacements by directly processing double exposure specklegrams with digital image technique, has been presented. In this procesure. If a proper speckle recording arrangement and a suitable magnifying power of the microscopic objective are selected, a high measuring sensitivity and accuracy can be obtained.