两次滤波散斑错位技术在扭率测量中的应用

Application of Double-filtering Speckle shearing in twist Measurement

提出两次滤波散斑错位技术。采用该技术可在扭率测量中消除斜率条纹的干扰,从而得到具有极高对比度的纯扭率条纹。

In this paper,the double-filtering speckle shearing method used for twist measurement is proposed.The pure twist fringes of objects can be obtained by us- ing the double-filtering technique.