数字散斑相关法测量微小位移的模型与算法研究

RESEARCH ON MODEL AND ARITHMETIC OF DSCM FOR TINY DISPLACEMENT MEASUREMENT

采用数字散斑相关法测量微小位移时,物体表面被扫描区域内某一点附近的微小子集的运动通常看成具有刚体性质的运动。针对刚体平面运动位移的测量,提出了相应的模型与算法,然后通过实验数据和程序运算进行了验证。

When we use digital speckle correlation method to measure tiny displacement,the movement of a tiny subset around a point inside the scanning area of a deformed body is usually regarded as a rigid body movement.Aimed at the measurement of the displacement of a rigid body movement,model and arithmetic is put forward,which is successfully validated by experiment data and procedure operations.