种子填充法在物体表面位移场测量中的运用

Application of Seeds Filling Method in the Surface DisplacementMeasurement of Workpiece

针对工程实际大构件而产生大位移,以图像处理技术为依托,以建筑物或者大型构件表面的斑形标记为载体,用种子填充方法产生标号图像,分别计算各个标号图像区域的重心;然后根据每幅图片各个相应区域的重心坐标就可以得到随时间变化的斑形标记重心的位移场.从而达到测定物体形变的目的.运用图像处理的方法来测量物体的位移场.由于所采用的斑形标记比散斑颗粒大得多,所以该方法可以实现远距离测量,达到省时省力,节约检测费用的目的.

The target of this application is to use digital image processing method to measure the displacement of big structure,such as bridge,high building.The area center of the gravity of spots painted on the surface is gained by seed filling methods, and the displacement field of structure surface is gained by the area center of gravity coordination .