Abstract
The authors developed a simple and general displacement field measuring method using a technique for image analysis. The proposed method, named CCIP method, requires no target installed in the model to measure displacement field on sand. A newly developed correction method for distortion of image needs no longer information than the coordination of four datum points covering the analyzed zone. These features can reduce labor in the preparation of model sand and the analysis of displacement fields. An evaluation of accuracy and two examples are presented in this paper. The results show that the method can measure deformations in sand within an accuracy of 2 pixels of the images employed.
