A Color Photoelastic Analysis System
彩色光弹性干涉影像分析系统

A color photoelastic analysis system was developed to analyze the photoelastic images and get the stress distribution or stress trace.CCD camera and image grabber were adopted to grab digital images into computer in the color photoelastic analysis system.By processing the grabbed images,one can get object borders,isochromatic and isoclinic contours.Based on these data, one can draw the trace of the main stress and can do two or three dimensional analysis.This paper introduced the whole design of the system and the key problems,such as color image process and main stress trace drawing etc.Color images provide more information than gray images,so more precise results can be obtained from color images.This system can not only define fringe orders according to the color information directly and then calculate the stress,but also can divide one color image into three gray images and then process them.In this way,the well developed methods for processing gray photoelastic images can be utilized.