Based on the obtainment of grain contours by using wavelet edge detector and the level set method,high curvature points of the plane curve were calculated as the prospective points.

• 在利用小波变换技术和边缘连接技术得到的陶瓷复合材料晶粒闭合边缘的基础上,根据晶粒轮廓的特点,研究了其特征型值点的合理提取方法。