中文摘要：

针对纤维材料图像分割后提取的目标图像孔洞之间粘连明显、不封闭、分布不均匀和大小不一等特点，采用常规链码与带方向链码两种跟踪手段，运用链码差实现了对边缘的方向性表示．通过结合三点圆拟合算法，对目标孔洞边缘进行了补全，再用链码跟踪所获得的边缘信息对拟合边缘进行修正，实现了对目标孔洞区域的有效定位．

英文摘要：

In order to make edge detection into practice, synthesis tracing method is proposed. And a three-points breaks in edges. The edge achieved from tracing provides Experiments show that the edges with adhesive or breaks the nondirectional and directional chain code circle curve fitting algorithms is used to fill the the pixels for edge revision after curve fitting. extracted effectively by the algorithms.