边界链码 meaning in English

border chain code
boundary chain code

In this paper , a boundary chain code tracing method is used to extract the contour information , the process of thinning , de noising , and encoding for contour are realized at one time , so a 1d string represented the 2d contour shape information is obtained , then a contour matching method based on chain code is presented
摘要首先利用边界链码的跟踪技术，提取出二维碎片的轮廓信息，同时对轮廓线进行细化、去噪和编码处理，得到二维轮廓线的一维链码信息描述，并在此基础上提出一种基于链码的二维碎片轮廓匹配方法。