一种基于链码的线特征提取方法  

Line features extraction method based on chain code

作　　者：赵丽科 宋伟东[1] 王竞雪[1] 

机构地区：[1]辽宁工程技术大学测绘与地理科学学院,辽宁阜新123000

出　　处：《测绘科学》2014年第9期107-110,共4页Science of Surveying and Mapping

基　　金：国家自然科学基金(41101452;40901222);武汉大学测绘遥感信息工程国家重点实验室开放基金(11I02);高等学校博士学科点专项科研基金资助课题(20112121120003)

摘　　要：文章针对目前线特征提取算法中不规则曲线不能得到有效逼近的问题,提出一种基于链码的线特征提取方法。它采用V0到V7的顺序对边缘二值图像进行链码跟踪,然后通过距离判断去逼近物体的边缘线特征。实验结果表明,该算法不仅可以高效准确提取出物体的直线边缘,而且能用直线段精确地逼近不规则物体的边界。Current line feature extraction algorithm can not effectively approximate the irregular curve, therefore a line features extraction method based on chain code was proposed in the paper. According to the chain code order of V0 ～V7 it follows the tracks of the edge of the binary image, and then approximates the edge of the line features by the distance determination. The experimental results showed that the pro- posed algorithm could not only extract the straight edge of the objects, but also use straight segment to approximate the boundary of the irregular objects efficiently and accurately.

关 键 词：链码 边界 线特征提取 

分 类 号：P28[天文地球—地图制图学与地理信息工程]