摘要
根据Freeman H提出的直线链码必须满足的3个准则及吴立德的直线链码判定算法,建立了级直线、级折点的概念,给出了直线链码的判定定理。在此基础上,实现了点阵图形的矢量化算法。此算法的优点是,处理速度快,精度也很高。
The main problem in computer-scan-input of line drawings is to extract vectors from raster image. In this article, the concepts of graded-turning-point and graded-straightline are established and the theorem of testing if a chain-code is of a line is provided. Also the algorithm for extracting vectors from raster image is given, which has the advantages of high speed and accuracy.
出处
《北京工业大学学报》
CAS
CSCD
1991年第1期7-12,共6页
Journal of Beijing University of Technology
关键词
模式识别
直线
链码
级直线
级析点
pattern recognition, graded-turning point, graded-straight- line, chain-code
