| 基于专题分类图的栅格矢量数据转换 |
| |
| 引用本文： | 谭炳香.基于专题分类图的栅格矢量数据转换[J].林业科学研究,1993,6(2):216-221. |
| |
| 作者姓名： | 谭炳香 |
| |
| 作者单位： | 中国林业科学研究院资源信息研究所 北京 |
| |
| 摘 要： |
|
| 关 键 词： | 栅格数据 矢量数据 地理信息系统 |
| 收稿时间： | 8/7/1991 12:00:00 AM |
A Algorithm for the Extraction of Polygonal Representation from a Thematic Classification Map |
| |
| Tan Bingxiang.A Algorithm for the Extraction of Polygonal Representation from a Thematic Classification Map[J].Forest Research,1993,6(2):216-221. |
| |
| Authors: | Tan Bingxiang |
| |
| Institution: | The Research Institute of Forest Resource Information Techniques, CAF Beijing 100091 |
| |
| Abstract: | A simple and improved algorithm is developed which extracts the polygonal contour representation from a raster format thematic classification map. The design adopts a 2×2 window which is used to scan and extract the boundary pixels of adjacent polygons along each pair of lines of the map. Contours are thus generated as a list of (X, Y) coordinate pairs, together with the attributes of the left and right regions at both sides of the boundary point. In the process of line segment tracking and polygon tracking, various attributes and topological relations are established. The structure, attribute and topological information of the vector data obtained are integrated and standardized, and they are easy to inquire and operate, and make the postprocessing flexible. The algorithm described in this paper has been implemented on a 386 microcomputer. |
| |
| Keywords: | raster data vector data geographic information system |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《林业科学研究》浏览原始摘要信息 |
| 点击此处可从《林业科学研究》下载免费的PDF全文 |
|
