| 基于像元角点搜索的栅格矢量化 |
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| 引用本文： | 张鹏林,庞宇,吕志勇.基于像元角点搜索的栅格矢量化[J].应用科学学报,2014,32(6):611-616. |
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| 作者姓名： | 张鹏林 庞宇 吕志勇 |
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| 作者单位： | 1. 武汉大学遥感信息工程学院，武汉430079
2. 西安理工大学计算机科学与工程学院，西安710048 |
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| 基金项目： | 国家自然科学基金(No.41331175, No.61202172)资助 |
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| 摘 要： | 遥感影像图斑转化为面状矢量具有重要意义，而现有矢量化算法在“孔洞”处理方面存在不足. 为此，提
出了基于像元角点搜索的栅格矢量化算法，首先利用像元的角点建立轮廓点集合，然后由连接轮廓点的弧段集合
中的非共享弧段形成有效弧段集，最后通过搜索有效弧段集形成闭合边界. 实验表明，该方法可以有效解决带有孔
洞多边形的快速矢量化问题.
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| 关 键 词： | 矢量化 角点 边界搜索 区域分割 |
| 收稿时间： | 2014-07-12 |
| 修稿时间： | 2014-09-23 |
Vectorization Based on Pixel Corner Searching |
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| ZHANG Peng-lin,PANG Yu,Lü Zhi-yong.Vectorization Based on Pixel Corner Searching[J].Journal of Applied Sciences,2014,32(6):611-616. |
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| Authors: | ZHANG Peng-lin PANG Yu Lü Zhi-yong |
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| Institution: | 1. School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, China;
2. School of Computer Science and Engineering, Xi’an University of Technology, Xi’an 710048, China |
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| Abstract: | Vectorization is an important technique in remote sensing image processing. The existing vectoriztion
algorithms are mostly insufficient on vectorization of holes. This paper proposes an algorithm based
on corner pixels. A set of pixels consisting of corners is first established, and another set (valid arc set) with
arcs connecting contour points also established for contour search. A closed contour of an object is defined by
searching valid arc sets according to certain rules. Experimental results show validity of the proposed algorithm
in solving the problem of holes. |
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| Keywords: | vectorization corner border search region segmentation |
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