| 棕版地形图上等高线的自动提取和批量赋值 |
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| 引用本文： | 张宝雷,宋孟强,周万村. 棕版地形图上等高线的自动提取和批量赋值[J]. 测绘科学, 2006, 31(4): 81-83 |
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| 作者姓名： | 张宝雷 宋孟强 周万村 |
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| 作者单位： | 中国科学院水利部成都山地灾害与环境研究所,成都,610041;中国科学院研究生院,北京,100039;中国科学院水利部成都山地灾害与环境研究所,成都,610041 |
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| 基金项目： | 国务院三峡建设委员会办公室资助项目“三峡工程生态环境动态与实时监测(SX[2002]004)”子课题“三峡地区1:5万生态环境监测(SX[2002]00401)”，中科院知识创新方向性项目“长江中下游土地利用覆被变化和信息系统”(KZCX2-SW-319-01)部分成果 |
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| 摘 要： | 地形等高线在地学研究中有重要意义,地形图上等高线的自动提取和赋值是地理信息系统中的一个重要课题。本文引入图像分割技术,将全要素棕版地形图尺度分割生成图斑后,再通过在红、绿、蓝各波段上设置平均属性范围,对地形等高线进行了自动提取。借助图像处理技术对不同类型的等高线断点进行了连接。通过编写程序对获取的地形等高线进行交互批量赋值,最终较好地解决了等高线提取中的间断、交叉和粘连等问题。
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| 关 键 词： | 棕版地形图 地形等高线 图像分割 自动提取 自动赋值 |
| 文章编号： | 1009-2307(2006)04-0081-03 |
| 修稿时间： | 2005-06-25 |
The auto-extraction and batch-assignment of contours based on brown edition of topographic maps |
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| ZHANG Bao-lei,SONG Meng-qiang,ZHOU Wan-cun. The auto-extraction and batch-assignment of contours based on brown edition of topographic maps[J]. Science of Surveying and Mapping, 2006, 31(4): 81-83 |
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| Authors: | ZHANG Bao-lei SONG Meng-qiang ZHOU Wan-cun |
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| Abstract: | Topographical contours have important meanings in geographical study,and their automatic extraction and assignment are important subjects in geographical information system.This paper introduces image segmentation technology in the extraction process to extract the contours on the segmented brown editions of topographic maps,through setting up the average attribute range on the red,green and blue wave band respectively and taking the unique shape of contours as reference.Different types of spoilt parts are rejoined through image treatment technology.The interactive batch assignment to the contours is down through programming.Finally,such problems as spoilt parts,crossed and adhesive lines during the extraction of contour were well solved. |
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| Keywords: | relief map of brown printing plate topographical contour segmentation automatic extraction automatic assignment |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
