摘要
等高线矢量化完成后的数据质量检查是等高线数据库建设的关键环节。本文提出了一种简便、实用的等高线数据库后处理的质量控制方法。文章深入分析了天山公路GIS等高线数据库建设过程中错误的表现形式,分析了错误来源,并基于地形三维阴影图和地形图快速检测和修改这些错误,保证了等高线数据库的质量和精度。对其他GIS工程基础地理信息数据库建设具有参考价值和借鉴意义。
It is an important step to check data quality after contours have been drawn. This article proposes one kind of easy and practical method on Post-processing for Contour database. The article has thoroughly analyzed the wrong manifestation during constructing contour database for the Tianshan Road GIS, and analyzed the wrong source. Then it lastly inspects and revises error based on Terrain three dimensional shadow photographs and topographic diagram, which guarantee the quality and precision for contour database. This method has reference value and model significance.
出处
《测绘科学》
CSCD
北大核心
2008年第3期22-24,共3页
Science of Surveying and Mapping
基金
西部交通建设科技项目《天山公路工程地质病害研究》之《国道217线独山子-库车段(天山公路)沿线遥感信息提取与公路建设地理信息系统研制》
