| 城市地图数据合并的平差方法 |
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| 引用本文： | 顾赟.城市地图数据合并的平差方法[J].测绘与空间地理信息,2011,34(2):214-216,219. |
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| 作者姓名： | 顾赟 |
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| 作者单位： | 上海市测绘院,上海,200129 |
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| 摘 要： | 地图数字合并是指在同名实体匹配的基础上,调整相关地物实体的几何位置,以实现同一地区不同来源地图数据库的集成和信息融合.城市地图数据有其自身独有的特点,因此在对城市地图数据库进行合并时,不仅要消除不同图形空间数据之间的差异,还需要精确保持实体原有形状.本文提出了一种基于最小二乘平差的合并算法,采用附带条件的间接平差方法,...
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| 关 键 词： | 城市地图 图形调整合并 最小二乘平差 |
Adjustment Approach for City Map Data Merging |
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| GU Yun.Adjustment Approach for City Map Data Merging[J].Geomatics & Spatial Information Technology,2011,34(2):214-216,219. |
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| Authors: | GU Yun |
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| Institution: | GU Yun(Surveying and Mapping Institute of Shanghai,Shanghai 200085,China) |
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| Abstract: | The combination of digital map refers to adjusting the position of geometric features associated entity on the basis of the matching entity,which can achieve the information integration and map fusion from the different sources but same region.City map data has its own unique characteristics,therefore when merging the city map database,we not only need to eliminate the differences among various graphic spatial data,but also need to keep the original shape of the entity precisely.This paper proposed a merging algorithm based on the least squares adjustment,which used the indirect conditional adjustment methods to seek after the merger of the entity adjust space coordinates through the iteration.Finally,an experiment was conducted,which demonstrated that this algorithm can not only greatly eliminate the differences of the spatial data,but also keep the original shape of the entity in a preferable manner. |
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| Keywords: | city map graphics consolidation least squares adjustment |
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