| 数字化地图的纠正模型及其优选 |
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| 引用本文： | 游扬声,王新洲,史文中. 数字化地图的纠正模型及其优选[J]. 地理空间信息, 2005, 3(6): 46-48,54 |
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| 作者姓名： | 游扬声 王新洲 史文中 |
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| 作者单位： | 重庆大学,土木学院,重庆,040024;武汉大学,测绘学院,湖北,武汉,430079;武汉大学,测绘学院,湖北,武汉,430079;香港理工大学,香港,九龙红磡区 |
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| 摘 要： | 为了减弱或消除由于图纸变形、扫描数字化变形引起的GIS空间数据的系统误差,需要对数字化地图进行纠正。本文讨论了数字化地图纠正的概念模型,相似变换、仿射变换、多项式回归模型均是描述该概念模型的数学模型;重点研究了纠正模型的检验和优选问题,并用实例考察了纠正模型的优选及纠正的效果。
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| 关 键 词： | 数字化地图 纠正 检验 |
| 文章编号： | 1672-4623（2005）06-0046-03 |
| 收稿时间： | 2004-10-08 |
| 修稿时间： | 2004-10-08 |
Correction Model of a Digital Map and Its Optimization |
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| YOU Yangsheng,WANG Xinzhou,SHI Wenzhong. Correction Model of a Digital Map and Its Optimization[J]. Geospatial Information, 2005, 3(6): 46-48,54 |
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| Authors: | YOU Yangsheng WANG Xinzhou SHI Wenzhong |
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| Affiliation: | 1.The School of Civil Engineering, Chongqing University, Chongqing 040024, China; 2.School of Geomatics and Geodesy, Wuhan University, Wuhan 430079, China; 3.Hongkong Polytechnic, Hung Horn, Kowlcon, Hongkong |
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| Abstract: | A digital map should be corrected for elimilating the systematic error of spatial data in GIS caused by the deformation of the map and scanning digitizing. This paper discussed the conceptual model of the correction of a digital map, it consolidated conceptually all of the mathematical modes such as similarity transformation?affine transformation and polynomial regression. This paper focused on test and optimization of the correction models'research. An example showed the process of optimization of a correction model and its effect. |
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| Keywords: | digital map correction test |
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