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。
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.
出处
《地理空间信息》
2005年第6期46-48,54,共4页
Geospatial Information
