由于地图数字化数据在采集和制图过程中存在系统误差的影响,导致其空间位置精度较低。在实测较高精度的GPS控制点的基础上,基于Kullback-Laible(KL)信息量改进的赤池信息标准(AICc)来选择最佳的转换模型,实现地图数字化数据的几何纠正,从而达到提高其位置精度的目的。
The manual digitized data from paper maps has a lower positional accuracy.In this paper,with the help of GPS control points with a higher accuracy,the digitized source data is corrected using the transformation models,and the best optimal model is determined using the refined Akaike information criterion(AICc) based on Kullback-Laible information.The result shows that the transformation model can improve the positional accuracy of the digitized data.