地形图在扫描过程中不可避免地会产生误差，这些误差使图像发生变形，为了使图像能满足实际应用，就必须对图像进行校正，拼接。通过Photoshop CS5的部分命令，初步校正扫描地形图，后期利用ArcGIS 10软件对初步校正的地形图进行配准校正，提高了图形拼接效果和位置精度。%Errors could be inevitable in the topographic map scanning process , and these errors may de-form the image , in order to meet the practical application of the image , the image must be corrected and splicing .Through commands of Photoshop CS 5 , topographic maps scanning could be adjusted;the latter using the ArcGIS 10 software , registration and correction of the preliminary topographic maps could be done, and graphics splicing effects and positional accuracy also could be improved .
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