The deformation correcting mathematical model adopted in the paper is the same as the mathematical model of correcting image point coordinates system errors in aerial surveying.
该文采用的变形纠正数学模型与航测中改正像点坐标系统误差的数学模型相同。
C or F value, the X and Y coordinates of the center of a pixel at the up-left corner of the image, can be measured according to characteristic point in topographic map.
值为栅格图像左上角像素中心在地图上的X，Y坐标，其值可以根据特征点在地形图中的坐标量测获得。
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