In this paper, the digitizing errors are analyzed.
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地形图数字化误差造成地物几何形变,采用测量平差的理论方法可以减弱形变。
The digitalization errors of topographic map result in geometry change for the objects on the earth. We can reduce geometry change by means of measuring adjustment.
The statistical model with a time series analysis are discussed. And some examples are given to simulate the effects of these errors on the digitized data accuracy.