The accuracy of flood area is mostly dependent on the contour interval of map, accuracy of digitizing map, accuracy of DEM, and interval of GRID, detecting resolution of pixels.
对于采用本方法计算淹没区，准确性受地形图等高距大小、数字化采集精度、数字地面模型（DEM）高程精度以及格网间隔大小、像素探测分辨率等因素的影响。
Experimental results show that the proposed method has greatly improved the efficiency and the accuracy of digitizing the two symbols.
实验结果显示提议的方法大大地改善其效能和数化二个符号的准确性。
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