【摘要】 提出了一种基于格网DEM的粗差检测及剔除方法,其基本思想是对每个表面上的点,在坡度上,高程或突变量引起的形状不连续,可能被怀疑有误差,通过坡度上每个点,应用坡度逼近或改变量来计算,考虑坡度变化的相对值,并以这些相对值计算一个统计值为判断该点合法性的阈值,使计算结果更为可靠。更多还原

【Abstract】 A method for detecting and culling away the gross error that is produced in the terrain due to discontinuity in a/height and vanish is proposed based on the grid DEM. By considering the relative value of slope change and using the impended or transformed value, the statistic value to judge the acceptance is calculated so that the calculated results could be more reliable.更多还原