说明：  文章借助最大熵定理的基本思路构建 DEM 地形信息量分级判定模型, 可客观获得连续型栅格地形数据在信息量计算上最优分级,为有效估算 DEM地形信息量 提供科学依据。
(The basic idea of ​ ​ the article with the maximum entropy theorem to build DEM terrain amount of information classification decision model can be objective to obtain the the continuous raster terrain data is calculated in the amount of information on the optimal classification, as a valid estimate of DEM terrain amount of information to provide a scientific basis.)