说明：  将原始图象分成eXe大小的子块，找出每块中的最大值和最小值，计算差值并量化，再用rXr大小的子块计算分形值
(original image will be divided into eXe size of the block to identify every piece of the maximum and minimum, margin calculations and quantified, and then rXr size of the block-value calculation Fractal)