BEMD对图像进行分解，包络构造使用Delaunay三角剖分与三次插值，的的到分解的结果。输入：灰度bmp图像输出：imf1 imf2 imf3 残差 -BEMD decomposition of the image, envelope constructed using the Delaunay triangulation with cubic interpolation of the result of decomposition. Input: grayscale bmp image