利用MATLAB的图像处理和数值计算功能得到颗粒物边界的二值图像；编制MATLAB程序，统计一系列以不同像素数量为边长的正方形块覆盖二值图像时的个数，根据像素数量和正方形块个数之间的关系，确定图像的计盒维数。-Image processing and numerical calculation using MATLAB function obtain pellets boundary of the binary image　preparation of the MATLAB program, statistics, the number of a series of different number of pixels as the side length of square block when the binary image is covered, according to the number of pixels and a square block of a The relationship between the number of box-counting dimension determine the image.