At first,the fractal dimension is extracted from the original image and special gray image for the rough classification,and then the multi-fractal dimension is used for further classification.

• 首先通过计算原始图像和特征灰度图像的分形维数实现第一次的粗分类提取,然后采用多重分形奇异谱方法进一步完成了细分。