Based on the measure of image grayscale,singularity of each pixel in the image and its multifractal spectrum are calculated,accordingly,the edge information of image is given.

• 该方法通过定义在图像灰度级上的测度,计算图像中每一个像素点的奇异性和它的多重分形谱,然后根据多重分形谱,提取图像的边缘信息。