中文说明：通过检测二维小波变换的模极大值点可以确定图像的边缘点，利用小波变换的多尺度性用于图像的边缘检测
English Description：
The edge points of the image can be determined by detecting the modulus maxima of the two-dimensional wavelet transform. The multi-scale feature of the wavelet transform is used to detect the edge of the image