IDW距离反比加权方法，基于小波变换的数字水印算法matlab代码，抑制载波型差分相位调制。- IDW inverse distance weighting method, Based on wavelet transform digital watermarking algorithm matlab code, Suppressed carrier type differential phase modulation.

分数阶傅里叶变换计算方面,利用最小二乘算法实现对三维平面的拟合，利用matlab针对图像进行马氏距离计算 。- Fractional Fourier transform computing, Least-squares algorithm to fit a three-dimensional plane, Using matlab to calculate the Mahalanobis distance for the image.