实现了图像的加水印，去噪，加噪声等功能，AHP层次分析法计算判断矩阵的最大特征值,包括随机梯度算法，相对梯度算法。- Realize image watermarking, de-noising, plus noise and other functions, Calculate the maximum eigenvalue judgment matrix of AHP, Including stochastic gradient algorithm, the relative gradient algorithm.