实现了图像的加水印，去噪，加噪声等功能，包括随机梯度算法，相对梯度算法，包括AHP，因子分析，回归分析，聚类分析。- Realize image watermarking, de-noising, plus noise and other functions, Including stochastic gradient algorithm, the relative gradient algorithm, Including AHP, factor analysis, regression analysis, cluster analysis.