利用最小二乘算法实现对三维平面的拟合，阵列信号处理的高分辨率估计，实现了图像的加水印，去噪，加噪声等功能。- Least-squares algorithm to fit a three-dimensional plane, High-resolution array signal processing estimates, Realize image watermarking, de-noising, plus noise and other functions.

实现了图像的加水印，去噪，加噪声等功能，最终的权值矩阵就是滤波器的系数，包括随机梯度算法，相对梯度算法。- Realize image watermarking, de-noising, plus noise and other functions, The final weight matrix is ??the filter coefficient, Including stochastic gradient algorithm, the relative gradient algorith