中文说明： 用于建立主成分分析模型，实现了图像的加水印，去噪，加噪声等功能，内含心电信号数据及运用MATLAB写的源代码，最终的权值矩阵就是滤波器的系数，利用最小二乘算法实现对三维平面的拟合，有PMUSIC 校正前和校正后的比较。
English Description：
Principal component analysis was used to build the model, realize Image Watermarking, noise reduction, plus features such as noise, including ECG data and use MATLAB to write source code, the final weighting coefficients of the matrix is to filter using least square fitting algorithm for three dimensional plane, PMUSIC calibration before and after correction.