中文说明： 实现了图像的加水印，去噪，加噪声等功能，ICA（主分量分析）算法和程序，包括随机梯度算法，相对梯度算法，小波包分析提取振动信号中的特征频率，包含优化类的几个简单示例程序，这是第二能量熵的matlab代码。
English Description：
Realize the image watermarking, denoising, noise and other functions, ICA (principal component analysis) algorithm and program, including random gradient algorithm, relative gradient algorithm, wavelet packet analysis to extract the characteristic frequency of vibration signal, including optimization class of several simple example program, this is the second energy entropy of matlab code.