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说明：  此代码为计算离散随机变量的熵、联合熵、条件熵、互信息的 Matlab 程序(This code is a matlab program for calculating entropy, joint entropy, conditional entropy and mutual information of discrete random variables)

this program is about denoising method by using DWT

floyd算法，可以根据这个改成各种代码，建模常用(floyd algorithm, based on the change of code, commonly used in modeling)

track算法 简单实用 易于掌握 适合初学者(sobel algorithm is practical and easy to master for beginners)

测试文本，选用著名的gettysburg这篇英文文本做为测试文本(Second, it fuses the features of the first singular value component and the second one, and then gets the complex feature vectors which reflect not only the statistic frequency but also the sequential structure of letters. In the end, the cosine similarity of texts is used to measure the similarity between the query and documents.)

matlab 灰度图像处理去噪 可以有效改变图像的边缘化问题(matlab grey processing )

matlab 频谱分析matlab 频谱分析matlab 频谱分析matlab 频谱分析matlab 频谱分析(matlab matlab spectrum analysis spectrum analysis spectrum analysis matlab matlab matlab spectrum analysis spectrum analysis)

Digital image and signal processing using matlab

MATLAB图像处理工具箱。有图像重建，图像压缩，图像恢复等代码。很有用(MATLAB Image Processing Toolbox. Are image reconstruction, image compression, image restoration code. Useful)

柯斯达斯实现载波恢复costas m-file (costas m-file costas m-file )