shopdemo

用Baum-Welch算法来迭代估计一个隐马尔科夫模型（HMM）的初始状态概率分布以及其状态转移概率矩阵。其中文件有mainfile_B_W.m为主函数，Baum_Welch.m为Baum-Welch算法迭代函数，Forward_variable.m与Backward_variable.m与Gamma_variable.m与Ksi_variable.m是需要计算的四种因子，B_pdf.m为混淆散射概率密度函数。(It s Baum-Welch algorithm for iteratively estimating the initial states probability distribution and state transition probability matrix. In the folder, "mainfile_B_W.m" is the main function, and "Baum_Welch.m" is the iteration Baum-Welch function. Also these four file "Forward_variable.m " "Backward_variable.m" "Gamma_variable.m" "Ksi_variable.m" are used for calculating crucial factors. "B_pdf.m" is the emission probability distrubution function.)

无限长的序列也往往可以用有限长序列来逼近。对于有限长的序列我们可以使用离散傅立叶变换（DFT）。DFT是对序列傅立叶变换的等距采样。是序列傅立叶变换的等距采样。 本源码是对DCT、DFT、FFT的matlab实现(Infinitely long sequence is often a long sequence with limited approximation. For the finite length of the sequence we can use the discrete Fourier transform (DFT). DFT is a sequence of equidistant sampling Fourier transform. Is a sequence of equidistant sampling Fourier transform. The source is the DCT, DFT, FFT in matlab implementation)

正弦信号通过幅度调制（AM,DSB,SSB）所得到的时域波形及频域波形(AM,DSB,SSB waveforms in frequency- domain and Time domain)

matlab种子扫描算法的实现，共有两个文件，都是matlab的m文件，已经试过了，可以正常运行(Seeds of MATLAB scanning algorithm, a total of two documents, are matlab m file, have tried, can be normal operation)

图像增强技术属于数字图像预处理的范畴, 直方图均 衡化和规定化处理是图像增强技术中的基本方法。(Image enhancement technology areas are digital image preprocessing, histogram equalization and provides image enhancement processing technology is the basic method.)

matlab函数的绘图技巧，具有重要的意义，适合初学者(matlab function mapping techniques, is of great significance, for beginners)

Edge detection using gradient and laplacian operator

人脸识别的matlab程序，不过是一个主程序界面，要是用的话还得调用很多的子程序(Face recognition matlab program, but is a main program interface, if used, then have to call a lot of subroutines)

FRFT 具体的程序，有关天处理LFM信号的，特别好。(FRFT specific procedure, the days of LFM signal processing, particularly good.)

MATLAB 编程（第二版） 《MATLAB Programming for Engineers》的中文版，最好的编程教材。 (MATLAB Programming for Engineers （Second Edition） )