d_014_statcom

说明：  如何用MATLAB的神经网络工具箱实现三层BP网络。仿真出一个3层的BP网络(如 ?斡肕ATLAB的神 ?网络 ???呦涫迪秩??鉈P网络 ??抡??鲆 桓 ? ?愕腂P网络)

digital wathch design in matlab

说明：  使用自编函数基于奇异值分解总体最小二乘法（svd-tls）实现AR模型谱估计 (The use of self-functions in general based on singular value decomposition least square method (svd-tls) to achieve AR model spectrum estimation)

简单的PCA主元分析源码，自己编写，亲测可用(Simple PCA principal component analysis of the source code, I have written pro-test available)

将PID算法与MAC算法相结合，使具有更好的控制效果。(The PID algorithm and MAC algorithm combined with better control effect.)

用MATLAB实现算术编码，并计算其平均码长，熵和编码效率(Achieved using MATLAB arithmetic coding, and calculates the average code length, entropy and coding efficiency)

s平面中直接形式到级联形式的转换 ％适合模拟滤波器的 ％C为增益系数 ％B为包含各bk的K乘3维实系数矩阵 ％A为包含各ak的K乘3维实系数矩阵 ％b为直接形式的分子多项式系数 ％a为直接形式的分母多项式系数(s-plane in the direct form and cascade form of analog filters suitable for conversion of C for the gain coefficient B to include the bk of the K x 3-dimensional real coefficient matrix A to include all of K by ak real 3-dimensional coefficient matrix b for direct forms of molecular polynomial coefficients a direct form of the denominator polynomial coefficients)

Wavelet denoising For using this code need to use signal toolbox and general toolbox in your matlab In the first part of this assignment, we asked to obtain a (black-and-white) digital image of size 512 by 512 and then generate noisy image by adding a Gaussian noise but under the condition of having SNR=20dB by select the suitable value of variance for Gaussian noise formula. Second step is performing wavelet denoising using the hard thresholding (Use the db 6 for four levels) in the condition of finding the optimal thresholding value of T in terms of the SNR obtained. It means that, we should find the highest SNR value by finding the suitable value for threshold. Then we asked to do the same process but this time using soft thresholding. Finally for the last part of question one, we should compare the results of the obtained SNR with the recommendations of 3*sigma for the hard thresholding and 3/2*sigma for the soft thresholding.

说明：  用matlab编写的程序，实现区域的分裂和合并，并带有图像(Matlab prepared using the procedures of the division and regional merger with images)

说明：  matlab实现的对样本视频的混合高斯模型的检测代码(Sample video detection code Gaussian mixture model)