music

The NCT includes 4 External validity indices and 8 internal validity indices, and the sub-routine validity_Index.m is designed to use them. This tool is suitable for the research work such as the performance comparison of different indices on estimation of the number of clusters, algorithm design by improving part codes of this toolbox. i) External validity indices when true class labels are known: Rand index Adjusted Rand index Mirkin index Hubert index ii) Internal validity indices when true class labels are unknown: Silhouette Davies-Bouldin Calinski-Harabasz Krzanowski-Lai Hartigan weighted inter- to intra-cluster ratio Homogeneity Separation iii) Others Error rate (compared with true labels) System Evolution: it is used to estimate the number of clusters and give separable degrees between clusters.

matlab编写的视频关键帧提取程序，可自动从视频中提取帧，提取第几帧可在程序中自行设定，另附有批量处理视频的主函数。(matlab prepared video key frame extraction procedures can be automatically extracted from video frames to extract the first few frames can be set in the program, batch processing video attached with the main function.)

中介真值程度度量，基于中介真值程度度量的图像分割利用最小二乘法进行拟合多元非线性方程，可以动态调节运行环境的参数。( The true extent of the value of the intermediary measure, measure the true extent of the agency based on the value of image segmentation Multivariate least squares fitting method of nonlinear equations, Can dynamically adjust the parameters of the operat)

接收信号为加噪声的QPSK信号，通过球的维纳解，实现系统辨识，达到滤波的目的。(Received signal is the QPSK signal plus noise, the Wiener solution through the ball, to achieve system identification, to achieve the purpose of filtering.)

UniformNoise & RayleighNoise & UniformNoise

Performance Evaluation of WiMAX (802.16) Using Different Encoding Schemes

说明：  in this matlab code we have used a new technique for imge processing -segmentation-

用C++实行数值插值运算并用matlab绘图(With C++ Implement numerical interpolation matlab computing and graphics)

此程序主要是通过使用小波达到图像文件压缩的目的，可以比较不同的小波函数和压缩次解压缩后图像文件的差异，注意图像是二维的处理时使用二维的小波函数(This process is mainly through the use of wavelet compression to achieve the purpose of image files, you can compare different wavelet functions and extract the compressed time difference after the image file, pay attention to the handling of two-dimensional image is the use of two-dimensional wavelet function)

说明：  对心音信号进行BT功率谱估计及切比雪夫1滤波的matlab程序，可粗略提取心音频率(PSD BT chey1 matlab)