QAM_4

说明：  功率谱分析的MATLAB实例，经典谱估计的几种方法介绍(Power spectral analysis of the MATLAB examples, classical spectral estimation of several ways to introduce)

kernel光滑滤波matlab源程序代码。fun为kern函数，在matlab文件中提供了四个函数：均匀函数，二次函数，一阶导数估计和二阶导数估计，详细请见算法文档。(kernel smooth filter matlab code)

DCT and Image Compression In the JPEG image compression algorithm, the input image is divided into 8-by-8 or 16-by-16 blocks, and the two-dimensional DCT is computed for each block. The DCT coefficients are then quantized, coded, and transmitted. The JPEG receiver (or JPEG file reader) decodes the quantized DCT coefficients, computes the inverse two-dimensional DCT of each block, and then puts the blocks back together into a single image. For typical images, many of the DCT coefficients have values close to zero these coefficients can be discarded without seriously affecting the quality of the reconstructed image. The example code below computes the two-dimensional DCT of 8-by-8 blocks in the input image, discards (sets to zero) all but 10 of the 64 DCT coefficients in each block, and then reconstructs the image using the two-dimensional inverse DCT of each block. The transform matrix computation method is used.

日本九州大学的机械工程学院的 Xiong Xiaogang 于 2012 年提出一种更易于实现、同时有能够描述所有摩擦力现象的摩擦力模型，其基于一个微分方程和两个代数方程。本程序是其Simulink实现，非常好用。模型原理请参考：(In 2012, Xiong Xiaogang of the school of mechanical engineering, Kyushu University, Japan proposed a much easier way. The friction model, which can describe all friction phenomena, is based on a differential equation and two algebraic equation. This program is its Simulink implementation, very good use. Model principles, please refer to:Xiong X, Kikuuwe R, Yamamoto M. A differential-algebraic multistate friction model[M]. Simulation, Modeling, and Programming for Autonomous Robots. Springer Berlin Heidelberg,2012)

用matlab编程实现彩色图像的局部分割，下载后解压即可(Programming using matlab partial color image segmentation, can be downloaded after the decompression)

应用Matlab程序打开一个二进制的数据文件(Matlab application program opens a binary data file)

说明：  这个确实有用 大家可以任意下载 完全免费的(this really useful we can download any free)

MATLAB程序，其中包含cholesky 分解和QR分解，都是典型程序。大家下载来看看吧。(MATLAB program, which includes cholesky decomposition and QR decomposition, are typical procedures. We downloaded a look)

已知一个二维数据，y=f(x), 想使得这个数据绕y轴旋转而成为一个旋转对称的三维数据(A two-dimensional data is known, y=f (x), to make the data around the Y axis and become a rotationally symmetric 3D data)

用MATLAB仿真谱估计中的ESPRIT算法(MATLAB simulation spectrum estimation using the ESPRIT algorithm)