QRgivens

This code perform the DCT and quantization on all the channels without any sub-sampling and for the compression of color images, they are first converted to the YCbCr color format and vice versa, use the function rgb2ycbcr and ycbcr2rgb.

QDPSK Communication Performance simulation

简单的异步电动机模型，包含坐标变换，电压电流变换(A simple model of asynchronous motor)

qpsk over rayleigh channel

some figures generated in the book using Matlab are also provided as script files for learning experience

说明：  matlab函数，很多有用的matlab函数。希望对大家的学习有用。(matlab function, a lot of useful matlab functions. Hope to learn useful.)

单极性PWM控制方式Simulink仿真，很简单，便于电力电子初初学入门者学习，里面还加了一个模拟滤波器，也很简单，但想法非常重要 (Unipolar PWM control mode Simulink simulation is very simple, easy beginner beginners to learn the beginning of the power electronics, which also added an analog filter is also very simple, but the idea is very important)

本文提出了一种滤波源码来简化图像抠图中的一个大型稀疏矩阵算法，从而优化了算法，提高了效率。(This paper presents a filter in the source code to simplify the image matting, a large sparse matrix algorithm, to optimize the algorithm and improve efficiency.)

Allows graphical objects to be dragged in a figure

matlab code for lag/lead compensater of dc motor