slm_modified

This function create a desired ellipse automatically or manually which can be used for masking face...

参考Matlab提供的模块建立简化的三相锁相环的仿真模型，只保留必要的步骤，如abc-dqz只计算Vq，去除频率反馈模块和自动参数调整模块等。 建立单相锁相环的计算模型  简化单相锁相环的系统结构，保留必要的PI控制器等模块  验证并讨论输入信号频率在45-65Hz变化时设计的锁相环的动静态性能  仿真并分析三相输入信号包含谐波、不平衡和直流偏移时锁相环的锁相结果(Reference Matlab provides three-phase PLL module to establish a simplified simulation model, retaining only the necessary steps, such as abc-dqz counting only Vq, remove frequency feedback module and automatic parameter adjustment module.  simulation and analysis of the three-phase input signal contains harmonics, unbalance and DC offset PLL phase-locked Results)

to find the stability of the system using simulink file

Image processing .. this is most important application in image processing and communication engineering and have a lot of steps towards MATLAB controlling functions

对非平稳信号进行分段、截取，再对处理过后的短时信号做短时傅里叶变换，分析其频谱特性，并找到各个时间节点的频率特性，以便分析不同事件段内的声音特征。(The nonstationary signals are segmented, and then the interception, the short-time signal after processing the short-time Fourier transform, the analysis of the spectrum characteristics and frequency characteristics and find the different time node, in order to analyze the acoustic characteristics of different event period.)

Markov Chain model for regime switching time series

The following attachment contains code in Matlab to perform operations to digital signals.

此程序可以简单地解决0-1指派问题，可以分别求解目标函数最大值或最小值问题(This program can simply solve the 0-1 assignment problem, and can respectively solve the maximum or minimum of the objective function)

GPRMAX2.0中读取geo、out文件的命令。(file command to GPRMAX2.0 in using to read geo&out file.)

这是一个comsol转化成的matlab程序，可以做出z轴的循环(This is a comsol into the matlab program, you can make the z-axis of the loop)