entropy

说明：  基于计算机视觉的手势识别研究——硕士论文(Computer vision-based gesture recognition- pp)

能量熵的计算，小波包分析提取振动信号中的特征频率，借鉴了主成分分析算法（PCA）。( Energy entropy calculation, Wavelet packet analysis to extract vibration signal characteristic frequency, It draws on principal component analysis algorithm (PCA).)

说明：  用matlab采集音频，这只需要你的电脑有录音设备，适用于新的R2018a及以上版本(Use matlab to collect audio. It only needs your computer to have a recording device, which is suitable for the new r2018a and above)

说明：  平面波展开法 2D Phononic Cystals eigvalue 正方格子(Plane wave expansion method 2D Phononic Cystals eigvalue)

MATLAB实现K均值聚类，自己编的，可用，不用系统函数。(MATLAB realization of K-means clustering, own, use, instead of the system functions.)

本代码对于应用广泛的LMS和NLMS的各种性能进行了系统的比较，并MATLAB仿真分析比较了两种算法的性能。(The code for the widely used LMS and NLMS variety of performance comparison of the system and MATLAB simulation analysis and comparison of the performance of the two algorithms.)

利用梯度投影法解决有约束的目标函数优化问题(Gradient projection method for solving constrained optimization problem objective function)

利用GA來模擬鳥群尋找食物的行為，方法就是找尋距離食物最近的鳥之周圍區域及根據自己本身飛行的經驗判斷食物的所在(The use of GA to simulate the behavior of the flock in search of food, the methodology is to find the nearest bird food from around the region and according to their own experience of flying to judge the location of food)

说明：  自适应中值滤波器的滤波方式和传统的中值滤波器一样,都使用一个矩形区域的窗口Sxy,不同的是在滤波过程中,自适应滤波器会根据一定的设定条件改变(即增加)滤窗的大小,同时当判断滤窗中心的像素是噪声时,该值用中值代替,否则不改变其当前像素值,这样用滤波器的输出来替代像素(x,y)处(即目前滤窗中心的坐标)的值。(Adaptive Median Filter for filtering methods and the same as the traditional median filter, use a rectangular area of the window Sxy, different in the filtering process, the adaptive filter in on certain Presumed Conditions change (an increase of ) filter window size, while when the judge is the filter window center pixel noise, the median value is used instead of, or does not change its current pixel value, so that the output with a filter to replace the pixels (x, y) Office (that is, coordinates of the current filter window centered) values.)

说明：  利用小波分析具有时频局部化特性和熵能对系统状态进行表征的特点，将小波分析和熵结合起来，定义了3种小波熵（小波能谱熵、小波时间熵、小波奇异熵），并给出其算法，揭示了这3种小波熵对系统故障表征的机理，对两种理论信号和基于PSCAD/EMTDC仿真的输电线路故障信号(Based on the characteristics of time-frequency localization of wavelet analysis and entropy energy to represent system state, three kinds of wavelet entropy (wavelet energy spectrum entropy, wavelet time entropy and wavelet singular entropy) are defined by combining wavelet analysis and entropy, and their algorithms are given. The mechanism of these three kinds of wavelet entropy for system fault characterization is revealed. The results show that the three kinds of wavelet entropy can be used to characterize system fault Road fault signal)