a-dct-watermark

PSO算法简单、易实现且参数较少，现已被应用于函数优化、神经网络训练、模糊系统控制以及其它遗传算法的应用领域(PSO algorithm is simple, easy to implement and less parameters, have been applied to function optimization, neural network training, fuzzy system control and other applications of genetic algorithms)

fastica对3幅混合图像继续分离，对分离结果进行计算pi值，psnr值的计算程序。有一定参考价值。(fastica continue for three mixed image separation, separation results calculated the value of pi to calculate the value of the program psnr. There is a certain reference value.)

Natural frequency of shell bubble compare to free bubbles

classifier ID3 to classify data

绘制柯西雪花曲线，直接运行koch（x）就可以得到x阶的曲线。(Draw koch snow curve.Run koch(x) directly and you can get the x step koch snow curve)

说明：  计算序列x=[3 0 2 1 3 4 6] 和y=[3 0 -2 1 -3]的线性卷积(Calculation sequence x = [3 0 2 1 3 4 6] and y = [3 0-2 1-3] the linear convolution)

读取信号，信号滤波，信号降噪，信号分帧，信号求时间差。(Read signal, signal filtering, signal noise, signal framing, find the time difference signal.)

经验模态分解法程序emd，运行准确，适合进行hilbert-huang变换的人员使用(a precess of emd)

matlab for copula 最全的copula代码(matlab for copula)

说明：  该程序主要是仿真单极性码和双极性码在加性高斯白噪声信道中的理论误码率和实际误码率，并做一比较(The program is mainly simulation of single polar code and bipolar code theory in additive white gaussian noise channel bit error rate and the actual error rate, and make a comparison)