ch2example22Sfun

利用常用的四阶龙格-库塔公式求初值再分别利用米尔恩公式和改进的亚当斯方法及常用的四阶龙格-库塔公式求解其余的数值解，并计算它们与精确解的误差(By use of Runge- Kutta formula and then find the initial value, respectively, and improved the formula by Milne Adams methods and commonly used Runge- Kutta formula to solve the rest of the numerical solution, and calculate their error with the exact solution)

人眼识别英文版，基于梯度特征提取，模板匹配实现人眼识别(eye detection)

自由空间的路径损耗模型，有对数距离路径损耗和对数正态阴影路径损耗(Free space path loss model with logarithmic distance path loss and shadow lognormal path loss)

sigmoid函数及其导函数的介绍推导和应用等等(sigmoid text)

带转矩内环的转速磁链闭环矢量控制仿真系统，大家共同学习(The speed with torque inner loop flux vector control simulation system, we learn together)

说明：  To find the encryption of an image.

经验小波变换结合EMD的自适应性和小波分析的理论框架,Gilles提出了一种称为经验小波变换(EWT)的自适应信号处理方法.其核心思想是通过对信号的Fourier谱进行自适应划分,建立合适的小波滤波器组来提取信号不同的AM-FM成分.(Empirical wavelet transform)

小波包分析提取振动信号中的特征频率，利用自然梯度算法，有详细的注释。( Wavelet packet analysis to extract vibration signal characteristic frequency, Use of natural gradient algorithm, There are detailed notes.)

主要应用于图像分割，基于分水岭分割算法的图像分割(The ICON partitions)

M=8,fc=6/T时的8个波形，和M=4的PSK通信系统的Monte Carlo仿真(M = 8, fc = 6/T at the time of 8 waveforms, and M = 4 of PSK communication systems Monte Carlo simulation)