fast-method

主成分分析 pca函数代码，用于数据的降维、压缩、去噪、主成分分析等方面。。。(principal component analysis)

线性规划算法，包含多个算法，ppt课件，适合matlab工作者参考(Linear programming algorithm, contains more than one algorithm, ppt courseware for matlab workers Reference)

基于粒子群优化算法（PSO）的类间方差估计（Otsu）(Based on Particle Swarm Optimization (PSO) of the between-class variance estimation (Otsu))

初学者最想看到的简单的源码，实现最基本的功能！希望适合所有新人！(Beginners most want to see the simple source to achieve the most basic function! New hope for all!)

this source code is chp6ex11 matlab link

可以动态调节运行环境的参数，能量谱分析计算,基于kaiser窗的双谱线插值FFT谐波分析。( Can dynamically adjust the parameters of the operating environment, Energy spectrum analysis and calculation, Dual-line interpolation FFT harmonic analysis kaiser windows.)

FFA（快速折叠算法），实现噪声中的周期信号检测，及周期估算(FFA (fast folding algorithm), the realization of the periodic signal in noise detection, and cycle estimates)

kmeans的程序，用欧式距离对80个对象进行分类(a kind of procedure ralated to the algorithm of Kmeans )

信号由三个频率分别为0.01，0.1，0.2的正弦信号组成。 (1)作信号的连续小波变换。 (2)自己选择小波基数，对信号进行多尺度分解，将每一个正弦信号分开。 (3)重建原信号。 (Signal from the three frequencies were 0.01,0.1,0.2 sinusoidal signals. (1) continuous wavelet transform for signal. (2) choose the wavelet base, multi-scale decomposition of signals, a sinusoidal signal of each separate. (3) reconstruction of the original signal.)

image resize, gray, average filter, gaussian filter