invcongrad

1. this function is for image (width=176, hight=144) only. but you can modify the related value to fit yours. 2. it is used to evaluate the motion vector between the Nth image and N-1th image. 3. it use Three Steps search algorithm. 4. this algorithm finds the closest pixel near the original pixel in three times.(1. This function is for image (width = 176, hight = 144) only. But you can modify the related value to fit yours.2. It is used to evaluate the motion vector between the Nth image and N-1th image.3 . it use Three Steps search algorithm.4. this algorithm finds the closest pixel near the original pixel in three times.)

image quantisation technique

说明：  压缩包中包含两个matlab文件： remez_frf.m 为使用remez算法设计旁瓣1/f衰减滤波器程序； myfrf.m 为其中使用到的惩罚函数； frf的意思是频率响应函数。(Compression matlab package contains two files: remez_frf.m algorithm designed for the use of remez sidelobe 1/f attenuation filter procedures myfrf.m use for which the penalty function frf mean frequency response function.)

设计一个按照时间抽取的基2快速傅里叶变换（基2FFT-DIT）。输入倒位序，输出自然顺序。(Design is taken in accordance with the time radix-2 fast Fourier transform the (base 2FFT-DIT). Enter the inversion sequence, the output of the natural order.)

用matlab 7.0编写的滑模变结构仿真的例子。(S-function for continuous state equation function [sys,x0,str,ts]=s_function(t,x,u,flag) switch flag, Initialization case 0, [sys,x0,str,ts]=mdlInitializeSizes Outputs case 3, sys=mdlOutputs(t,x,u) Unhandled flags case {2, 4, 9 } sys = [] Unexpected flags otherwise error([ Unhandled flag = ,num2str(flag)]) end mdlInitializeSizes function [sys,x0,str,ts]=mdlInitializeSizes sizes = simsizes sizes.NumContStates = 0 sizes.NumDiscStates = 0 sizes.NumOutputs = 3 sizes.NumInputs = 1 sizes.DirFeedthrough = 1 sizes.NumSampleTimes = 0 sys=simsizes(sizes) x0=[] str=[] ts=[] function sys=mdlOutputs(t,x,u) x11d=sin(pi*t/2) x21d=cos(pi*t) x31d=1 sys(1)=x11d sys(2)=x21d sys(3)=x31d )

光纤光栅包层不同时，纤芯基模折射率与波长之间的关系(the relationship between the refractive index of the core fundamental mode fiber grating wavelength between cladding)

智能天线波束形成各种算法，程序比较多，有问题请联系：zgl-311@163.com(smart antenna beam-forming algorithms, procedures are more problems please contact : zgl-311@163.com)

学好数字图像处理，学好matlab，学好vc++,怎么能少了位图转灰度图像c++源码。(you will succeed.)

avi视频转换为jpg序贯图片，应用于matlab2014a进行图像处理。(Avi video converted to JPG sequential images, image processing is applied to matlab2014a.)

关于无穷大电源的一个仿真模型，模型很简单，但是很实用。(About the infinite power of a simulation model, the model is very simple, but very practical.)