fftlowpass

实现retinex中的msr，关于雾天图像处理。(Msr in achieving retinex，Image processing on the fog)

傅里叶描述子，具有平移，旋转不变性，适合目标识别(Fourier descriptors, translation, rotation invariance, for target recognition )

一幅大小为256×256的256级灰度图像（每像素8bit） 如果图像的各个像素之间是统计独立的，求该图像的信息熵 -离散无记忆信源 如果图像的各个像素之间不是统计独立的，求该图像的信息熵 -图像像素的概率分布模型(A 256 gray scale image (8bit per pixel) with a size of 256 x 256 If each pixel of the image is statistically independent, the information entropy of the image is calculated Discrete memoryless source If each pixel of the image is not statistically independent, the information entropy of the image is calculated Probability distribution model of image pixels)

人脸检测：可自动检测人脸，速度还可以吧！(Face Detection : can automatically detect faces and can also speed!)

很好的mATLAB代码，利用最大交叉熵，确定迭代次数，完成pcnn脉冲耦合神经网络的图像分割，效果很好(MATLAB good code,the use of maximum cross entropy, determine the number of iterations, complete PCNN image segmentation,result is good.)

N年前上数字图像课时写的实验报告和程序，用滤波反投影（Filter Back Project，FBP)法重建图像。(Report and source code for data image restore experiment, using FBP.)

图像处理中经常要用到的提取方向特征的gabor滤波程序(gabor filter map)

采用拉普拉斯金字塔的图像融合程序，完成图像融合功能，需采用高于matlab2009的matlab(the image fusion source code using lap pyramid, you have to use the matlab version later than 2009.)

经过改进的快速的双边滤波器算法，主要是先下采样，然后进行滤波，最后再进行上采样(Improved bilateral rapid filter algorithm is the first major down-sampling, and then filtered, and finally to the sampling)

基于MODIS 大气水汽的计算，大气水汽含量(Atmospheric Water Vapor Calculation Based on MODIS)