6-fingerprint-preprocessing

使用matlab分析传统光学系统加入三次相位掩模板之后对中间像进行图像复原(Analysis using matlab conventional optical system after adding three phase mask image on the intermediate image restoration)

通过dct的8*8块的变换量化操作结合水印生成水印图像，其中包含几种常见的攻击测试。(The program generates watermark image through DCT transform.)

说明：  在matlab中对图像进行同态滤波减少反光(Homomorphic filtering of images in matlab to reduce reflections)

程序设计步骤： 1、去均值 2、计算协方差矩阵及其特征值和特征向量 3、计算协方差矩阵的特征值大于阈值的个数 4、降序排列特征值 5、去掉较小的特征值 6、去掉较大的特征值(一般没有这一步） 7、合并选择的特征值 8、选择相应的特征值和特征向量 9、计算白化矩阵 10、提取主分量(Programming steps: 1 to mean 2, calculation of covariance matrix and its eigenvalues and eigenvectors 3, the calculation of covariance matrix eigenvalues greater than the threshold number of 4, in descending order of eigenvalue 5, remove the smaller eigenvalue 6, remove the larger eigenvalue (usually not this step) 7, the combined choice of eigenvalues 8, select the appropriate eigenvalues and eigenvectors 9, computing whitening matrix 10, principal component extraction)

在matlab环境中对图像提取Haar特征(Environment in matlab to extract Haar features for image)

用于压缩感知重构的TV算法,主要解决压缩感知中图像重构的问题(Used to compress TV algorithm to reconstruct the perception)

基于轮廓来寻找流动部分，效果不是很好，但是还可以拿来用(Based on the outline to find the flow part, the effect is not very good, but also can be used with)

数字图像处理用到的标准测试图像，很多图片。(IMP test images。)

Mean shift algorithm for segmentation and smoothing images. the example images are horses.

采用多成分分析算法进行图像分解，并对该算法进行评价(MCA picture dissolution)