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这个压缩包中包含了巴特沃斯滤波算法的高通和低通两款代码，同时还有几篇巴特沃斯算法的文章，记录了关于巴特沃斯算法的一些应用领域。(This compressed package contains the code of two of the high-pass and low-pass Butterworth filter algorithm, at the same time, there are few Butterworth algorithm articles recorded Butterworth algorithm applications.)

图像处理中比较有用的二维图像光谱分析，Matlab源代码(Image processing more useful two-dimensional image spectra, Matlab source code)

SIFT匹配算法，能够提取出具有尺度不变性的特征点，且能够对两幅图像进行鲁棒的匹配。(SIFT matching algorithm, able to extract with the scale invariance of the feature points, and the two images to be able to match robust.)

说明：  图像凭借代码，捕获摄像头进行图像拼接。利用柱面投影的方式进行投影，然后对图像进行拼接。(image stitching program)

基于半色调图像的数据隐藏即加数字水印，针对半色调图像，所以使用的是DHSPT算法，算法较容易理解，简单，嵌入效果相对较好(Hidden based on the halftone image data plus digital watermark for halftone images, use DHSPT algorithm, the algorithm is easy to understand, simple, embedded effect is relatively good)

调用 envi5.3自带的FMask云检测功能，并输出掩膜文件(Call the FMash cloud detection function of envi5.3 and output the mask file)

医学超声图像滤波必看：针对斑点噪声的几种滤波算法的经典论文。包括Lee的滤波算法，Frost的滤波算法，Kuan的滤波算法，MAP（Maxima a priority）的滤波算法。(Medical ultrasound image filtering must-see: a classic paper several filtering algorithm for speckle noise. Including the filtering algorithm of Lee and Frost filtering algorithm, Kuan filter algorithm, MAP (Maxima a priority) filtering algorithm.)

Large Deviations for Gaussian Queues - Modelling Communication Networks - Michel Mandjes

提取图像的局部二值特征；广泛用于纹理特征提取 具有旋转不变性(Extract local two value features of images; widely used in texture feature extraction. Rotation invariance)

mean shift 的经典实现源代码，可以做为基核，大量改用(realize the classical mean shift source code, can be used as nuclear matrix, a large number of switch)