svdandpca

alpha稳定分布噪声的matlab实现(alpha stable distribution noise matlab implementation)

：数字水印技术作为数字媒体版权保护的有效办法，近年来在国内外引起了人们极大的兴趣。作者采用了DCT离散余弦变换的算法，对图像这种多媒体数字作品进行了数字水印的嵌入和检测研究。并且使用了高效实用的编程工具MATLAB来介绍了一种DCT域的图像数字水印嵌入和提取的(BASIC_WM.M ..........................................cellauto.m ..........................................dctwatermark.m ..........................................detectbasic_wm.m ..........................................plotcorr_coef.m ..........................................wavedetect.m ..........................................wavedetect2.m ..........................................wavemarksvd.m ..........................................wavemarksvd)

生成静态散斑图，通过快速傅里叶变换，得到激光散斑图。(Generate static speckle pattern)

bemd分解得到图像基本imf，二维希尔伯特变换(Image basic IMF obtained by BEMD decomposition.Two-dimensional Hilbert transform)

CBCT图像fdk重建,预投影、投影滤波、重建演示，功能强大(it s about the fdk rec for CBCT，forward projection、filter projection、rec demo)

锥束CT（CBCT）的三维重构算法（FDK）(the FDK algorithm for cone beam CT reconstruction)

三种改进的图像增强算法，包括改进的类拉普拉斯增强算法，混合式MSRCR彩色图像增强算法，区域自适应反锐化掩模图像增强算法。(Three improved image enhancement algorithms, including improved classes, Laplace enhancement algorithms, the hybrid MSRCR Color Image Enhancement algorithm, region adaptive unsharp mask image enhancement algorithms)

用扩散滤波实现图像增强，包括高斯滤波预处理，梯度计算，结构张量计算，扩散张量计算，数值离散以及增强效果评估代码(Diffusion-image enhencement)

KMEANS代码段，用于图像分割，已配置完成(KMEANS,use to achieve image segmentation)

基于Canny算子检测图像边缘，其中含有非极大值抑制功能。(Based on Canny operator edge detection image, which contains a non-maxima suppression.)