image-sharpness

Jianchao Yang 的基于稀疏表示的单幅图像重建的原始代码，先将高低训练图像分块，再将块训练成高低字典，将测试图像映射到低字典上，得到系数，再乘以高子典就得到最后的图像。对学习超分辨率同学的参考作用很大。(This is the original matlab code for super resolution by Jianchao Yang 。The method is sparse represent based on the overcomplete dictionary。)

MICC-F220.zip matlab ..............

基于离散2维小波变换的彩色图像水印程序。输入原图和logo，可直接得到水印图像。(Based on discrete wavelet transform 2-D color image watermarking program. Input original image and logo, watermarked image can be obtained directly.)

说明：  （1）图像基本操作：不同格式（大于3种）图像的读入与存盘、文字叠加、不同彩色空间的转换、图像的DCT及FFT变换等； （2）图像增强：包括直方图拉升（线性和非线性）、直方图均衡、平滑与锐化（采用不同的滤镜），美颜（加分项）； （3）图像恢复：几何操作（如旋转、缩放、投影校正等）、模糊恢复（如运动模糊消除等，加分项）； （4）图像合成（加分项）：实现换头、换背景、图像拼接等功能。((1) Basic operation of image: reading and saving of images in different formats (more than 3 kinds), text superposition, conversion of different color spaces, DCT and FFT transformation of images, etc; (2) Image enhancement: including histogram lifting (linear and non-linear), histogram equalization, smoothing and sharpening (using different filters), beauty (bonus item); (3) Image restoration: geometric operations (such as rotation, scaling, projection correction, etc.), blur restoration (such as motion blur elimination, etc., plus points); (4) Image synthesis (Bonus): realize the functions of head changing, background changing, image splicing, etc.)

[Wang 1998]Spiral CT Image Deblurring for Cochlear Implantation

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

基于混沌的序列的对数字图像进行的魔方加密变换，介绍了非线性动力学系统的logistic映射形成的混沌序列的方法 。(Based on chaotic sequence of digital images of the Rubik)

很详细的Harris算法讲解~~~包括非最大值抑制的算法~自适应~~(Harris algorithm is very detailed explanation ~ ~ ~ including non-maximum suppression algorithm ~)

radon 的逆变换,可以实现图像重建，前提是前面的投影用radon变换来做(iradon)

全变分自适应去噪模型张红英matlab平台，(Full variable adaptive denoising model Zhang Hongying matlab)