Matching

说明：  把ALIST形式的矩阵转为为稀疏矩阵,是以matlab语言进行转化的(turn alist form matriax to sparse matriax)

invokes image dialog box for interactive image loading

Design of low density parity check codes for modulation and detection

This package has PCASIFT sourcecode implemented by MATLAB and works powerful in Image processing works.

findEnergy.m 计算出图像的梯度图 findSeamImg.m 计算出所有可能的竖直缝 findSeam.m找出能量最小的一条竖直缝 removalMap.m将需要删除的N条竖直缝存储起来并按照索引逐条删除 SeamCut.m将选中的缝一条条的删除 SeamPlot.m在图中画出要删除的缝 Testseam.m调用以上函数的主程序(FINDENERGY creates an gradient img from a given RGB or grayscale image. FINDSEAMIMG finds the seam map from which the optimal (vertical running) seam can be calculated. FINDSEAM returns a column vector of coordinates for the pixels to be removed (the seam). SEAMPLOT takes as input an image and the SeamVector array and produces an image with the seam line superimposed upon the input image, x, for display purposes. SEAMCUT takes as input a RGB or grayscale image and SeamVector array to find the pixels contained in the seam, and to remove them from the image. REMOVALMAP takes a given image and finds the ordered set of (vertical) seams that are removed from an image and returns them in an array, where the Nth column in the array corresponds to the Nth seam to be removed.)

Thresholding is used to segment an image by setting all pixels whose intensity values are above a threshold to a foreground value and all the remaining pixels to a background value. Whereas the conventional thresholding operator uses a global threshold for all pixels, adaptive thresholding changes the threshold dynamically over the image. This more sophisticated version of thresholding can accommodate changing lighting conditions in the image, e.g. those occurring as a result of a strong illumination gradient or shadows.

说明：  MATLAB主成分分析，改变变量后可以用于因子变量分析，生物学上的(MATLAB component analysis, change the variables can be used to factor multivariate analysis, biological)

source code for image forensics

simulation de la commutation forcé d un hacheur a thyristor exemple1

利用最小二乘来计算Volteer级数的系数(Calculated using the least squares coefficient Volteer series)