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it s about digital watermark using LSBs, DCT and Wavelet methods

he files in this package comprise the Matlab implementation of a foreground segmentation algorithm based upon graph cuts, described in: Better Foreground Segmentation Through Graph Cuts, N. Howe & A. Deschamps. Tech report, http://arxiv.org/abs/cs.CV/0401017. The file extractForeground.m contains a sample function that will perform a complete foreground segmentation for static camera video. It uses a number of parameters, which are described in the documentation. An attempt was made to choose sensible default values, but they may need to be adjusted for some videos. More generally, the implementation in extractForeground.m is only a suggestion of how the graph-based segmentation might be used. The same approach can be applied with other (perhaps time-adaptive) background models. The key step is at line 113 of the code, once the deviation array has been created. The graph-cut segmentation can be applied similarly to a deviation matrix computed in any other way.

说明：  ADMM是一个高效的优化算法，可以用在很多领域中，1范数是一种常用的目标函数。(ADMM is an effective, fast optimizing algorithm and can be used in many applications. 1-norm is a commonly used objective function.)

说明：  共轭梯度法的代码 实现大型共轭对称方程组的求解(the code for conjugate gradient algorithm, which can be used for the solution of equations)

filter calculations matlab files

极化SARlee滤波程序，对极化相干矩阵进行处理，也可以调整为普通图像(SARlee polarization filtering procedures to deal with polarization coherent matrix can also be adjusted to the general image)

Wifi Simulator for 802.11a Simulation

Seismic analysis just for fun

When plumbing the depths of the key tree, this sets a hard limit set on how deep we re willing to go.

Computational Colour Science Using MATLAB