zhijiezhuanju

主分量分析是一种基本的多维数据描述方法，是一种能使多维数据按照实际研究的需要更好地描述出来的变换方法。(Principal component analysis is a basic description of the method of multidimensional data is a multidimensional data in accordance with the needs of the actual research to better describe the transformation method can make.)

I need the matlab codings for medical image proccessing for eg:downsampling,bicubic interpolation

说明：  非线性独立分量分析(ICA)源码,主要是用于非线性ICA进行盲源分离算法的函数(independent component analysis (ICA))

DistMesh giving a singular FEM matrix?(Hi Anyone here with some experience of using DistMesh in finite element code? I m solving the scalar Helmoltz equation in an annular region in 2D: rho_1 < rho < rho_2 where rho_1 is the radius of a Perfect Electric Conducting cylinder and rho_2 is where the mesh is truncated using an Absorbing Boundary condition. Now, I ve written code to mesh the region myself (by dividing the region into annular rings and picking a fixed number of points on each ring) and I ve written another program which uses DistMesh to mesh the region. I get a nice solution using my own meshing code but the FEM matrix becomes singular when I use DistMesh. This is the DistMesh Code I used: Circle with hole rABC=1.5 rCyl=0.5 fdstring=sprintf( ddiff(dcircle(p,0,0, f),dcircle(p,0,0, f)) ,rABC,rCyl) fd=inline(fdstring, p ) box=[-2,-2 2,2] [p,N]=distmesh2d(fd,@huniform,0.04,box,[]) I tried changing box and the 0.04 value (initial edge length). But every time, the matrix becomes sin)

说明：  Segmentation using watershed is very easily to separate the overlapping cell.

对于npsk的调制和解调方案，修改n的值就可以得到各种psk的效果(Modulation and demodulation for npsk program, modify the value of n can be the effect of various psk)

基于贝叶斯的抠像算法，通过一个最大似然的标准去估计透明度(A Bayesian Approach to Digital Matting，uses a maximum-likelihood criterion to estimate the optimal opacity)

绘制石墨烯结构，石墨烯为单层石墨结构，因其在性能上的优越性，引起了广泛的关注(graphene)

用matlab实现分形的绘图，可以达到对分形的进一步了接(Using matlab to achieve fractal drawings, fractals can be achieved for a then further)

本程序含标准的粒子滤波，以及对其改进的辅助粒子滤波，包括一些重要的研究仿真。(This program contains the standard particle filter, and its improved auxiliary particle filter, including some important research simulation.)