task2

利用C、C＋＋或者MATLAB对一张照片进行DCT和DFT变换，并进行简要分析。 比较保留20个DCT变换系数重构的图像与原始图像之间的差别(Use C, C++ or MATLAB to carry out a photo on the DCT and the DFT transform, and a brief analysis. Comparison of retention of 20 DCT transform coefficients of image reconstruction with the difference between the original image)

说明：  给大家上传一些matlab的程序，喜欢的来(For everyone to upload some matlab procedures, like to)

The ouput is the TE/TM band structure (first five bands) along pricipal directions (G-X-M-G) of a square-lattice photonic crystal with unit cell consisting of a substrate of "epb" relative permittivity with circular rods(holes) of "epa" relative permittivity and radius "r". Usage is SharifPWE_BZplot(N,RES,r,epa,epb) N: N in PWE algorithm (number at which the summations are truncated) RES: number of the divisions on every side of BZ#1 r: normalized radius of the circle of holes/rods (0<r<0.5) epa: relative permittivity of holes/rods epb: relative permittivity of the substrate Written by Amir Hosseini for the Course Photonic Crystals (C) Copyright 2005 School of Electrical Engineering Sharif University of Technology All Rights Reserved

Matlab6.5与VC60混合编程工具Matcom4，有助于两者混合编程(Matlab6.5 and VC60 mixed programming tool Matcom4, helps both hybrid programming)

Bisection method matlab

这是个数字信号处理的burg算法的 matlab实现,里面各个参数可调,效果非常不错(This is a digital signal processing matlab algorithm to achieve burg, which adjustable parameters, the effect is very good)

说明：  用Reinhard算法实现了图像之间色彩的迁移，程序为Reinhard.m；并对该算法进行了改进，程序为Reinhard improved.m(color transfer using Reinhard method.)

CLOUD COMPUTING RESEARCH PAPERS

雷达作用距离仿真，雷达标准形式方程仿真。搜索条件下雷达方程仿真；跟踪条件下雷达方程仿真；杂波条件下雷达方程仿真；大气衰减条件下雷达方程仿真；(Radar range simulation, radar simulation standard form equation. Radar equation simulation under search criteria tracking radar equation simulation under conditions radar equation simulation clutter conditions under conditions of atmospheric attenuation radar equation simulation )

Efficient and accurate computation of the Fresnel sine and cosine integrals