游长平滑 Matlab代码

I am submitting my Computational science and engineering assignment #3 based on SVD/PCA.The zip file contains matlab codes of Exercise no:1 and Exercise no:3 as program_1.m and program_3.m files respectively. I have made a separate reports for the above said two exercises as Report_problem1 and Report_problem3, both in pdf format. Please find the attached zip file.

Quad Tree image processing

本程序可以作为matlab插值使用，并可经过改变变量进行修改(This program can be used as matlab interpolation used and may be modified after changing the variable)

对于初学者用matlab画图很有帮助，能迅速熟练掌握matlab作图方法(it is bery helpful for beginners to learn Matlab drawing ,with it you can quickly master the mapping method of matlab)

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对入射光进行相位调控，再经过傅里叶变换后进行输出，显示各个截面的光场分布(The incident light is regulated by phase, and then the output is carried out after Fourier transform, and the distribution of the light field of each section is displayed)

图像质量评价经典算法，ssim算法评价图像质量好坏程度的度量(Image quality assessment of the classical algorithm, SSIM algorithm.A measure of the degree of image quality )

说明：  EEMD：总体经验模态分解，一种改进的EMD方法。(Total empirical mode decomposition is an Improved EMD method.)

%IIR数字滤波器的设计 %设计一个低通数字滤波器，设计指标：通带截止角频率为ωp，阻带截止频率为ωs，通带最大衰减为δp，阻带最小衰减为δs %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%冲激响应不变法%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% clc; clear all; %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%利用巴特沃斯设计低通模拟滤波器%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     wp = 0.2*pi; ws = 0.3*pi; Deltap = -1; Deltas = -15;%低通数字滤波器设计指标     TS = 1;%采样时间TS     Wp = wp/TS; Ws = ws/TS; DeltaP = Deltap; DeltaS = Deltas; %求取模拟滤波器的设计指标     %确定巴特沃斯的阶数N和截止频率Ωc     N = log((10^(-DeltaP/10)-1)/(10^(-DeltaS/10)-1))/(2*log(Wp/Ws));     N = ceil(N);          %模拟滤波器的阶数N     Wc = vpa( Ws/( ( 10^( -DeltaS/10 )-1 )^( 1/( 2*N ) ) ),5 )%模拟滤波器的截止频率Wc %%获得模拟滤波器的系统函数H（s） &n

大学数值分析算法，采用加权网络中节点强度和权重都是幂率分布的模型，可以得到很精确的幅值、频率、相位估计，连续相位调制信号(CPM)产生，微分方程组数值解方法，搭建OFDM通信系统的框架。