源码图像去噪-小波阈值去噪.zip

源码图像去噪-小波阈值去噪.zip
做图像处理已经一年了，搜集和自编了一些m源代码，将分类传上，与大家分享，希望对大家有所帮助。本帖上传的都是图像去噪方面的，文件名即去噪算法名。

%  用平移变换平移法（cycle_spinning）消除gibbs效应
%  编程人    沙威（Wei Sha） 安徽大学（Anhui University） ws108@ahu.edu.cn

clear;
clc;

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%  1.原始信号

f=50;    % 信号频率
fs=800;  % 采样频率
N=128;   % 采样点 

%  信号赋值
n=1:N;
y=sin（2*pi*f*n/fs）;

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%  2.噪声
noise=0.4*rand（1128）;

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%  3.染噪信号
y_noise=y+noise;

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%  4.硬消噪采用cycle_spinning技术

%  累加量
z5=zeros（1N）;

%  平移变换频移法
for i=1:N;
    z=circshift（y_noise.‘i-1）.‘;  %  源信号右平移
    [z1z2]=lwt（z‘db3‘）;    %  小波正变换
    z2=zeros（1N/2）;         %  

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     文件        1441  2007-06-12 10:33  cycle_spinning.m
     文件         218  2007-06-04 14:14  www.pudn.com.txt