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源碼圖像去噪-小波閾值去噪.zip
做圖像處理已經(jīng)一年了,搜集和自編了一些m源代碼,將分類傳上,與大家分享,希望對(duì)大家有所幫助。本帖上傳的都是圖像去噪方面的,文件名即去噪算法名。
做圖像處理已經(jīng)一年了,搜集和自編了一些m源代碼,將分類傳上,與大家分享,希望對(duì)大家有所幫助。本帖上傳的都是圖像去噪方面的,文件名即去噪算法名。
代碼片段和文件信息
%??用平移變換平移法(cycle_spinning)消除gibbs效應(yīng)
%??編程人????沙威(Wei?Sha)?安徽大學(xué)(Anhui?University)?ws108@ahu.edu.cn
clear;
clc;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%??1.原始信號(hào)
f=50;????%?信號(hào)頻率
fs=800;??%?采樣頻率
N=128;???%?采樣點(diǎn)?
%??信號(hào)賦值
n=1:N;
y=sin(2*pi*f*n/fs);
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%??2.噪聲
noise=0.4*rand(1128);
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%??3.染噪信號(hào)
y_noise=y+noise;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%??4.硬消噪采用cycle_spinning技術(shù)
%??累加量
z5=zeros(1N);
%??平移變換頻移法
for?i=1:N;
????z=circshift(y_noise.‘i-1).‘;??%??源信號(hào)右平移
????[z1z2]=lwt(z‘db3‘);????%??小波正變換
????z2=zeros(1N/2);?????????%??
?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????文件????????1441??2007-06-12?10:33??cycle_spinning.m
?????文件?????????218??2007-06-04?14:14??www.pudn.com.txt
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