Info

此问题已关闭。 请重新打开它进行编辑或回答。

Need betterment for the Moving average filter

1 次查看（过去 30 天）
Gova ReDDy
Gova ReDDy 2013-12-28
关闭： MATLAB Answer Bot 2021-8-20
Hello, I made a moving average filter that has five sub windows say P1,p2,p3,p4,p5 where p1 has the current 500 values of the signal and p2:previous 500 values ,p3:500 values prior to p2,p4:500 values prior to p3,p5:500 values prior to p4 as shown in the below code and also it replaces the current 500 values of the signal with the average of the 2500 values i.e,p1(current values)+p2+p3+p4+p5.
clc;
clear all;
nm=load('signal1.mat');
nm1=nm.nomotion(4000:40000,:);
p1=zeros(500,1);
p2=p1;
p3=p2;
p4=p3;
p5=p4;
for i=1:500:length(nm1)-500
if (i<500)
p5=nm1(i:i+499,:);
out1(i:i+499,:)=p5;
elseif (i<1000)
p4=nm1(i:i+499,:);
out1(i:i+499,:)=p4;
elseif(i<1500)
p3=nm1(i:i+499,:);
out1(i:i+499,:)=p3;
elseif(i<2000)
p2=nm1(i:i+499,:);
out1(i:i+499,:)=p2;
else
p1=nm1(i:i+499,:);
for k=1:1:length(p1)
out(k,1)=(p1(k)+p2(k)+p3(k)+p4(k)+p5(k))/5;
end;
p5=p4;
p4=p3;
p3=p2;
p2=out;
out1(i:i+499,:)=out;
end;
end;
plot(out1);hold on;plot(nm1,'-r');
The result after averaging is shown below with red showing averaged signal and blue showing input signal.But I think the averaging is not done properly.
can someone explain how to make a better moving average as mentioned above and the file is attached.

此问题已关闭。

回答（1 个）

Image Analyst
Image Analyst 2013-12-28
编辑：Image Analyst 2013-12-28
You could use conv().
blurredSignal = conv(signal, ones(WindowWidth)/WindowWidth, 'same');
  5 个评论
显示 3更早的评论
Gova ReDDy
Gova ReDDy 2013-12-29
Can you suggest me method for implementing the above mentioned or any other fro the reuired.
Image Analyst
Image Analyst 2013-12-29
No, probably not, unless I spent more time trying to figure out what's going on with your code than I can spend. Maybe someone else will. Sorry.

此问题已关闭。

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by