how to fix these code lines for app designer

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e gaussian and periodic noise this is my code for them and they didnt work how can i fix them plz?
this is the gaussina noise code
a=(app.Image);
noise=imnoise(a,'gaussian');
I=imshow(noise,'parent',app.UIAxes2,...
'XData',[1 app.UIAxes2.Position(3)],...
'YData',[1 app.UIAxes2.Position(4)]);
app.UIAxes2.XLim=[0 I.XData(2)];
app.UIAxes2.YLim=[0 I.YData(2)];
and this the periodic noise code
a=(app.Image);
s=size(a);
[x,y]=meshgrid(1:s(1),1:s(2));
p=sin(x/3+y/5)+1;
noise=(im2double(a)+p/2)/2;
I=imshow(noise,'parent',app.UIAxes2,...
'XData',[1 app.UIAxes2.Position(3)],...
'YData',[1 app.UIAxes2.Position(4)]);
app.UIAxes2.XLim=[0 I.XData(2)];
app.UIAxes2.YLim=[0 I.YData(2)];
i also have this low pass filter also doesnt work how can i fix it
a=(app.Image);
f1=fspecial('average',[5,5]);
I=imshow(f1,'parent',app.UIAxes2,...
'XData',[1 app.UIAxes2.Position(3)],...
'YData',[1 app.UIAxes2.Position(4)]);
app.UIAxes2.XLim=[0 I.XData(2)];
app.UIAxes2.YLim=[0 I.YData(2
  3 Comments
Image Analyst
Image Analyst on 5 Dec 2022
Edited: Image Analyst on 5 Dec 2022
Not sure what that means. Does it now work, or not? Since you accepted my suggested fix, I assume it's all working now. If not, attach your .mlapp file with the paperclip icon.

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Accepted Answer

Image Analyst
Image Analyst on 4 Dec 2022
Instead of
f1=fspecial('average',[5,5]);
I=imshow(f1,'parent',app.UIAxes2,...
'XData',[1 app.UIAxes2.Position(3)],...
'YData',[1 app.UIAxes2.Position(4)]);
app.UIAxes2.XLim=[0 I.XData(2)];
app.UIAxes2.YLim=[0 I.YData(2
try
f1=fspecial('average',[5,5]);
imshow(f1, [], 'parent',app.UIAxes2)
axis('on', 'image')
@jana you've asked 15 questions but have never awarded any of the people who helped you with "reputation points" by clicking the "Accept this answer" link. They'd appreciate it if you did that. 🙂
  3 Comments
jana
jana on 5 Dec 2022
thank u so much genuienly i cant thank you enough truly last thing though these codes for turning the grayiage to blue and green whats the problem with them a=(app.Image);
green=a;
green(:,:,3)=0
setappdata(0,'filename',green);
setappdata(0,'imrotation',green);
I=imshow(green,'parent',app.UIAxes2,...
'XData',[1 app.UIAxes2.Position(3)],...
'YData',[1 app.UIAxes2.Position(4)]);
app.UIAxes2.XLim=[0 I.XData(2)];
app.UIAxes2.YLim=[0 I.YData(2)];
the blue code
a=(app.Image);
blue=a;
blue(:,:,2)=0
setappdata(0,'filename',blue);
setappdata(0,'imrotation',blue);
I=imshow(blue,'parent',app.UIAxes2,...
'XData',[1 app.UIAxes2.Position(3)],...
'YData',[1 app.UIAxes2.Position(4)]);
app.UIAxes2.XLim=[0 I.XData(2)];
app.UIAxes2.YLim=[0 I.YData(2)];

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