hi guys how should i fix i=this code error its supposed to be changing an image to gray scale mind u this is in app designer

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jana
jana 2022-12-2
评论： jana 2022-12-2

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Kevin Holly
Kevin Holly 2022-12-2
Have you tried using im2gray instead of rgb2gray?
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jana
jana 2022-12-2
so i did as you said and it worked thank u very much but the last thing is the 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)];
jana
jana 2022-12-2
sorry 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)];

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