I want to do a knob for salt and pepper noise but the value of the noise dose not change
2 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
changingValue = event.Value;
input=im2gray(a); %a is my image
imshow(input,'Parent',app.UIAxes_2);
app.SaltpepperButton_2.Value=true;
J=input;
J =imnoise(J,'salt & pepper');
imshow(J,'Parent',app.UIAxes_2);
end
2 commentaires
Réponse acceptée
Chris
le 14 Jan 2023
Modifié(e) : Chris
le 14 Jan 2023
function UIAxesButtonDown(app, event)
% The default button style doesn't have a value.
% changingValue = event.Value;
% You can't grab "a" from nowhere. If you didn't generate it in
% this callback, or if you want to store it for later use,
% it should be a property of the app.
input=im2gray(app.a);
imshow(input,'Parent',app.UIAxes_2);
% app.SaltpepperButton_2.Value=true;
J=input;
J =imnoise(J,'salt & pepper');
% You just used these axes. Depending on your computer, or how
% Matlab optimizes the function,
% the change will be too fast to see/skipped over.
pause(.5)
imshow(J,'Parent',app.UIAxes_2);
end
0 commentaires
Plus de réponses (1)
Image Analyst
le 14 Jan 2023
You need to call imnoise with the parameter that controls the amount of noise added to the image. You get this value by getting the value of a slider or knob, or edit field, or however the user is going to indicate the level of noise to be added to the image. For example, if the noise density is controlled by a slider, in the slider callback
% Get noise level from the control on the GUI.
noiseDensity = app.sldNoiseDensity.Value;
% Apply this density to the noise-free image:
noisyImage = imnoise(originalImage, 'salt & pepper', noiseDensity);
0 commentaires
Voir également
Catégories
En savoir plus sur Image Processing Toolbox dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!