Can I use median filtering without put the salt & pepper noise?

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Atifah Samuri
Atifah Samuri on 12 Jan 2022
Answered: Image Analyst on 13 Jan 2022
%median filtering
handmf = imread ('ifa.jpg');
handmedfilt = imnoise (handmf,'salt & pepper', 0.02);
handdahmf = medfilt3 (handmedfilt);
imwrite(handmedfilt, 'ifas&p.jpg')
imwrite(handdahmf, 'ifamedifilt.jpg')

Answers (2)

yanqi liu
yanqi liu on 13 Jan 2022
yes,sir,may be use it directly,such as
%median filtering
handmf = imread ('cameraman.tif');
%handmedfilt = imnoise (handmf,'salt & pepper', 0.02);
handdahmf = medfilt2 (handmf);
%imwrite(handmedfilt, 'ifas&p.jpg')
%imwrite(handdahmf, 'ifamedifilt.jpg')
figure;
subplot(1,2,1);imshow(handmf);
subplot(1,2,2);imshow(handdahmf);

Image Analyst
Image Analyst on 13 Jan 2022
Not sure what "Can I use median filtering without put the salt & pepper noise?" means, but yes, you can use medfilt2() on an image without first applying noise to the image beforehand.

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