programme matlab pour calculer et trace l'histogramme d'une image

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Answers (2)


Dave B
Dave B on 21 Oct 2021
Edited: Dave B on 21 Oct 2021
im=imread('peppers.png'); % exemple d'image
imshow(im)
Si vous avez Image Processing Toolbox:
figure
imhist(im)
Autrement:
im=imread('peppers.png');
histogram(im(:),255,'EdgeColor','none')
xlim('tight')
RGB:
figure
im=imread('peppers.png');
r=im(:,:,1);
g=im(:,:,2);
b=im(:,:,3);
t=tiledlayout(3,1);
nexttile
histogram(r(:),255,'EdgeColor','none','FaceColor','r')
nexttile
histogram(g(:),255,'EdgeColor','none','FaceColor','g')
nexttile
histogram(b(:),255,'EdgeColor','none','FaceColor','b')
xlim(t.Children,'tight')

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