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

I

[KSSV]

https://in.mathworks.com/help/images/ref/imhist.html

Answer 1

[Chunru]

I = imread('pout.tif');
imhist(I)

Answer 2

[Dave B]

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')