applying colour for clustered image

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kash
kash 2013-3-1
i have a code below of 2 images
for n=1:length(dirlist);
img = imread([pathname, dirlist(n).name]);
I=img;
HSV = rgb2hsv(I);
%HSV=I;
H = HSV(:,:,1); H = H(:);
S = HSV(:,:,2); S = S(:);
V = HSV(:,:,3); V = V(:);
idx = kmeans([H S V],3);
figure,imshow(ind2rgb(reshape(idx, size(I,1), size(I, 2)), [0 0 1; 0 0.8 0;1 0 0]))
end
the image consist of water,and land
one image consist of 70% of water and other 40% of water is it possible to give same colour for water in two images
plz assist

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回答（2 个）

ChristianW
ChristianW 2013-3-1
You can define the water color. Than calculate the mean color for every cluster. Compare the mean cluster color with your defined water color to find your water cluster.
You could also use the mean cluster color directly as cluster color.
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ChristianW
ChristianW 2013-3-2
You are messing things up. I took your color/texture segmentation (implemented with kmeans), the segmentation isn't my part of the code. My part just takes a kmeans output and does a cluster affectation. It applies color for the clustered image, thats what you've asked for.
If your question is aimed at improving your segmentation, than Image Analyst is your best bet.
kash
kash 2013-3-2
my question also deals with this,having two images consisting of water,how can we give same colour for water for different images

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Image Analyst
Image Analyst 2013-3-2
Looks like you can find the blue water fairly easily with color classification. The green water you'll have to find by adding in a texture filter like stdfilt() or entropyfilt() because the trees are very close to the same color and the only difference is the texture. The white stuff is either sand or surf on sand - either way white stuff is land. If you still need help, say so. I have color classification examples in my File Exchange http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862
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Image Analyst
Image Analyst 2013-3-2
Exactly what does "Walter colouring must be mase" mean?
kash
kash 2013-3-5
I cannot understand what u said,what is walter colouring

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