Kmeans clustering in YUV image space

2 次查看（过去 30 天）
Algorithms Analyst
Hi all.
I have a problm in kmeans clustering using matlab.when I apply kmeans function in my image I get following error
Warning:Emty Cluster created at iteration 1.
Warning:Emty Cluster created at iteration 2.
Warning:Emty Cluster created at iteration 3.
Warning:Emty Cluster created at iteration 4.
I am using it becasue I am reducing colors of image and want to get the most representative colors of image. How can I solve this error.y code is under
NoColors=40;
K=40;
[Rows Cols NumberofColors ]=size(image);
s_img=size(image);
inputImg=zeros((s_img(1)*s_img(2)),3);
inputImg(:,2)=U(:);
inputImg(:,3)=V(:);
inputImg=double(inputImg);
%Kmeans starting
[idx C]=kmeans(inputImg,NoColors,'EmptyAction','singleton');
% %Kmeans Completed
palette=round(C);
% %Color Mapping
idx=uint8(idx);
outImg=zeros(s_img(1),s_img(2),3);
temp=reshape(idx,[s_img(1) s_img(2)]);
for i=1:1:s_img(1)
for j=1:1:s_img(2)
outImg(i,j,:)=palette(temp(i,j),:);
end
end
Remember image is in YUV space and just want to quantize the color of UV image.
Thannks

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回答（2 个）

Thorsten
Thorsten 2013-2-7
[idx C]=kmeans([U(:) V(:)],NoColors,'EmptyAction','singleton');
Elad
Elad 2013-7-6

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