How to get x,y coordinates of each pixels in a connected component ??
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Dear all,
I = imread('image.jpg');
I2 = im2bw(I) ;
st = regionprops( I2, 'PixelIdxList', 'PixelList');
We can get pixelId list and pixels of connected components as above. But I need to get the x,y coordinates of each pixels. Anybody can help me?
Thank you..
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Answers (4)
Andrei Bobrov
on 8 Jul 2011
st = regionprops( I2, 'PixelList');
xy=cat(1,st.PixelList)
xy(:,2) = abs(xy(:,2) - size(I2,1)) + 1
plot(xy(:,1),xy(:,2),'g*')
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Paulo Silva
on 8 Jul 2011
bw = imread('text.png');
L = bwlabel(bw);
s = regionprops(L, 'centroid');
XY=[s.Centroid];
ax=axes
hold on
imshow('text.png','Parent',ax)
plot(ax,XY(1:2:end),XY(2:2:end),'*')
Sergio Arango
on 6 Apr 2021
[x,y]=size(I2);
[~,y2]=size(st.PixelIdxList);
for i=1:y2
locs(i,1)=rem(st.PixelIdxList{1,i}(1),x);
locs(i,2)=fix(st.PixelIdxList{1,i}(1)/y)+1;
end
This code gives you the locations of the first pixel in each region. I don't know if this one's helpful, but I hope so :)
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