I've changed the image format to a tiff file to suit my problem better, however I am still receiving the same error.
Error with image analysis
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Hello!
I've been trying to get this script working, but I don't know how. What it should be able to do is make the image black and white and be able to pick out the centroid of the object in the image.
Image
![](https://www.mathworks.com/matlabcentral/images/broken_image.png)
Code
i = imread('343A #1.tif');
j = size(i);
imtool(i);
for k = 1:j(1)
for l = 1:j(2)
if i(k,l,1) > 160 & i(k,l,2) > 160
d(k,l) = 1;
else
d(k,l) = 0;
end
end
end
imtool(d);
label = bwlabel(d);
imagesc(label);
[label,num] = bwlabel(d,4);
stats = regionprops(label,'basic');
stats(1).Area
stats(1).Centroid
max_area = max([stats.Area]);
biggrain = find([stats.Area]== max_area);
stats(biggrain).Centroid
Error
??? Attempted to access i(2,51,2); index out of bounds because size(i)=[256,64,1].
Error in ==> TestingCentroid3 at 10 if i(k,l,1) > 160 & i(k,l,2) > 160
Réponses (2)
Sean de Wolski
le 18 Mai 2011
i is apparently a 2d image. what is j (size(i))?
d = I > 160; %don't name your variables i,j as they are the sqrt(-1)
2 commentaires
Frank
le 18 Mai 2011
2 commentaires
Sean de Wolski
le 18 Mai 2011
i(k,l,1) is the same location as i(k,l).
hence instead of both for-loops you could do
d = i>160;
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