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Pore size distribution chart

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Ravin Rayeok
Ravin Rayeok on 24 Feb 2020
Commented: Ravin Rayeok on 25 Feb 2020
Hello,
I need some assistance here...
I would love to know how do you create a distribution chart based on size and number (amount) of the pores.
Thank you!

  2 Comments

darova
darova on 24 Feb 2020
Can you show distribution chart you want to see (simple drawing)?
Ravin Rayeok
Ravin Rayeok on 25 Feb 2020
It's about like this but it also depends on the small pore (white pixel).
And on the left bottom side of the picture above, there's some kind of noise or small black pixels on the white pixel pore that may separate the white pore and eventually lead to missinterpretation.

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Accepted Answer

darova
darova on 25 Feb 2020
Edited: darova on 25 Feb 2020
Use regionprops
I = imread('image.jpeg');
I1 = im2bw(I); % binarize image
cc = bwconncomp(I1); % or 'bwlabel' to separate each region
stats = regionprops(cc, 'Area'); % calculate area of each separate region
area = cat(1,stats.Area);
area(area>500) = []; % filter bigger blobs/regions
hist(area,20) % histogram of 20 groups
xlabel('size')
ylabel('number')
result

  7 Comments

Show 4 older comments
Ravin Rayeok
Ravin Rayeok on 25 Feb 2020
another piece of pores
darova
darova on 25 Feb 2020
Sorry, forgot this line
area = cat(1,stats.Area);
I correct the code. Look
Ravin Rayeok
Ravin Rayeok on 25 Feb 2020
ah i see, sorry
and thank you again! :)

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