Perfect, thanks. I obtained the same value using another method, just wanted to double check that my answer was right. May I ask, is this value the same as the area per unit area? Or is it just the area of connected objects in the image? Thanks
How to find the connected objects per unit area
2 views (last 30 days)
Show older comments
I have segmented an image of tubules (heart cells) and now need to extract some measurements. How would I go about finding the number of connected tubules in a unit area of the image?
Thanks in advance, I hope someone can help!
Accepted Answer
Image Analyst
on 28 Apr 2016
Simple. Just call bwlabel:
[labeledImage, numberOfRegions] = bwlabel(binaryImage);
1 Comment
Image Analyst
on 28 Apr 2016
Regarding your comment above "Perfect, thanks. I obtained the same value using another method, just wanted to double check that my answer was right. May I ask, is this value the same as the area per unit area? Or is it just the area of connected objects in the image? Thanks" ...
No, this line of code just labels the binary regions (assigns an ID number to each connected component) and counts them. To find the area you'd have to use regionprops
measurements = regionprops(labeledImage, 'Area');
But I don't know what the definition of "area per unit area" is. Wouldn't that be 1? Or do you mean area fraction, like the area divided by the area of the whole image?
More Answers (0)
See Also
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!