- Binarize the image so that it's logical. binaryImage = grayImage > 128
- Call binaryImage = imclearborder(binaryImage) to get rid of the single line around the perimeter.
- Invert the image: binaryImage = ~binaryImage, so now black circles are white
- Call binaryImage = imclearborder(binaryImage) to get rid of the large (now white) background
- Call bwlabel: [labeledImage, numberOfCircles] = bwlabel(binaryImage). This gives you the count.
- Call measurements = regionprops(labeledImage) if you want other measurements
Counting objects in an image
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subrajeet
il 7 Gen 2013
Commentato: Beenish Ishtiaq
il 5 Ago 2021
Dear Researchers, I have a problem of counting objects in an image. Suppose I have the below image (below link)
which i got after segmentation.
how can I count the small circles in the middle of the image. Kindly suggest
Subrajeet
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Image Analyst
il 7 Gen 2013
Modificato: Image Analyst
il 7 Gen 2013
2 Commenti
Image Analyst
il 7 Gen 2013
Modificato: Image Analyst
il 7 Gen 2013
It's just basic, elementary image segmentation via intensity thresholding. Nothing fancy at all. See updated instructions above.
Più risposte (3)
Thomas
il 7 Gen 2013
Modificato: John Kelly
il 8 Nov 2017
You could use techniques shown in many MATLAB image processing demos.
SANAHA PATHAN
il 25 Lug 2016
i want to count number of silkworm eggs from this figure, i used L=Count(binaryfig) this command for counting number of objects ,this command works but i actually dont know what actually this command count,and result of this command is different every time
3 Commenti
anna
il 5 Ott 2016
Modificato: anna
il 5 Ott 2016
hey I segmented blue nuclei from a blood smear image using k means color segmentation. how can i count the number of segmented blue nuclei. could u please help me with the code for counting [ cant use imfindcircle because the segmented nuclei are not exactly cirlce in shape ]
Image Analyst
il 8 Ott 2016
Beenish Ishtiaq
il 3 Ago 2021
Need code for counting different shapes separatelly which shows each shape result respectively in different edit boxes in GUI matlab..
2 Commenti
Image Analyst
il 3 Ago 2021
See my attached demos. I find that usually using findpeaks() to count the number of peaks in the plot of distance of perimeter from centroid works pretty well.
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