how to calculate the area of different labels and remove the labels with smaller area??
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santosh patil
le 2 Avr 2015
Réponse apportée : Image Analyst
le 3 Avr 2015
i labeled an image using CC = bwconncomp(BW).how to find area of different labels?? and how do i remove labels with smaller area???
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Michael Haderlein
le 2 Avr 2015
Modifié(e) : Michael Haderlein
le 2 Avr 2015
CC is a struct including the field PixelIdxList. If you define the area as number of pixels, you just need the number of elements of each cell:
elemsize=cellfun(@numel,CC.PixelIdxList);
To remove the small ones (I define "small" as "less than 100 pixels"):
BW2=BW;
BW2(vertcat((CC.PixelIdxList{cellfun(@numel,CC.PixelIdxList)<100})))=0;
You can of course do this without copying BW (just ignore the first line and use BW instead of BW2 in the second line).
Edit: If you also want to remove these from CC:
CC.PixelIdxList(cellfun(@numel,CC.PixelIdxList)<100)=[];
CC.NumObjects=numel(CC.PixelIdxList);
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Image Analyst
le 3 Avr 2015
This is what's done in my Image Processing Tutorial, attached.
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