Get values inside connected components?

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Mikhail Kandel
Mikhail Kandel 2014-7-11
回答： Image Analyst 2014-7-12
me=zeros(5,5,5);
me(1:2,1:2,1:2)=rand(2,2,2);
me((end-1):end,(end-1):end,(end-1):end)=rand(2,2,2);
CC = bwconncomp(me);
STATS=regionprops(CC,me,'Image');
% Returns a binary mask,
% but I want the values inside `me`
% without needing to use the old bwlabeln interface
I want to eventually process each segment as a slice along the Z axis, and using a whole array for this is computationally expensive.
I have tried to use a bounding box but the box often has overlapping segments in 3d.

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回答（1 个）

Image Analyst
Image Analyst 2014-7-12
I'm not sure how to answer because I don't know what you want. Both bwconncomp() and regionprops() gives you the linear index of each labeled component - so just use it. If you want to get just one slice from the object, then use
cc = bwconncomp(binaryImage); % Do connected components analysis.
labeledImage = labelMatrix(cc); % Get the labeled image.
oneSlice = labeledImage(:,:,zValue); % Extract just one slice of it.
statsForOneSlice = regionprops(oneSlice, me, 'all'); % Measure the single slice.
Or something like that. Be more specific if you want better help.

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