MATLAB: How to combine regions of regionprops

image processingImage Processing Toolbox

Hello, I use regionprops to get different regions within an image.

Obj = regionprops(~bw,{'Area','Extrema','Boundingbox','MajorAxisLength','MinorAxisLength','ConvexHull','Centroid'});

According to some assumptions I would like to recombine some Objs of the struct

For example I would like to combine 2 objects where the y-coordinate of the centroid is quite similar. This means, that the some values, Area, Centroid, Bounding Box have to be recalculated. What would be the correct way to do that?

Thanks

Best Answer

I believe you can set the label to be the same. For example, make blob 3 have a label of 2 and then blob 2 will now be the old blob 2 and the old blob 3

labeledImage(labeledImage == 3) = 2;  % Merge blob 3 into blob 2.

Now call regionprops

props = regionprops(labeledImage, .........

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MATLAB: How can i separate all the connected regions in a binary image and display them individually.

Use bwlabel() and ismember

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% Display each blob in its own figure.
for k = 1 : numRegions
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Your variable "a" is already a matrix, one of size 1 by 2. You can use a(1) and a(2) to access the parts.

Best Answer

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MATLAB: How can i separate all the connected regions in a binary image and display them individually.

MATLAB: I have a variable ‘a’ that contains x and y coordinate values as 365.5 and 213.5 .How can i read them to an array or matrix. ??

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