MATLAB: What does centroid of an image indicates exactly

centroidImage Processing Toolboxregionprops

I measured centroid of an image using regionprops. I got 14 values.. 7 rows with 2 columns… what it indicates?

Best Answer

It is the non-weighted center of your binary blobs. If you have 7 rows, then you have 7 blobs. Did you look at the help? Because it's explained in the help:

'Centroid' – 1-by-Q vector that specifies the center of mass of the region. Note that the first element of Centroid is the horizontal coordinate(or x-coordinate) of the center of mass, and the second element is the vertical coordinate (or y-coordinate).  All other elements of Centroid are in order of dimension.

I'm pretty sure you must have seen that already, so what in there does not answer your question?

Related Solutions

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

Use bwlabel() and ismember

[labeledImage, numRegions] = bwlabel(binaryImage);
props = regionprops(labeledImage, 'Area')
% Compute all the areas.
allAreas = [props.Area]
% Display each blob in its own figure.
for k = 1 : numRegions
    thisRegion = ismember(labeledImage, k);
    figure;
    imshow(thisRegion);
    drawnow;
end

MATLAB: How to calculate area of an irregular shape region in a binary image

Try this:

props = regionprops(binaryImage, 'Area');
allAreas = [props.Area]

Best Answer

Related Solutions

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

MATLAB: How to calculate area of an irregular shape region in a binary image

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