MATLAB: How to select an object of a bw image

Image Processing Toolboximage segmentationselecting an object

I have a bw image with two blobs. I want to calculate area centroid etc. Of each individually….how can i achieve this??!

Best Answer

With regionprops():

labeledImage = bwlabel(binaryImage);
measurements = regionprops(labeledImage, 'Area');
allAreas = [measurements.Area]

See my Image Segmentation Tutorial for a full demo: http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862

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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

[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: Gray to BW

This is an excellent demo. But I use a selected area of active contour segmentation. I do not know how I took advantage of it.

Output of the segmentation are xy coordinates.

Best Answer

Related Solutions

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

MATLAB: Gray to BW

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