How to calculate solidity of different shapes

I have an image which contains different shapes:

I want to calculate the solidity of each shape individually and pick the one which has greatest solidity;

Can any one help me regarding this?

NOTE:-

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Did you use regionprops() to get all of them? If so, then just sort

% Label the binary image.
labeledImage = bwlabel(binaryImage);
% Measure the solidity of all the blobs.
measurements = regionprops(labeledImage, 'Solidity');
% Sort in oder of decreasing solidity.
[sortedS, sortIndexes] = sort([measurements.Solidity], 'descend');
% Get the solidity of the most solid blob

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How to calculate solidity of different shapes

How to calculate solidity of different shapes