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?

Answer 1

[Image Analyst]

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
highestSolidity = sortedS(1);
% Get the label of the most solid blob
labelWithHighestSolidity = sortIndexes(1);

[naila]

Thank you so much for your time Sir!

[naila]

Plz Sir I want to get the solidity of squared region at the image. But your code generates Fig having just one white pixel at the centre;

help plz

[Image Analyst]

Do you have some way of getting the binary image of the blobs in the red rectangle? If so, post it, otherwise post the binary image itself.

[naila]

This is the full Image Sir; I want to calculate solidity of all the blobs in the image and then pick up just that one which has higher solidity; and show just that blob, not the full image;

Thank you so much for your time;

[naila]

</matlabcentral/answers/uploaded_files/67/binaryForm.bmp> ;

This is the full Image Sir; I want to calculate solidity of all the blobs in the image and then pick up just that one which has higher solidity; and show just that blob, not the full image;

Thank you so much for your time;

[naila]

[naila]

Please Urgent;

[Image Analyst]

Didn't my answer already do that? I presume you know how to call imread() - what else do you need?

[naila]

Sir when I run the code, and show the image by imshow() it give me a fig just having one white pixel at the mid of the fig; I need the full largest blob

[Image Analyst]

A single pixel will have maximum solidity - think about it. The largest blob will not necessarily have the highest solidity. What if the largest blob is a huge C shape? So do you want largest area? Highest Solidity? Or highest solidity for blobs bigger than a certain area? You need to define your criteria before you or I can write a program for it.

[Image Analyst]

naila: See attached file and see if it does what you want.

[naila]

Thank You very much Sir... This is all what I need...; Thanks for your time;