how to clustering/segment binary image?

I need to find an algorithm that can segement following image as circled.

I think semantic segmentation probably can do it, but I dont have enough labeled data for training.

K-mean clustering wouldent work.

Also, since all three parts are connected, regionprop dont work either.

I am apperciate if anyone could suggest any approaches that can segement images as described above.

Answer 1

[Saurav Chaudhary]

Look at the following MATLAB answer, which involves same application as you want.

https://www.mathworks.com/matlabcentral/answers/302012-how-to-cluster-a-binary-image?s_tid=answers_rc1-2_p2_MLT

Hope this helps.