GrabCut Effect on Captured Image in Android using opencv

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I am working on an android project using opencv.I'm following some tutorial in internet ,have done "How to capture Image using Opencv,show in ImageView,Here is the Code for that ,

https://gist.github.com/manikavi/46cb...

Output Of above code is

My Next requirement is ,Just Select & Cut affected wound part and measure size of the wound,I have done lot of research for this,but i'm not getting do,Can i get help from Some one ?