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Can OpenCV resolve this in Android

Hello guys. I'm an Chinese in China,so I am sorry that my English isn't good..and some word below come from Google Translate...

My problem is: if offer a picture like this:

image description

I need to get the phone screen position like this:

image description please pay attention to the red lines.(need split out the region wrapped by schematic red line)

I tried to resolve in traditional way without OpenCV and I found it's hard for me to do this. I want ask whether OpenCV can do this good in Android.I am a novice in openCV.Where to start dealing with this issue in openCV.

I do not know whether I express clearly what I mean.Thanks for your answer.谢谢