How to get croped image captured from CAMERA

Question

How to get the crop image which are bounded within a section which are shown in Image.

I want my app to capture an image of a book page, which contain 4 image patterns at the corners. I want it to first match those pattern and then to remove all the part which is not available inside the boundary of those 4 images.

Answer 1

This tutorial does it all, toy can download the sources as well:http://mobile.tutsplus.com/tutorials/android/capture-and-crop-an-image-with-the-device-camera/

Answer 2

I recommend you to use OpenCV for Android library.

Take a look at these SO discussions:

• Detecting paper on image: OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection
• Detecting logo: Logo recognition - how to improve performance

Answer 3

Do this,

 Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
 intent.putExtra("crop", "true");
 startActivityForResult(intent, TAKE_PICTURE);