camera calibration in android

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HI all.. i am working with android OpenCV. i am using the android camera for live view capturing and processing images but images are somewhat distorted so i need to do the camera calibration for android camera. I am able to do the camera calibration on desktop using chess-board pattern but i am not able to do it in android . Is there are some good tutorials or sample code by which i can understand the camera calibration in android using OpenCV.

Thanks in Advance .....