Creating BackgroundSubtractorMOG2 in Android by OpenCV 3.0 RC1

Question

I'm trying to do background subtraction with MOG2 in OpenCV 3.0 on my android phone. However, it seems that there are no suitable constructor to create a new BackgroundSubtractorMOG2 in version 3.0. My code lies down here.

@Override
public void onCameraViewStarted(int width, int height) {
    mFrame = new Mat(height, width, CvType.CV_8UC4);
    mFgMaskMOG = new Mat(height, width, CvType.CV_8UC1);
    pMOG2 = new BackgroundSubtractorMOG2();
}

With these codes Android studio reminds me that the constructor has protected access. Besides, when I read java src code of BackgroundSubtractorMOG2 I find that there's one parameter for the constructor: long addr. The src code as following:

protected BackgroundSubtractorMOG2(long addr) { super(addr); }

I'm new to OpenCV4Android thus don't know how to construct such a class in java code. Any solution besides using older version of OpenCV4Android?

Answer 1

You can use this code in OpenCV 3.0.0:

BackgroundSubtractorMOG2 pMOG2 = Video.createBackgroundSubtractorMOG2();