OpenCV BackgroundSubtractor Android Детектор движения Ошибка

Question

Когда я пытаюсь сделать приложение детектора движения с помощью OpenCV в BackgroundSubtractoeMOG2 (приложение будет захватывать камеру и рисовать контуры вокруг обнаруженного движения), я получаю Error while giving argument:

MainActivity.java

package com.example.administrator.urapplication; 

import java.util.ArrayList; 
import java.util.List; 

import org.opencv.android.BaseLoaderCallback; 
import org.opencv.android.CameraBridgeViewBase.CvCameraViewFrame; 
import org.opencv.android.LoaderCallbackInterface; 
import org.opencv.android.OpenCVLoader; 
import org.opencv.core.Mat; 
import org.opencv.core.MatOfPoint; 
import org.opencv.core.Scalar; 
import org.opencv.imgproc.Imgproc; 
import org.opencv.video.BackgroundSubtractorMOG2; 
import org.opencv.android.CameraBridgeViewBase; 
import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener2; 

import android.app.Activity; 
import android.os.Bundle; 
import android.util.Log; 

import android.view.MenuItem; 
import android.view.SurfaceView; 
import android.view.WindowManager; 
import android.widget.SeekBar; 


public class MainActivity extends Activity implements CvCameraViewListener2   { 
private static final String TAG = "OCVSample::Activity"; 

private CameraBridgeViewBase mOpenCvCameraView; 
private boolean mIsJavaCamera = true; 
private MenuItem mItemSwitchCamera = null; 

private BackgroundSubtractorMOG2 sub; 
private Mat mGray; 
private Mat mRgb; 
private Mat mFGMask; 
private List<MatOfPoint> contours; 
private double lRate = 0.5; 

private SeekBar sb; 

// Initialization required by apps using OpenCV Manager 
private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) { 
    @Override 
    public void onManagerConnected(int status) { 
     switch (status) { 
      case LoaderCallbackInterface.SUCCESS: { 
       Log.i(TAG, "OpenCV loaded successfully"); 
       mOpenCvCameraView.enableView(); 
      } 
      break; 
      default: { 
       super.onManagerConnected(status); 
      } 
      break; 
     } 
    } 
}; 

public MainActivity() { 
    //Log.i(TAG, "Instantiated new " + this.getClass()); 
} 

/** 
* Called when the activity is first created. 
*/ 
public void onCreate(Bundle savedInstanceState) { 
    Log.i(TAG, "called onCreate"); 
    super.onCreate(savedInstanceState); 
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 

    setContentView(R.layout.show_camera); 

    //sets up camera 

    mOpenCvCameraView = (CameraBridgeViewBase) findViewById(R.id.show_camera_activity_java_surface_view); 
    mOpenCvCameraView.setVisibility(SurfaceView.VISIBLE); 
    mOpenCvCameraView.setCvCameraViewListener(this); 

} 

@Override 
public void onPause() { 
    super.onPause(); 
    if (mOpenCvCameraView != null) 
     mOpenCvCameraView.disableView(); 
} 

public void onResume() { 
    super.onResume(); 
    OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_3_0_0, this, mLoaderCallback); 
} 

public void onDestroy() { 
    super.onDestroy(); 
    if (mOpenCvCameraView != null) 
     mOpenCvCameraView.disableView(); 
} 

public void onCameraViewStarted(int width, int height) { 
    //creates a new BackgroundSubtractorMOG class with the arguments 
    sub = new BackgroundSubtractorMOG2(3, 4, 0.8, 0.5); 

    //creates matrices to hold the different frames 
    mRgb = new Mat(); 
    mFGMask = new Mat(); 
    mGray = new Mat(); 

    //arraylist to hold individual contours 
    contours = new ArrayList<MatOfPoint>(); 

} 

public void onCameraViewStopped() { 
} 

public Mat onCameraFrame(CvCameraViewFrame inputFrame) { 
    contours.clear(); 
    //gray frame because it requires less resource to process 
    mGray = inputFrame.gray(); 

    //this function converts the gray frame into the correct RGB format for the BackgroundSubtractorMOG apply function 
    Imgproc.cvtColor(mGray, mRgb, Imgproc.COLOR_GRAY2RGB); 

    //apply detects objects moving and produces a foreground mask 
    //the lRate updates dynamically dependent upon seekbar changes 
    sub.apply(mRgb, mFGMask, lRate); 

    //erode and dilate are used to remove noise from the foreground mask 
    Imgproc.erode(mFGMask, mFGMask, new Mat()); 
    Imgproc.dilate(mFGMask, mFGMask, new Mat()); 

    //drawing contours around the objects by first called findContours and then calling drawContours 
    //RETR_EXTERNAL retrieves only external contours 
    //CHAIN_APPROX_NONE detects all pixels for each contour 
    Imgproc.findContours(mFGMask, contours, new Mat(), Imgproc.RETR_EXTERNAL, Imgproc.CHAIN_APPROX_NONE); 

    //draws all the contours in red with thickness of 2 
    Imgproc.drawContours(mRgb, contours, -1, new Scalar(255, 0, 0), 2); 

    return mRgb; 
} 

} 

show_camera.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:orientation="vertical" android:layout_width="match_parent" 
xmlns:opencv="http://schemas.android.com/apk/res-auto" 
android:layout_height="match_parent"> 
<org.opencv.android.JavaCameraView 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:visibility="gone" 
    android:id="@+id/show_camera_activity_java_surface_view" 
    opencv:show_fps="true" 
    opencv:camera_id="any" /> 
    </LinearLayout> 

Answer 1

BackgroundSubtractorMOG2 в OpenCV3 не имеет такого конструктора, вы должны использовать BackgroundSubtractorMOG от OpenCV2.4