Tingke's profile - activity

Hi There!

I am just following the OpenCV Android tutorial on the official webpage of OpenCV: http://docs.opencv.org/2.4.3/doc/tuto... and I mainly just copy-pasted the code but it doesn't seem to work. I keep getting the error: Error signal 11 (SIGSEGV) and it is always doing the initialization of a VideoCapture object. All help is much appreciated! Here is the activity:

public class helloWorldTutorial extends Activity {
private HelloOpenCVView mView;
private Context mContext;
public void onCreate (Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    mContext = this;
}

public String TAG = "OpenCVLoading";
private BaseLoaderCallback mOpenCVCallBack = new BaseLoaderCallback(this) {
    @Override
    public void onManagerConnected(int status) {
        switch (status) {
            case LoaderCallbackInterface.SUCCESS:
            {
                Log.i(TAG, "OpenCV loaded successfully");
                mView = new HelloOpenCVView(mContext);
                setContentView (mView);
                if( !mView.cameraOpen() ) {
                    // MessageBox and exit app
                    AlertDialog ad = new AlertDialog.Builder(mContext).create();
                    ad.setCancelable(false); // This blocks the "BACK" button
                    ad.setMessage("Fatal error: can't open camera!");
                    ad.setButton("OK", new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int which) {
                            dialog.dismiss();
                            finish();
                        }
                    });
                    ad.show();
                }
            } break;
            default:
            {
                super.onManagerConnected(status);
                Log.i(TAG, "OpenCV loaded Unsuccessfully");
            } break;
        }
    }
};

protected void onResume()
{
    Log.i(TAG, "called onResume");
    super.onResume();

    Log.i(TAG, "Trying to load OpenCV library");
    if (!OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_2, this, mOpenCVCallBack))
    {
        Log.e(TAG, "Cannot connect to OpenCV Manager");
    }
}


// Here is the cameraOpen() function in the view class
public boolean cameraOpen() {
    synchronized (this) {
        cameraRelease();
        Log.e("HelloOpenCVView", "init vidCap");
        mCamera = new VideoCapture(-1);
        Log.e("HelloOpenCVView", "ugh");
        if (!mCamera.isOpened()) {
            mCamera.release();
            mCamera = null;
            Log.e("HelloOpenCVView", "Failed to open native camera");
            return false;
        }
    }
    return true;
}

    //Here is the log, the error being on the last line
    08-04 08:04:11.493    8506-8506/com.example.kevin.prototypev00 I/OpenCVLoading﹕ OpenCV loaded successfully
    08-04 08:04:11.493    8506-8506/com.example.kevin.prototypev00 E/HelloOpenCVView﹕ init vidCap
    08-04 08:04:11.493    8506-8506/com.example.kevin.prototypev00 D/OpenCV::camera﹕ CvCapture_Android::CvCapture_Android(-1)
    08-04 08:04:11.503    8506-8506/com.example.kevin.prototypev00 D/OpenCV::camera﹕ Library name: libopencv_java.so
    08-04 08:04:11.503    8506-8506/com.example.kevin.prototypev00 D/OpenCV::camera﹕ Library base address: 0x79e28000
    08-04 08:04:11.523    8506-8506/com.example.kevin.prototypev00 D/OpenCV::camera﹕ Libraries folder found: /data/app-lib/org.opencv.engine-1/
    08-04 08:04:11.523    8506-8506/com.example.kevin.prototypev00 D/OpenCV::camera﹕ CameraWrapperConnector::connectToLib: folderPath=/data/app-lib/org.opencv.engine-1/
    08-04 08:04:11.523    8506-8506/com.example.kevin.prototypev00 E/OpenCV::camera﹕ ||libnative_camera_r4.3.0.so
    08-04 08:04:11.523    8506-8506/com.example.kevin.prototypev00 E/OpenCV::camera﹕ ||libnative_camera_r4.0.3.so
    08-04 08:04:11.523    8506-8506/com.example.kevin.prototypev00 E/OpenCV::camera﹕ ||libnative_camera_r4.4.0.so
    08-04 08:04:11.523    8506-8506/com.example.kevin.prototypev00 E/OpenCV::camera﹕ ||libnative_camera_r2.3.3.so
    08-04 08:04:11.523    8506-8506/com.example.kevin.prototypev00 E/OpenCV::camera﹕ ||libnative_camera_r4.2.0.so
    08-04 08:04:11.523    8506-8506/com.example.kevin.prototypev00 E/OpenCV::camera﹕ ||libnative_camera_r2.2.0.so
    08-04 08:04:11 ...