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mehrang's profile - activity

2015-07-11 02:28:29 -0500 answered a question Why isn't opencv eye detection working properly?

The eye is less than the face features.So its accuracy is less. Better than the other methods used to validate your eyes(for example SVM, neural network, size eyes and ...)

2015-07-10 13:21:48 -0500 asked a question how to increase fps camera?

hi, I wrote a program with opencv's camera(CvCameraViewListener2) but my program is running so slowly(max 20 fps) on LG G3. However,my program has not any processing. How can i increase fps or fix it on 24 or 25 fps?

    public class activity extends Activity implements CvCameraViewListener2 {
    private static final String    TAG                 = "OCVSample::Activity";
    private CameraBridgeViewBase   mOpenCvCameraView;
    private Mat                    mRgba;
    private Mat                    mGray;

    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 activity() {

        Log.i(TAG, "Instantiated new " + this.getClass());
    }

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        Log.i(TAG, "called onCreate");

        super.onCreate(savedInstanceState);
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

        setContentView(R.layout.face_detect_surface_view);
        mOpenCvCameraView = (CameraBridgeViewBase) findViewById(R.id.fd_activity_surface_view);

        mOpenCvCameraView.setCvCameraViewListener(this); 

        mOpenCvCameraView.setMaxFrameSize(320, 240);
        mOpenCvCameraView.enableFpsMeter();
        Log.i(TAG, "setMaxFrameSize");
    }

    @Override
    public void onPause()
    {
        Log.i(TAG, "called onPause");
        super.onPause();
        if (mOpenCvCameraView != null)
            mOpenCvCameraView.disableView();
    }

    @Override
    public void onResume()
    {
        Log.i(TAG, "called onResume");
        super.onResume();
        OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_9, this, mLoaderCallback);
    }

    public void onDestroy() {
        Log.i(TAG, "called onDestroy");
        super.onDestroy();
        if (mOpenCvCameraView != null)
            mOpenCvCameraView.disableView();
    }

    public void onCameraViewStarted(int width, int height) {
        Log.i(TAG, "called onCameraViewStarted");
        mGray = new Mat();
        mRgba = new Mat();
    }

    public void onCameraViewStopped() {
        Log.i(TAG, "called onCameraViewStopped");
        mGray.release();
        mRgba.release();
    }

    public Mat onCameraFrame(CvCameraViewFrame inputFrame) {
        Log.i(TAG, "called onCameraFrame");

        mRgba = inputFrame.rgba();
        mGray = inputFrame.gray();
        return mGray;
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        Log.i(TAG, "called onCreateOptionsMenu");


        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        Log.i(TAG, "called onOptionsItemSelected; selected item: " + item);

        return true;
    }

}