Hello, I hope to use the facetime camera with OpenCV4Android 2.4.3. I am able to run the sample of Sample2NativeCamera (org.opencv.samples.tutorial2.Sample2NativeCamera). How can I let it use the facetime camera? Thanks.
I have copied the tutorial code below.
package org.opencv.samples.tutorial2;
import org.opencv.android.BaseLoaderCallback;
import org.opencv.android.LoaderCallbackInterface;
import org.opencv.android.OpenCVLoader;
import org.opencv.core.Core;
import org.opencv.core.CvType;
import org.opencv.core.Mat;
import org.opencv.core.Point;
import org.opencv.core.Scalar;
import org.opencv.android.CameraBridgeViewBase;
import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener;
import org.opencv.highgui.Highgui;
import org.opencv.imgproc.Imgproc;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.WindowManager;
public class Sample2NativeCamera extends Activity implements CvCameraViewListener {
private static final String TAG = "OCVSample::Activity";
public static final int VIEW_MODE_RGBA = 0;
public static final int VIEW_MODE_GRAY = 1;
public static final int VIEW_MODE_CANNY = 2;
private static int viewMode = VIEW_MODE_RGBA;
private MenuItem mItemPreviewRGBA;
private MenuItem mItemPreviewGray;
private MenuItem mItemPreviewCanny;
private Mat mRgba;
private Mat mIntermediateMat;
private CameraBridgeViewBase mOpenCvCameraView;
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 Sample2NativeCamera() {
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.tutorial2_surface_view);
mOpenCvCameraView = (CameraBridgeViewBase) findViewById(R.id.tutorial2_activity_surface_view);
mOpenCvCameraView.setCvCameraViewListener(this);
}
@Override
public void onPause()
{
if (mOpenCvCameraView != null)
mOpenCvCameraView.disableView();
super.onPause();
}
@Override
public void onResume()
{
super.onResume();
OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_3, this, mLoaderCallback);
}
public void onDestroy() {
super.onDestroy();
if (mOpenCvCameraView != null)
mOpenCvCameraView.disableView();
}
public void onCameraViewStarted(int width, int height) {
mRgba = new Mat(height, width, CvType.CV_8UC4);
mIntermediateMat = new Mat(height, width, CvType.CV_8UC4);
}
public void onCameraViewStopped() {
mRgba.release();
mIntermediateMat.release();
}
public Mat onCameraFrame(Mat inputFrame) {
switch (Sample2NativeCamera.viewMode) {
case Sample2NativeCamera.VIEW_MODE_GRAY:
{
Imgproc.cvtColor(inputFrame, mRgba, Imgproc.COLOR_GRAY2RGBA, 4);
} break;
case Sample2NativeCamera.VIEW_MODE_RGBA:
{
inputFrame.copyTo(mRgba);
Core.putText(mRgba, "OpenCV+Android", new Point(10, inputFrame.rows() - 10), 3, 1, new Scalar(255, 0, 0, 255), 2);
} break;
case Sample2NativeCamera.VIEW_MODE_CANNY:
{
Imgproc.Canny(inputFrame, mIntermediateMat, 80, 100);
Imgproc.cvtColor(mIntermediateMat, mRgba, Imgproc.COLOR_GRAY2BGRA, 4);
} break;
}
return mRgba;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
Log.i(TAG, "called onCreateOptionsMenu");
mItemPreviewRGBA = menu.add("Preview RGBA");
mItemPreviewGray = menu.add("Preview GRAY");
mItemPreviewCanny = menu.add("Canny");
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
Log.i(TAG, "called onOptionsItemSelected; selected item: " + item);
if (item == mItemPreviewRGBA)
{
mOpenCvCameraView.SetCaptureFormat(Highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA);
viewMode = VIEW_MODE_RGBA;
}
else if (item == mItemPreviewGray)
{
mOpenCvCameraView.SetCaptureFormat(Highgui.CV_CAP_ANDROID_GREY_FRAME);
viewMode = VIEW_MODE_GRAY;
}
else if (item == mItemPreviewCanny)
{
mOpenCvCameraView.SetCaptureFormat(Highgui.CV_CAP_ANDROID_GREY_FRAME);
viewMode = VIEW_MODE_CANNY;
}
return true;
}
}
---------------------------
He Jibo
Assistant Professor
Department of Psychology,
Wichita State University
website:
www.hejibo.info