Face detection sample ported on new framework.
This commit is contained in:
Alexander Smorkalov
committed by
Andrey Kamaev
Andrey Kamaev
parent
d9ea16ce57
commit
2fd8b51a26
@@ -0,0 +1,11 @@
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:tools="http://schemas.android.com/tools"
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android:layout_width="match_parent"
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android:layout_height="match_parent" >
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<org.opencv.framework.OpenCvJavaCameraView
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android:layout_width="fill_parent"
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android:layout_height="fill_parent"
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android:id="@+id/fd_activity_surface_view" />
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</LinearLayout>
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@@ -1,12 +1,26 @@
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package org.opencv.samples.fd;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import org.opencv.android.BaseLoaderCallback;
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import org.opencv.android.LoaderCallbackInterface;
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import org.opencv.android.OpenCVLoader;
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import org.opencv.core.Core;
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import org.opencv.core.Mat;
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import org.opencv.core.MatOfRect;
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import org.opencv.core.Rect;
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import org.opencv.core.Scalar;
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import org.opencv.core.Size;
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import org.opencv.framework.OpenCvJavaCameraView;
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import org.opencv.framework.OpenCvCameraBridgeViewBase.CvCameraViewListener;
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import org.opencv.imgproc.Imgproc;
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import org.opencv.objdetect.CascadeClassifier;
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import android.app.Activity;
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import android.app.AlertDialog;
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import android.content.DialogInterface;
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import android.content.Context;
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import android.os.Bundle;
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import android.util.Log;
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import android.view.Menu;
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@@ -14,19 +28,34 @@ import android.view.MenuItem;
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import android.view.Window;
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import android.view.WindowManager;
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public class FdActivity extends Activity {
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private static final String TAG = "OCVSample::Activity";
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public class FdActivity extends Activity implements CvCameraViewListener {
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private MenuItem mItemFace50;
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private MenuItem mItemFace40;
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private MenuItem mItemFace30;
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private MenuItem mItemFace20;
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private MenuItem mItemType;
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private int mDetectorType = 0;
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private String[] mDetectorName;
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private FdView mView;
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private static final String TAG = "OCVSample::Activity";
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private static final Scalar FACE_RECT_COLOR = new Scalar(0, 255, 0, 255);
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public static final int JAVA_DETECTOR = 0;
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public static final int NATIVE_DETECTOR = 1;
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private BaseLoaderCallback mOpenCVCallBack = new BaseLoaderCallback(this) {
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private MenuItem mItemFace50;
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private MenuItem mItemFace40;
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private MenuItem mItemFace30;
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private MenuItem mItemFace20;
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private MenuItem mItemType;
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private Mat mRgba;
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private Mat mGray;
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private File mCascadeFile;
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private CascadeClassifier mJavaDetector;
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private DetectionBasedTracker mNativeDetector;
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private int mDetectorType = JAVA_DETECTOR;
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private String[] mDetectorName;
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private float mRelativeFaceSize = 0;
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private int mAbsoluteFaceSize = 0;
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private OpenCvJavaCameraView mOpenCvCameraView;
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private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) {
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@Override
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public void onManagerConnected(int status) {
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switch (status) {
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@@ -34,44 +63,41 @@ public class FdActivity extends Activity {
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{
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Log.i(TAG, "OpenCV loaded successfully");
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// Load native libs after OpenCV initialization
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// Load native library after(!) OpenCV initialization
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System.loadLibrary("detection_based_tracker");
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// Create and set View
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mView = new FdView(mAppContext);
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mView.setDetectorType(mDetectorType);
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mView.setMinFaceSize(0.2f);
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setContentView(mView);
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try {
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// load cascade file from application resources
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InputStream is = getResources().openRawResource(R.raw.lbpcascade_frontalface);
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File cascadeDir = getDir("cascade", Context.MODE_PRIVATE);
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mCascadeFile = new File(cascadeDir, "lbpcascade_frontalface.xml");
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FileOutputStream os = new FileOutputStream(mCascadeFile);
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// Check native OpenCV camera
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if( !mView.openCamera() ) {
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AlertDialog ad = new AlertDialog.Builder(mAppContext).create();
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ad.setCancelable(false); // This blocks the 'BACK' button
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ad.setMessage("Fatal error: can't open camera!");
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ad.setButton(AlertDialog.BUTTON_POSITIVE, "OK", new DialogInterface.OnClickListener() {
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public void onClick(DialogInterface dialog, int which) {
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dialog.dismiss();
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finish();
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}
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});
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ad.show();
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}
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} break;
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/** OpenCV loader cannot start Google Play **/
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case LoaderCallbackInterface.MARKET_ERROR:
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{
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Log.d(TAG, "Google Play service is not accessible!");
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AlertDialog MarketErrorMessage = new AlertDialog.Builder(mAppContext).create();
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MarketErrorMessage.setTitle("OpenCV Manager");
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MarketErrorMessage.setMessage("Google Play service is not accessible!\nTry to install the 'OpenCV Manager' and the appropriate 'OpenCV binary pack' APKs from OpenCV SDK manually via 'adb install' command.");
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MarketErrorMessage.setCancelable(false); // This blocks the 'BACK' button
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MarketErrorMessage.setButton(AlertDialog.BUTTON_POSITIVE, "OK", new DialogInterface.OnClickListener() {
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public void onClick(DialogInterface dialog, int which) {
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finish();
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byte[] buffer = new byte[4096];
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int bytesRead;
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while ((bytesRead = is.read(buffer)) != -1) {
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os.write(buffer, 0, bytesRead);
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}
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});
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MarketErrorMessage.show();
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is.close();
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os.close();
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mJavaDetector = new CascadeClassifier(mCascadeFile.getAbsolutePath());
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if (mJavaDetector.empty()) {
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Log.e(TAG, "Failed to load cascade classifier");
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mJavaDetector = null;
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} else
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Log.i(TAG, "Loaded cascade classifier from " + mCascadeFile.getAbsolutePath());
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mNativeDetector = new DetectionBasedTracker(mCascadeFile.getAbsolutePath(), 0);
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cascadeDir.delete();
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} catch (IOException e) {
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e.printStackTrace();
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Log.e(TAG, "Failed to load cascade. Exception thrown: " + e);
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}
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mOpenCvCameraView.enableView();
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} break;
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default:
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{
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@@ -83,30 +109,12 @@ public class FdActivity extends Activity {
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public FdActivity() {
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mDetectorName = new String[2];
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mDetectorName[FdView.JAVA_DETECTOR] = "Java";
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mDetectorName[FdView.NATIVE_DETECTOR] = "Native (tracking)";
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mDetectorName[JAVA_DETECTOR] = "Java";
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mDetectorName[NATIVE_DETECTOR] = "Native (tracking)";
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Log.i(TAG, "Instantiated new " + this.getClass());
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}
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@Override
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protected void onPause() {
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Log.i(TAG, "called onPause");
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if (null != mView)
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mView.releaseCamera();
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super.onPause();
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}
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@Override
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protected void onResume() {
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Log.i(TAG, "called onResume");
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super.onResume();
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Log.i(TAG, "Trying to load OpenCV library");
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if (!OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_2, this, mOpenCVCallBack)) {
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Log.e(TAG, "Cannot connect to OpenCV Manager");
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}
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}
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/** Called when the activity is first created. */
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@Override
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public void onCreate(Bundle savedInstanceState) {
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@@ -114,6 +122,75 @@ public class FdActivity extends Activity {
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super.onCreate(savedInstanceState);
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requestWindowFeature(Window.FEATURE_NO_TITLE);
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getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
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setContentView(R.layout.face_detect_surface_view);
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mOpenCvCameraView = (OpenCvJavaCameraView)findViewById(R.id.fd_activity_surface_view);
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mOpenCvCameraView.setCvCameraViewListener(this);
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}
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@Override
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public void onPause()
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{
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mOpenCvCameraView.disableView();
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super.onPause();
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}
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@Override
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public void onResume()
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{
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super.onResume();
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OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_2, this, mLoaderCallback);
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}
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public void onDestroy() {
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super.onDestroy();
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mOpenCvCameraView.disableView();
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}
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public void onCameraViewStarted(int width, int height) {
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mGray = new Mat();
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mRgba = new Mat();
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}
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public void onCameraViewStopped() {
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mGray.release();
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mRgba.release();
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}
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public Mat onCameraFrame(Mat inputFrame) {
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inputFrame.copyTo(mRgba);
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Imgproc.cvtColor(inputFrame, mGray, Imgproc.COLOR_RGBA2GRAY);
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if (mAbsoluteFaceSize == 0) {
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int height = mGray.rows();
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if (Math.round(height * mRelativeFaceSize) > 0) {
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mAbsoluteFaceSize = Math.round(height * mRelativeFaceSize);
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}
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mNativeDetector.setMinFaceSize(mAbsoluteFaceSize);
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}
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MatOfRect faces = new MatOfRect();
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if (mDetectorType == JAVA_DETECTOR) {
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if (mJavaDetector != null)
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mJavaDetector.detectMultiScale(mGray, faces, 1.1, 2, 2, // TODO: objdetect.CV_HAAR_SCALE_IMAGE
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new Size(mAbsoluteFaceSize, mAbsoluteFaceSize), new Size());
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}
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else if (mDetectorType == NATIVE_DETECTOR) {
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if (mNativeDetector != null)
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mNativeDetector.detect(mGray, faces);
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}
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else {
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Log.e(TAG, "Detection method is not selected!");
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}
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Rect[] facesArray = faces.toArray();
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for (int i = 0; i < facesArray.length; i++)
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Core.rectangle(mRgba, facesArray[i].tl(), facesArray[i].br(), FACE_RECT_COLOR, 3);
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return mRgba;
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}
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@Override
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@@ -131,18 +208,37 @@ public class FdActivity extends Activity {
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public boolean onOptionsItemSelected(MenuItem item) {
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Log.i(TAG, "called onOptionsItemSelected; selected item: " + item);
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if (item == mItemFace50)
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mView.setMinFaceSize(0.5f);
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setMinFaceSize(0.5f);
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else if (item == mItemFace40)
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mView.setMinFaceSize(0.4f);
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setMinFaceSize(0.4f);
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else if (item == mItemFace30)
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mView.setMinFaceSize(0.3f);
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setMinFaceSize(0.3f);
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else if (item == mItemFace20)
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mView.setMinFaceSize(0.2f);
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setMinFaceSize(0.2f);
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else if (item == mItemType) {
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mDetectorType = (mDetectorType + 1) % mDetectorName.length;
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item.setTitle(mDetectorName[mDetectorType]);
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mView.setDetectorType(mDetectorType);
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setDetectorType(mDetectorType);
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}
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return true;
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}
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private void setMinFaceSize(float faceSize) {
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mRelativeFaceSize = faceSize;
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mAbsoluteFaceSize = 0;
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}
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private void setDetectorType(int type) {
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if (mDetectorType != type) {
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mDetectorType = type;
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if (type == NATIVE_DETECTOR) {
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Log.i(TAG, "Detection Based Tracker enabled");
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mNativeDetector.start();
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} else {
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Log.i(TAG, "Cascade detector enabled");
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mNativeDetector.stop();
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}
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}
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}
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}
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@@ -1,175 +0,0 @@
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package org.opencv.samples.fd;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import org.opencv.android.Utils;
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import org.opencv.core.Core;
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import org.opencv.core.Mat;
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import org.opencv.core.MatOfRect;
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import org.opencv.core.Rect;
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import org.opencv.core.Scalar;
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import org.opencv.core.Size;
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import org.opencv.highgui.Highgui;
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import org.opencv.highgui.VideoCapture;
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import org.opencv.objdetect.CascadeClassifier;
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import android.content.Context;
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import android.graphics.Bitmap;
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import android.util.Log;
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import android.view.SurfaceHolder;
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class FdView extends SampleCvViewBase {
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private static final String TAG = "OCVSample::View";
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private Mat mRgba;
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private Mat mGray;
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private File mCascadeFile;
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private CascadeClassifier mJavaDetector;
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private DetectionBasedTracker mNativeDetector;
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private static final Scalar FACE_RECT_COLOR = new Scalar(0, 255, 0, 255);
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public static final int JAVA_DETECTOR = 0;
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public static final int NATIVE_DETECTOR = 1;
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private int mDetectorType = JAVA_DETECTOR;
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private float mRelativeFaceSize = 0;
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private int mAbsoluteFaceSize = 0;
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public void setMinFaceSize(float faceSize) {
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mRelativeFaceSize = faceSize;
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mAbsoluteFaceSize = 0;
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}
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public void setDetectorType(int type) {
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if (mDetectorType != type) {
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mDetectorType = type;
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if (type == NATIVE_DETECTOR) {
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Log.i(TAG, "Detection Based Tracker enabled");
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mNativeDetector.start();
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} else {
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Log.i(TAG, "Cascade detector enabled");
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mNativeDetector.stop();
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}
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}
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}
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public FdView(Context context) {
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super(context);
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try {
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// load cascade file from application resources
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InputStream is = context.getResources().openRawResource(R.raw.lbpcascade_frontalface);
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File cascadeDir = context.getDir("cascade", Context.MODE_PRIVATE);
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mCascadeFile = new File(cascadeDir, "lbpcascade_frontalface.xml");
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FileOutputStream os = new FileOutputStream(mCascadeFile);
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byte[] buffer = new byte[4096];
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int bytesRead;
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while ((bytesRead = is.read(buffer)) != -1) {
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os.write(buffer, 0, bytesRead);
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}
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is.close();
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os.close();
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mJavaDetector = new CascadeClassifier(mCascadeFile.getAbsolutePath());
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if (mJavaDetector.empty()) {
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Log.e(TAG, "Failed to load cascade classifier");
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mJavaDetector = null;
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} else
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Log.i(TAG, "Loaded cascade classifier from " + mCascadeFile.getAbsolutePath());
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mNativeDetector = new DetectionBasedTracker(mCascadeFile.getAbsolutePath(), 0);
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cascadeDir.delete();
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} catch (IOException e) {
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e.printStackTrace();
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Log.e(TAG, "Failed to load cascade. Exception thrown: " + e);
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}
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Log.i(TAG, "Instantiated new " + this.getClass());
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}
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@Override
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public void surfaceCreated(SurfaceHolder holder) {
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Log.i(TAG, "called surfaceCreated");
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synchronized (this) {
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// initialize Mats before usage
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mGray = new Mat();
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mRgba = new Mat();
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}
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super.surfaceCreated(holder);
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}
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@Override
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protected Bitmap processFrame(VideoCapture capture) {
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capture.retrieve(mRgba, Highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA);
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capture.retrieve(mGray, Highgui.CV_CAP_ANDROID_GREY_FRAME);
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if (mAbsoluteFaceSize == 0) {
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int height = mGray.rows();
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if (Math.round(height * mRelativeFaceSize) > 0) {
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mAbsoluteFaceSize = Math.round(height * mRelativeFaceSize);
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}
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mNativeDetector.setMinFaceSize(mAbsoluteFaceSize);
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}
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MatOfRect faces = new MatOfRect();
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if (mDetectorType == JAVA_DETECTOR) {
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if (mJavaDetector != null)
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mJavaDetector.detectMultiScale(mGray, faces, 1.1, 2, 2, // TODO: objdetect.CV_HAAR_SCALE_IMAGE
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new Size(mAbsoluteFaceSize, mAbsoluteFaceSize), new Size());
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}
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else if (mDetectorType == NATIVE_DETECTOR) {
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if (mNativeDetector != null)
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mNativeDetector.detect(mGray, faces);
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}
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else {
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Log.e(TAG, "Detection method is not selected!");
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}
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Rect[] facesArray = faces.toArray();
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for (int i = 0; i < facesArray.length; i++)
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Core.rectangle(mRgba, facesArray[i].tl(), facesArray[i].br(), FACE_RECT_COLOR, 3);
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Bitmap bmp = Bitmap.createBitmap(mRgba.cols(), mRgba.rows(), Bitmap.Config.ARGB_8888);
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try {
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Utils.matToBitmap(mRgba, bmp);
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} catch(Exception e) {
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Log.e(TAG, "Utils.matToBitmap() throws an exception: " + e.getMessage());
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bmp.recycle();
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bmp = null;
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}
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return bmp;
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}
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@Override
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public void run() {
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super.run();
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synchronized (this) {
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// Explicitly deallocate Mats
|
||||
if (mRgba != null)
|
||||
mRgba.release();
|
||||
if (mGray != null)
|
||||
mGray.release();
|
||||
if (mCascadeFile != null)
|
||||
mCascadeFile.delete();
|
||||
if (mNativeDetector != null)
|
||||
mNativeDetector.release();
|
||||
|
||||
mRgba = null;
|
||||
mGray = null;
|
||||
mCascadeFile = null;
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -1,123 +0,0 @@
|
||||
package org.opencv.samples.fd;
|
||||
|
||||
import java.util.List;
|
||||
|
||||
import org.opencv.core.Size;
|
||||
import org.opencv.highgui.VideoCapture;
|
||||
import org.opencv.highgui.Highgui;
|
||||
|
||||
import android.content.Context;
|
||||
import android.graphics.Bitmap;
|
||||
import android.graphics.Canvas;
|
||||
import android.util.Log;
|
||||
import android.view.SurfaceHolder;
|
||||
import android.view.SurfaceView;
|
||||
|
||||
public abstract class SampleCvViewBase extends SurfaceView implements SurfaceHolder.Callback, Runnable {
|
||||
private static final String TAG = "OCVSample::BaseView";
|
||||
|
||||
private SurfaceHolder mHolder;
|
||||
private VideoCapture mCamera;
|
||||
private FpsMeter mFps;
|
||||
|
||||
public SampleCvViewBase(Context context) {
|
||||
super(context);
|
||||
mHolder = getHolder();
|
||||
mHolder.addCallback(this);
|
||||
mFps = new FpsMeter();
|
||||
Log.i(TAG, "Instantiated new " + this.getClass());
|
||||
}
|
||||
|
||||
public synchronized boolean openCamera() {
|
||||
Log.i(TAG, "Opening Camera");
|
||||
mCamera = new VideoCapture(Highgui.CV_CAP_ANDROID);
|
||||
if (!mCamera.isOpened()) {
|
||||
releaseCamera();
|
||||
Log.e(TAG, "Can't open native camera");
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
public synchronized void releaseCamera() {
|
||||
Log.i(TAG, "Releasing Camera");
|
||||
if (mCamera != null) {
|
||||
mCamera.release();
|
||||
mCamera = null;
|
||||
}
|
||||
}
|
||||
|
||||
public synchronized void setupCamera(int width, int height) {
|
||||
if (mCamera != null && mCamera.isOpened()) {
|
||||
Log.i(TAG, "Setup Camera - " + width + "x" + height);
|
||||
List<Size> sizes = mCamera.getSupportedPreviewSizes();
|
||||
int mFrameWidth = width;
|
||||
int mFrameHeight = height;
|
||||
|
||||
// selecting optimal camera preview size
|
||||
{
|
||||
double minDiff = Double.MAX_VALUE;
|
||||
for (Size size : sizes) {
|
||||
if (Math.abs(size.height - height) < minDiff) {
|
||||
mFrameWidth = (int) size.width;
|
||||
mFrameHeight = (int) size.height;
|
||||
minDiff = Math.abs(size.height - height);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
mCamera.set(Highgui.CV_CAP_PROP_FRAME_WIDTH, mFrameWidth);
|
||||
mCamera.set(Highgui.CV_CAP_PROP_FRAME_HEIGHT, mFrameHeight);
|
||||
}
|
||||
}
|
||||
|
||||
public void surfaceChanged(SurfaceHolder _holder, int format, int width, int height) {
|
||||
Log.i(TAG, "called surfaceChanged");
|
||||
setupCamera(width, height);
|
||||
}
|
||||
|
||||
public void surfaceCreated(SurfaceHolder holder) {
|
||||
Log.i(TAG, "called surfaceCreated");
|
||||
(new Thread(this)).start();
|
||||
}
|
||||
|
||||
public void surfaceDestroyed(SurfaceHolder holder) {
|
||||
Log.i(TAG, "called surfaceDestroyed");
|
||||
}
|
||||
protected abstract Bitmap processFrame(VideoCapture capture);
|
||||
|
||||
public void run() {
|
||||
Log.i(TAG, "Started processing thread");
|
||||
mFps.init();
|
||||
|
||||
while (true) {
|
||||
Bitmap bmp = null;
|
||||
|
||||
synchronized (this) {
|
||||
if (mCamera == null)
|
||||
break;
|
||||
|
||||
if (!mCamera.grab()) {
|
||||
Log.e(TAG, "mCamera.grab() failed");
|
||||
break;
|
||||
}
|
||||
|
||||
bmp = processFrame(mCamera);
|
||||
|
||||
mFps.measure();
|
||||
}
|
||||
|
||||
if (bmp != null) {
|
||||
Canvas canvas = mHolder.lockCanvas();
|
||||
if (canvas != null) {
|
||||
canvas.drawColor(0, android.graphics.PorterDuff.Mode.CLEAR);
|
||||
canvas.drawBitmap(bmp, (canvas.getWidth() - bmp.getWidth()) / 2, (canvas.getHeight() - bmp.getHeight()) / 2, null);
|
||||
mFps.draw(canvas, (canvas.getWidth() - bmp.getWidth()) / 2, 0);
|
||||
mHolder.unlockCanvasAndPost(canvas);
|
||||
}
|
||||
bmp.recycle();
|
||||
}
|
||||
}
|
||||
Log.i(TAG, "Finished processing thread");
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user