android_人脸识别_

package com.face;

import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.PointF;
import android.media.FaceDetector;
import android.media.FaceDetector.Face;
import android.os.Bundle;
import android.view.View;
 
public class MainActivity extends Activity {
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(new myView(this));
  }
 
  private class myView extends View{
 
    private int imageWidth, imageHeight;
    private int numberOfFace = 5;
    private FaceDetector myFaceDetect;
    private FaceDetector.Face[] myFace;
    float myEyesDistance;
    int numberOfFaceDetected;
 
    Bitmap myBitmap;
 
    public myView(Context context) {
      super(context);
      BitmapFactory.Options BitmapFactoryOptionsbfo = new BitmapFactory.Options();
      BitmapFactoryOptionsbfo.inPreferredConfig = Bitmap.Config.RGB_565;
      myBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.p1, BitmapFactoryOptionsbfo);
      imageWidth = myBitmap.getWidth();
      imageHeight = myBitmap.getHeight();
      myFace = new FaceDetector.Face[numberOfFace];
      myFaceDetect = new FaceDetector(imageWidth, imageHeight, numberOfFace);
      numberOfFaceDetected = myFaceDetect.findFaces(myBitmap, myFace);
    }
 
    protected void onDraw(Canvas canvas) {
      // TODO Auto-generated method stub
 
      canvas.drawBitmap(myBitmap, 0, 0, null);
 
      Paint myPaint = new Paint();
      myPaint.setColor(Color.GREEN);
      myPaint.setStyle(Paint.Style.STROKE);
      myPaint.setStrokeWidth(3);
 
      for(int i=0; i < numberOfFaceDetected; i )
      {
        Face face = myFace[i];
        PointF myMidPoint = new PointF();
        face.getMidPoint(myMidPoint);
        myEyesDistance = face.eyesDistance();
        canvas.drawRect(
            (int)(myMidPoint.x - myEyesDistance*2),
            (int)(myMidPoint.y - myEyesDistance*2),
            (int)(myMidPoint.x  myEyesDistance*2),
            (int)(myMidPoint.y  myEyesDistance*2),
            myPaint);
      }
    }
  }
}