android 人脸识别
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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;//图片宽度与高度
private int numberOfFace = 5;//图片数量
private FaceDetector myFaceDetect;//人脸检测
private FaceDetector.Face[] myFace;//人脸对象
float myEyesDistance;//双眼的距离
int numberOfFaceDetected;//face检测器数量
Bitmap myBitmap;
public myView(Context context) {
super(context);
BitmapFactory.Options BitmapFactoryOptionsbfo = new BitmapFactory.Options();
BitmapFactoryOptionsbfo.inPreferredConfig = Bitmap.Config.RGB_565;
//BitmapFactory.Options.inPreferredConfig
myBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.p1, BitmapFactoryOptionsbfo);
//BitmapFactory.decodeResource(res, id, opts);
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);//画笔
myPaint.setStrokeWidth(3);
for(int i=0; i < numberOfFaceDetected; i++)
{
Face face = myFace[i];
PointF myMidPoint = new PointF();
face.getMidPoint(myMidPoint);//(X,Y)
myEyesDistance = face.eyesDistance();//return float
// float confidence() ;可信度(0-1)
// float eyesDistance(); 双眼的距离
// void getMidPoint(PointF point);设置双眼的中点
// float pose(int euler); 眼睛的pose,传入的为欧拉轴检索的角度。
canvas.drawRect(//位置为顺时针,由左开始
(int)(myMidPoint.x - myEyesDistance*2),
(int)(myMidPoint.y - myEyesDistance*2),
(int)(myMidPoint.x + myEyesDistance*2),
(int)(myMidPoint.y + myEyesDistance*2),
myPaint);
}
}
}
}
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;//图片宽度与高度
private int numberOfFace = 5;//图片数量
private FaceDetector myFaceDetect;//人脸检测
private FaceDetector.Face[] myFace;//人脸对象
float myEyesDistance;//双眼的距离
int numberOfFaceDetected;//face检测器数量
Bitmap myBitmap;
public myView(Context context) {
super(context);
BitmapFactory.Options BitmapFactoryOptionsbfo = new BitmapFactory.Options();
BitmapFactoryOptionsbfo.inPreferredConfig = Bitmap.Config.RGB_565;
//BitmapFactory.Options.inPreferredConfig
myBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.p1, BitmapFactoryOptionsbfo);
//BitmapFactory.decodeResource(res, id, opts);
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);//画笔
myPaint.setStrokeWidth(3);
for(int i=0; i < numberOfFaceDetected; i++)
{
Face face = myFace[i];
PointF myMidPoint = new PointF();
face.getMidPoint(myMidPoint);//(X,Y)
myEyesDistance = face.eyesDistance();//return float
// float confidence() ;可信度(0-1)
// float eyesDistance(); 双眼的距离
// void getMidPoint(PointF point);设置双眼的中点
// float pose(int euler); 眼睛的pose,传入的为欧拉轴检索的角度。
canvas.drawRect(//位置为顺时针,由左开始
(int)(myMidPoint.x - myEyesDistance*2),
(int)(myMidPoint.y - myEyesDistance*2),
(int)(myMidPoint.x + myEyesDistance*2),
(int)(myMidPoint.y + myEyesDistance*2),
myPaint);
}
}
}
}
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