人脸识别以及SoundPool 学习笔记-优快云博客

本文介绍了使用Android平台实现人脸检测的功能，并通过加载并播放预设声音文件来响应检测到的人脸，结合了图像处理与音频播放技术。

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代码片段

package com.tang.faceindetify;

import android.app.Activity;
import android.app.ActionBar;
import android.app.Fragment;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Point;
import android.graphics.PointF;
import android.media.AudioManager;
import android.media.FaceDetector;
import android.media.FaceDetector.Face;
import android.media.SoundPool;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;
import android.os.Build;

public class MainActivity extends Activity {
	private SoundPool sp;
	private int sid;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		Bitmap bitmap = BitmapFactory.decodeFile("/data/data/com.look.pic/test.jpg");
		FaceDetector detector = new FaceDetector(bitmap.getWidth(),
				bitmap.getHeight(), 1);
		Face[] mfaces = new Face[1];
		int nums = detector.findFaces(bitmap, mfaces);
		if (nums > 0) {
			for (int i = 0; i < nums; i++) {
				PointF point = new PointF();
				mfaces[i].getMidPoint(point);
				System.out.println("人脸中心坐标:"+point.x+","+point.y);
			}
		} else {
			Toast.makeText(this, "没有识别到人脸", Toast.LENGTH_SHORT).show();
		}
		sp = new SoundPool(5, AudioManager.STREAM_MUSIC, 0);
		sid = sp.load(this, R.raw.test, 0);
	}
	
	public void soundPoll(View view)
	{
		sp.play(sid, 1.5f, 1.5f, 0, 0, 1.0f);
	}
}

转载于:https://my.oschina.net/u/729139/blog/477222