百度人脸识别

百度人脸识别

1 .创建应用，拿到APPID、AK、SK

2 .下载并导入jar包

在界面添加一个Button 实现点击事件

Java代码如下

package com.example.facedemo;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;

import android.Manifest;
import android.app.Activity;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Base64;
import android.util.Log;
import android.view.View;
import android.widget.Button;

import com.baidu.aip.face.AipFace;

import org.json.JSONObject;

import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;

public class MainActivity extends AppCompatActivity {
     
    private static final int REQUEST_EXTERNAL_STORAGE = 1;
    private static final int MSG_SHOW = 1001;
    private static String[] PERMISSIONS_STORAGE = {
     
            Manifest.permission.READ_EXTERNAL_STORAGE,
            Manifest.permission.WRITE_EXTERNAL_STORAGE};

    //设置APPID/AK/SK
    public static final String APP_ID = " ";
    public static final String API_KEY = " ";
    public static final String SECRET_KEY = " ";

    private Button btn_face_detect;
    private FaveView faveView;
    private Handler handler;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
     
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        verifyStoragePermissions(this);

        handler = new Handler(new Handler.Callback() {
     
            @Override
            public boolean handleMessage(@NonNull Message msg) {
     
                if(msg.what == MSG_SHOW){
     
                    JSONObject detect = (JSONObject) msg.obj;
                    faveView.showFace(detect);
                    return true;
                }
                return false;
            }
        });

        faveView = findViewById(R.id.face_view);
        String filePath= "/sdcard/DCIM/liuhaocun.jpeg";
        Bitmap bitmap = BitmapFactory.decodeFile(filePath);
        faveView.setImageBitmap(bitmap);


        btn_face_detect = findViewById(R.id.face_detect);
        btn_face_detect.setOnClickListener(new View.OnClickListener() {
     
            @Override
            public void onClick(View v) {
     
                String imageType = "BASE64";
//                String filePath = "/sdcard/DCIM/sunli.png";
                String filePath= "/sdcard/DCIM/liuhaocun.jpeg";
//                String filePath= "/sdcard/DCIM/girls.jpg";
                String image = ImageToBase64(filePath);
                Log.e("Base64", image);

                // 传入可选参数调用接口
                HashMap<String, String> options = new HashMap<String, String>();
                options.put("face_field", "age");
                options.put("max_face_num", "10");
                options.put("face_type", "LIVE");
                options.put("liveness_control", "LOW");


                AipFace aipFace = new AipFace(APP_ID, API_KEY, SECRET_KEY);

                new Thread(new Runnable() {
     
                    @Override
                    public void run() {
     
                        JSONObject detect = aipFace.detect(image, imageType, options);
                        Log.e("FACE", detect.toString());

                        Message msg = new Message();
                        msg.what = MSG_SHOW;
                        msg.obj = detect;
                        handler.sendMessage(msg);
                    }
                }).start();
            }
        });

    }


    /**
     * 本地图片转换Base64的方法
     *
     * @param imgPath     
     */

    private static String ImageToBase64(String imgPath) {
     
        byte[] data = null;
        // 读取图片字节数组
        try {
     
            InputStream in = new FileInputStream(imgPath);
            data = new byte[in.available()];
            in.read(data);
            in.close();
        } catch (IOException e) {
     
            e.printStackTrace();
        }

        String str = Base64.encodeToString(data, Base64.NO_WRAP);
        return str;
    }

    /**
     * 检查当前Activity是否有某种权限 没有则弹出授权框
     *
     * @param activity
     */
    public static void verifyStoragePermissions(Activity activity) {
     
        // Check if we have write permission
        int permission = ActivityCompat.checkSelfPermission(activity,
                Manifest.permission.WRITE_EXTERNAL_STORAGE);
        if (permission != PackageManager.PERMISSION_GRANTED) {
     
            // We don't have permission so prompt the user
            ActivityCompat.requestPermissions(activity, PERMISSIONS_STORAGE,
                    REQUEST_EXTERNAL_STORAGE);
        }
    }
}

绘制脸

package com.example.demo;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Point;
import android.util.AttributeSet;
import android.util.Log;
import android.widget.ImageView;

import androidx.annotation.Nullable;

import com.google.gson.Gson;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.util.List;

public class FaceView extends androidx.appcompat.widget.AppCompatImageView {
     
    List<Face_list> face_list;
    Paint paint;

    public FaceView(Context context, @Nullable AttributeSet attrs) {
     
        super(context, attrs);

        paint = new Paint();
        paint.setColor(Color.RED);
        paint.setStrokeWidth(5);
        paint.setStyle(Paint.Style.STROKE);
    }

    public void showFace(JSONObject detect) throws JSONException {
     
        Gson gson = new Gson();
        FaceResult faceResult = gson.fromJson(detect.toString(), FaceResult.class);
        face_list = faceResult.getResult().getFace_list();
        // 检测到几张脸
        int face_num = faceResult.getResult().getFace_num();

        if(face_num > 0){
     
            invalidate();
        }
    }

    @Override
    protected void onDraw(Canvas canvas) {
     
        super.onDraw(canvas);

       /* if(location != null){
            float left = (float) location.getLeft();
            float top = (float) location.getTop();
            float right = left + location.getWidth();
            float bottom = top + location.getHeight();
            canvas.drawRect(left,top ,right, bottom,paint);
        }*/

        if(face_list == null){
     
            return;
        }

        for (int i = 0; i < face_list.size(); i++) {
     
                Location location = face_list.get(i).getLocation();
                if (location != null) {
     
                    Point p1 = new Point((int) location.getLeft(), (int) location.getTop());

                    int x2 = (int) (p1.x + location.getWidth() * Math.cos(Math.PI * location.getRotation() / 180));
                    int y2 = (int) (p1.y + location.getWidth() * Math.sin(Math.PI * location.getRotation() / 180));
                    Point p2 = new Point(x2, y2);

                    canvas.drawLine(p1.x, p1.y, p2.x, p2.y, paint);

                    int x3 = (int) (x2 - location.getHeight() * Math.sin(Math.PI * location.getRotation() / 180));
                    int y3 = (int) (y2 + location.getHeight() * Math.cos(Math.PI * location.getRotation() / 180));

                    Point p3 = new Point(x3, y3);

                    canvas.drawLine(p2.x, p2.y, p3.x, p3.y, paint);

                    int x4 = (int) (location.getLeft() - location.getHeight() * Math.sin(Math.PI * location.getRotation() / 180));
                    int y4 = (int) (location.getTop() + location.getHeight() * Math.cos(Math.PI * location.getRotation() / 180));
                    Point p4 = new Point(x4, y4);


                    canvas.drawLine(p3.x, p3.y, p4.x, p4.y, paint);
                    canvas.drawLine(p1.x, p1.y, p4.x, p4.y, paint);
                }
            }

    }
}

获取图片的Base64编码 抽取为一个方法

 /**
     * 获取图片的Base64编码字符串
     *
     * @param filePath
     * @return
     */
    private String getImage64Str(String filePath) {
     
        FileInputStream fileInputStream = null;
        try {
     
            fileInputStream = new FileInputStream(filePath);
            byte[] bytes = new byte[fileInputStream.available()];
            fileInputStream.read(bytes);
            fileInputStream.close();
            return Base64.encodeToString(bytes, Base64.NO_WRAP);
        } catch (FileNotFoundException e) {
     
            e.printStackTrace();
        } catch (IOException e) {
     
            e.printStackTrace();
        }

        return null;
    }

人脸对比的代码

/**
     *  人脸比对
     */
    private void faceMatch(String filePath, String filePath2) {
     
        AipFace client = new AipFace(APP_ID, API_KEY, SECRET_KEY);
        String imgStr1 = getImage64Str(filePath);
        String imgStr2 = getImage64Str(filePath2);

        Log.e("FaceMatch", "imgStr1 = " + imgStr1);
        Log.e("FaceMatch", "imgStr2 = " + imgStr2);

        MatchRequest req1 = new MatchRequest(imgStr1, "BASE64");
        MatchRequest req2 = new MatchRequest(imgStr2, "BASE64");

        ArrayList<MatchRequest> matchRequestArrayList = new ArrayList<>();
        matchRequestArrayList.add(req1);
        matchRequestArrayList.add(req2);

        JSONObject match = client.match(matchRequestArrayList);


        Log.e("Match", match.toString());
    }