虹软人脸识别sdk使用-android（二）

虹软人脸识别sdk使用-android（一）在这篇文章中简单的介绍了如何接入SDK，以及如何使用虹软的一些接口，这篇主要介绍如何接入人脸识别框

如何去画人脸框，这里有两种方法，第一种是获得人脸识别后的图像的坐标，然后自己去画Rect，第二种是直接用虹软的人脸框，移植到自己的项目中

一、获得人脸坐标（未完成）

首先我们可以自行查看人脸的坐标，以及或得人脸识别追踪后的画面

人脸坐标：这里展示的显示一个人脸的坐标

/*
                * 1.6日人脸框实现
                * */
                Rect rect = faceInfoList.get(0).getRect();

                //////这些新的坐标是对的；划重点
                rect1 = adjustRect(rect, previewSize.width, previewSize.height, mAspectLayout.getWidth(), mAspectLayout.getHeight(), 90, Camera.CameraInfo.CAMERA_FACING_FRONT, false, false, false);


                /*
                 * whq1.5日修改，我现在需要将bitmap提取出来，通过NV21来提取
                 * */

                Bitmap bitmap = nv21ToBitmap(nv21, previewSize.width, previewSize.height);


                Bitmap bitmap1 = Bitmap.createBitmap(bitmap, rect.left, rect.top,rect.right - rect.left,rect.bottom - rect.top);

                ///存人脸框
                getRGBData(bitmap1);
                 Log.i(TAG, "faceInfoList: " + faceInfoList);
                Log.i(TAG, "Rect的top: " + faceInfoList.get(0).getRect().top);
                Log.i(TAG, "Rect的left: " + faceInfoList.get(0).getRect().left);
                Log.i(TAG, "Rect的bottom: " + faceInfoList.get(0).getRect().bottom);
                Log.i(TAG, "Rect的right: " + faceInfoList.get(0).getRect().right);

这里是对应的打印值，这里的rect的坐标点找到

但是不能对这四个点就行画人脸框，需要重新运算一下，获得rect：

/*
    * 1.6日虹软人脸框设计
    * */

    public Rect adjustRect(Rect ftRect,int mpreviewWidth,int mpreviewHeight, int mcanvasWidth,int mcanvasHeight,int mcameraDisplayOrientation,int mcameraId,boolean misMirror,boolean mmirrorHorizontal,boolean mmirrorVertical) {

        int previewWidth = mpreviewWidth;
        int previewHeight = mpreviewHeight;
        int canvasWidth = mcanvasWidth;
        int canvasHeight = mcanvasHeight;
        int cameraDisplayOrientation = mcameraDisplayOrientation;
        int cameraId = mcameraId;
        boolean isMirror = false;
        boolean mirrorHorizontal = false;
        boolean mirrorVertical = false;

        if (ftRect == null) {
            return null;
        }

        Rect rect = new Rect(ftRect);
        float horizontalRatio;
        float verticalRatio;
        if (cameraDisplayOrientation % 180 == 0) {
            horizontalRatio = (float) canvasWidth / (float) previewWidth;
            verticalRatio = (float) canvasHeight / (float) previewHeight;
        } else {
            horizontalRatio = (float) canvasHeight / (float) previewWidth;
            verticalRatio = (float) canvasWidth / (float) previewHeight;
        }
        rect.left *= horizontalRatio;
        rect.right *= horizontalRatio;
        rect.top *= verticalRatio;
        rect.bottom *= verticalRatio;

        Rect newRect = new Rect();
        switch (cameraDisplayOrientation) {
            case 0:
                if (cameraId == Camera.CameraInfo.CAMERA_FACING_FRONT) {
                    newRect.left = canvasWidth - rect.right;
                    newRect.right = canvasWidth - rect.left;
                } else {
                    newRect.left = rect.left;
                    newRect.right = rect.right;
                }
                newRect.top = rect.top;
                newRect.bottom = rect.bottom;
                break;
            case 90:
                newRect.right = canvasWidth - rect.top;
                newRect.left = canvasWidth - rect.bottom;
                if (cameraId == Camera.CameraInfo.CAMERA_FACING_FRONT) {
                    newRect.top = canvasHeight - rect.right;
                    newRect.bottom = canvasHeight - rect.left;
                } else {
                    newRect.top = rect.left;
                    newRect.bottom = rect.right;
                }
                break;
            case 180:
                newRect.top = canvasHeight - rect.bottom;
                newRect.bottom = canvasHeight - rect.top;
                if (cameraId == Camera.CameraInfo.CAMERA_FACING_FRONT) {
                    newRect.left = rect.left;
                    newRect.right = rect.right;
                } else {
                    newRect.left = canvasWidth - rect.right;
                    newRect.right = canvasWidth - rect.left;
                }
                break;
            case 270:
                newRect.left = rect.top;
                newRect.right = rect.bottom;
                if (cameraId == Camera.CameraInfo.CAMERA_FACING_FRONT) {
                    newRect.top = rect.left;
                    newRect.bottom = rect.right;
                } else {
                    newRect.top = canvasHeight - rect.right;
                    newRect.bottom = canvasHeight - rect.left;
                }
                break;
            default:
                break;
        }

        return newRect;
    }

进行打印

                //打印新的坐标，这些新的坐标是对的；划重点
                Log.i(TAG, "Rect1的top: " + rect1.top);
                Log.i(TAG, "Rect1的left: " + rect1.left);
                Log.i(TAG, "Rect1的bottom: " + rect1.bottom);
                Log.i(TAG, "Rect1的right: " + rect1.right);

这是打印值

 接下来对这四个点进行画rect矩形框

package com.example.camera;


import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Rect;
import android.view.View;
import android.graphics.Color;
import android.util.AttributeSet;

public class DrawViewTest extends View{

    private Paint mPaint;

    public DrawViewTest(Context context) {
        super(context);
        init();
    }


    public DrawViewTest(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public DrawViewTest(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }



    private void init(){
        mPaint = new Paint();
        mPaint.setAntiAlias(true);          //抗锯齿
        mPaint.setColor(Color.YELLOW);        //画笔颜色,红色
        mPaint.setStyle(Paint.Style.STROKE);  //画笔风格
        mPaint.setTextSize(36);             //绘制文字大小，单位px
        mPaint.setStrokeWidth(5);           //画笔粗细
    }

    //重写该方法，在这里绘图
    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        drawable(canvas);
        invalidate();
    }

    public void drawable(Canvas canvas) {



        canvas.drawColor(Color.RED);
//        // 画实心圆
//        canvas.drawCircle(200, 200, 100, mPaint);
        // 画矩形

        canvas.drawRect(107, 708, 822, 1404, mPaint);///这里的四个点就是转化后的四个点

    }

}

package com.example.camera;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.os.Bundle;
import android.util.Log;
import android.view.Window;
import android.view.WindowManager;

public class Main2Activity extends AppCompatActivity {

    private static final String TAG = "Main2Activity";

    private Paint mPaint;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);


        Intent intent = getIntent();
        int[] rects = intent.getIntArrayExtra("rect");
        Rect rect = new Rect();
        rect.set(rects[1],rects[0],rects[3],rects[2]);
        Log.i(TAG, "onCreate: "+rects[0]);
        Log.i(TAG, "onCreate: "+rects[1]);
        Log.i(TAG, "onCreate: "+rects[2]);
        Log.i(TAG, "onCreate: "+rects[3]);

        setContentView(new DrawViewTest(Main2Activity.this));
    }

    public void drawrect(Rect rect){

        int left = rect.left;
        int top = rect.top;
        int right = rect.right;
        int bootom = rect.bottom;

        mPaint = new Paint();
        mPaint.setAntiAlias(true);          //抗锯齿
        mPaint.setColor(Color.YELLOW);        //画笔颜色,红色
        mPaint.setStyle(Paint.Style.STROKE);  //画笔风格
        mPaint.setTextSize(36);             //绘制文字大小，单位px
        mPaint.setStrokeWidth(5);           //画笔粗细

        Canvas canvas = new Canvas();
        canvas.drawColor(Color.RED);

        canvas.drawRect(left, top, right, bootom, mPaint);

    }

}

使用Main2Activity对这四个点进行画矩形框发现是对的。所以必须对rect的四个点进行转化才能画框 。剩下的请读者自行实现

二、移植虹软的人脸框

1、添加文件

 添加如下这几个文件。

2、布局文件

布局文件更改为：

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity_l">

    <FrameLayout
        android:id="@+id/layout_aspect"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

    </FrameLayout>

    <com.example.camera.widget.FaceRectView
        android:id="@+id/face_rect_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />



    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_gravity="top"
        android:gravity="center">
        <TextView
            android:id="@+id/face_num"
            android:layout_width="100dp"
            android:layout_height="50dp"
            android:text="人脸数：--"
            android:textColor="#000000"
            />
        <TextView
            android:id="@+id/age"
            android:layout_width="100dp"
            android:layout_height="50dp"
            android:layout_toRightOf="@id/face_num"
            android:text="年龄：--"
            android:textColor="#000000"
            />
        <TextView
            android:id="@+id/gender"
            android:layout_width="100dp"
            android:layout_height="50dp"
            android:layout_toRightOf="@id/age"
            android:text="性别：--"
            android:textColor="#000000"
            />
        <TextView
            android:id="@+id/liveness"
            android:layout_width="100dp"
            android:layout_height="50dp"
            android:layout_toRightOf="@id/gender"
            android:text="活体：--"
            android:textColor="#000000"
            />

    </LinearLayout>


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_gravity="bottom"
        android:gravity="center">
        <Button
            android:id="@+id/btn_init"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="初始化" />

        <Button
            android:id="@+id/btn_switch"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="切换相机" />
        <Button
            android:id="@+id/btn_focus"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="focus"
            android:text="聚焦" />

        <Button
            android:id="@+id/btn_facerect"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="facerect"
            android:text="人脸框" />


    </LinearLayout>

</FrameLayout>

3、对FaceRectView就行画框

在initView()中添加：

/*
        * 1.12人脸识别框
        * */
        faceRectView = findViewById(R.id.face_rect_view);//

在init()中添加更改为：

 /*
         * 检测属性
         * */

        Camera camera = CameraUtils.getmCamera();

        /*
         * 1.12whq人脸框
         * */

        previewSize = camera.getParameters().getPreviewSize();
        drawHelper = new DrawHelper(previewSize.width, previewSize.height, mCameraSurfaceView.getWidth(), mCameraSurfaceView.getHeight(), 90
                , 1, false, false, false);





         /*
                 * 1.12人脸框
                 * */
                if (faceRectView != null && drawHelper != null && faceInfoList.size()>0 && genderInfoList.size()>0 && ageInfoList.size()>0 && livenessInfoList.size()>0) {
                    List<DrawInfo> drawInfoList = new ArrayList<>();
                    //System.out.println("参数的数量是："+ faceInfoList.size());
                    for (int i = 0; i < faceInfoList.size(); i++) {
                        drawInfoList.add(new DrawInfo(drawHelper.adjustRect(faceInfoList.get(i).getRect()), genderInfoList.get(i).getGender(), ageInfoList.get(i).getAge(), livenessInfoList.get(i).getLiveness(), RecognizeColor.COLOR_UNKNOWN, null));
                    }
                    drawHelper.draw(faceRectView, drawInfoList);
                }

添加这两处代码即可

4、查看人脸追踪后的照片

String image_test;////用于保存图片

         /*
         * 用于保存图片
         * */
        String rootDir = MainActivity_l.this.getExternalFilesDir("pic").getAbsolutePath();
        image_test = rootDir + "/test.png";        

  /*
     *whq 保存照片
     * */

    private void getRGBData(Bitmap bitmap) {
        File file = new File(image_test);
        try {
            file.createNewFile();
            FileOutputStream fos = new FileOutputStream(file);
            bitmap.compress(Bitmap.CompressFormat.PNG, 100, fos);
            fos.close();
        } catch (IOException e) {
            e.printStackTrace();
        }


    }

在安卓的文件管理中找到data，找到这个APP的包的全名，然后一点一点找到，就会发现里面存着人脸的识别后的照片。

以上就是完成了人脸检测及追踪。

完整的代码链接：https://download.csdn.net/download/hequnwang10/14150596