Android+Camera+SurfaceView自定义相机系列在这篇文章中已经介绍了如何使用camera+surfaceview
在此基础上我们介绍如何接入虹软的人脸识别功能。首先自己去注册虹软的开发者账号,并自行下载SDK,SDK的APP_ID和SDK_KEY是唯一的,可以激活一台设备,完成认证后,可以用于激活100台设备。
一、SDK接入配置
1、在官方文档中可以看到主要将几个jar包和几个so文件接入到你的项目目录下。完成这步就算完成了接入SDK。
2、激活引擎
我们在自定义的camera的项目中,将激活与初始化封装起来,重新写init()函数
private void init() {
/*
* 激活
* */
String APP_ID = "换成自己的ID";
String SDK_KEY = "换成自己的key";
int code = FaceEngine.activeOnline(MainActivity_l.this, APP_ID, SDK_KEY);
if (code == ErrorInfo.MOK) {
Log.i(TAG, "activeOnline success");
Toast.makeText(MainActivity_l.this, "激活成功", Toast.LENGTH_SHORT).show();
} else if (code == ErrorInfo.MERR_ASF_ALREADY_ACTIVATED) {
Log.i(TAG, "already activated");
Toast.makeText(MainActivity_l.this, "已经激活", Toast.LENGTH_SHORT).show();
} else {
Log.i(TAG, "activeOnline failed, code is : " + code);
}
/*
* 初始化
* */
faceEngine = new FaceEngine();
// int code_init = faceEngine.init(getApplicationContext(),DetectMode.ASF_DETECT_MODE_VIDEO, DetectFaceOrientPriority.ASF_OP_0_ONLY, scale,maxFaceNum, initMask);
int code_init = faceEngine.init(getApplicationContext(), DetectMode.ASF_DETECT_MODE_VIDEO, DetectFaceOrientPriority.ASF_OP_ALL_OUT, scale, maxFaceNum, initMask);
if (code_init != ErrorInfo.MOK) {
Toast.makeText(this, "init failed, code is : " + code,
Toast.LENGTH_SHORT).show();
} else {
Log.i(TAG, "init success");
Toast.makeText(MainActivity_l.this, "初始化成功", Toast.LENGTH_SHORT).show();
}
}
View Code
这样我们就完成了如何激活与初始化
3、属性检测
我们使用虹软SDK主要是使用他进行人脸追踪和人脸识别等功能,比如画人脸框,显示性别,年龄,人脸数,是否活体等功能,所以我们继续在init()添加功能
/*
* 检测属性
* */
Camera camera = CameraUtils.getmCamera();
camera.setDisplayOrientation(90);
DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
final Camera.Parameters parameters = camera.getParameters();
parameters.setPreviewFormat(ImageFormat.NV21);
camera.setParameters(parameters);
camera.setPreviewCallback(new Camera.PreviewCallback() {
@Override
public void onPreviewFrame(byte[] nv21, Camera camera) {
// 这里面的Bytes的数据就是NV21格式的数据
previewSize = camera.getParameters().getPreviewSize();
/*
* 显示人脸个数
* */
faceInfoList = new ArrayList<>();
// long start = System.currentTimeMillis();
int code = faceEngine.detectFaces(nv21, previewSize.width, previewSize.height,
FaceEngine.CP_PAF_NV21, faceInfoList);
if (code == ErrorInfo.MOK && faceInfoList.size() > 0) {
Log.i(TAG, "detectFaces, face num is : " + faceInfoList.size());
// Toast.makeText(MainActivity.this,"检测成功",Toast.LENGTH_SHORT).show();
} else {
Log.i(TAG, "no face detected, code is : " + code);
// Toast.makeText(MainActivity.this,"检测失败",Toast.LENGTH_SHORT).show();
}
face_num.setText("人脸数:" + faceInfoList.size());
/*
* 显示年龄
* */
processMask = FaceEngine.ASF_AGE | FaceEngine.ASF_GENDER | FaceEngine.ASF_FACE3DANGLE | FaceEngine.ASF_LIVENESS;
int faceProcessCode = faceEngine.process(nv21, previewSize.width, previewSize.height,
FaceEngine.CP_PAF_NV21, faceInfoList, processMask);
if (faceProcessCode == ErrorInfo.MOK) {
Log.i(TAG, "process success");
// Toast.makeText(MainActivity.this,"属性成功",Toast.LENGTH_SHORT).show();
} else {
Log.i(TAG, "process failed, code is : " + faceProcessCode);
// Toast.makeText(MainActivity.this,"属性失败",Toast.LENGTH_SHORT).show();
}
List<AgeInfo> ageInfoList = new ArrayList<>();
int ageCode = faceEngine.getAge(ageInfoList);
// 获取第一个人脸的年龄信息,多人脸情况进行循环即可
if (ageCode == ErrorInfo.MOK && ageInfoList.size() > 0) {
if (ageInfoList.size() > 0) {
Log.i(TAG, "age of the first face is : " + ageInfoList.get(0).getAge());
// age.setText("年龄:"+ageInfoList.get(0).getAge());
} else {
Log.i(TAG, "no face processed");
// age.setText("年龄:--");
}
} else {
Log.i(TAG, "get age failed, code is : " + ageCode);
}
if (ageInfoList.size() == 1) {
age.setText("年龄:" + ageInfoList.get(0).getAge());
}
if (ageInfoList.size() == 2){
age.setText("年龄:"+ageInfoList.get(0).getAge()+" ,"+ageInfoList.get(1).getAge());
}
if (ageInfoList.size() == 0) {
age.setText("年龄:--");
}
/*
* 显示性别
* */
List<GenderInfo> genderInfoList = new ArrayList<>();
int genderCode = faceEngine.getGender(genderInfoList);
// 获取第一个人脸的性别信息,多人脸情况进行循环即可
if (genderCode == ErrorInfo.MOK) {
if (genderInfoList.size() > 0) {
Log.i(TAG, "gender of the first face is : " +
genderInfoList.get(0).getGender());
} else {
Log.i(TAG, "no face processed");
}
} else {
Log.i(TAG, "get gender failed, code is : " + genderCode);
}
if (genderInfoList.size() > 0 && genderInfoList.get(0).getGender() == 0) {
gender.setText("年龄:M");
}
if (genderInfoList.size() > 0 && genderInfoList.get(0).getGender() == 1) {
gender.setText("年龄:F");
}
if (genderInfoList.size() == 2 ){
gender.setText("年龄:"+gen(genderInfoList.get(0).getGender())+gen(genderInfoList.get(1).getGender()));
}
if (genderInfoList.size() == 0) {
gender.setText("年龄:--");
}
/*
* 活体
* */
List<LivenessInfo> livenessInfoList = new ArrayList<>();
int livenessCode = faceEngine.getLiveness(livenessInfoList);
// RGB活体不支持多人脸,因此只能拿第1个活体信息
if (livenessCode == ErrorInfo.MOK) {
if (livenessInfoList.size() > 0) {
Log.i(TAG, "liveness of the first face is : " +
livenessInfoList.get(0).getLiveness());
} else {
Log.i(TAG, "no face processed");
}
} else {
Log.i(TAG, "get liveness failed, code is : " + livenessCode);
}
if (livenessInfoList.size() > 0 && livenessInfoList.get(0).getLiveness() == 1) {
liveness.setText("活体:Y");
} else {
liveness.setText("活体:--");
}
if (livenessInfoList.size() == 2 ){
liveness.setText("活体:"+Live(livenessInfoList.get(0).getLiveness())+Live(livenessInfoList.get(1).getLiveness()));
}
View Code
所以写完这些就完成了检测人脸数,年龄等。在这里我们先是使用textView的方式将这些信息显示在屏幕上。后面我们在移植虹软的人脸识别框,就可以去掉这些代码;
4、布局文件
<?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>
View Code
我们在点击初始化的按钮的时候调用init()函数。就可以了
这些就是我们需要的虹软的人脸识别SDK的基础功能。