├── .gitignore ├── .idea ├── .gitignore ├── .name ├── compiler.xml ├── gradle.xml ├── misc.xml └── vcs.xml ├── LICENSE ├── README.md ├── README_CH.md ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro ├── release │ ├── hyperlpr3-demo.apk │ └── output-metadata.json └── src │ ├── androidTest │ └── java │ │ └── com │ │ └── hyperai │ │ └── hyperlpr_sdk_demo │ │ └── ExampleInstrumentedTest.java │ ├── main │ ├── AndroidManifest.xml │ ├── java │ │ └── com │ │ │ └── hyperai │ │ │ └── hyperlpr_sdk_demo │ │ │ ├── CameraActivity.java │ │ │ ├── CameraPreviews.java │ │ │ └── MainActivity.java │ └── res │ │ ├── drawable-v24 │ │ └── ic_launcher_foreground.xml │ │ ├── drawable │ │ └── ic_launcher_background.xml │ │ ├── layout │ │ ├── activity_camera.xml │ │ └── activity_main.xml │ │ ├── mipmap-anydpi-v26 │ │ ├── ic_launcher.xml │ │ └── ic_launcher_round.xml │ │ ├── mipmap-hdpi │ │ ├── ic_launcher.webp │ │ └── ic_launcher_round.webp │ │ ├── mipmap-mdpi │ │ ├── ic_launcher.webp │ │ └── ic_launcher_round.webp │ │ ├── mipmap-xhdpi │ │ ├── ic_launcher.webp │ │ └── ic_launcher_round.webp │ │ ├── mipmap-xxhdpi │ │ ├── ic_launcher.webp │ │ ├── ic_launcher_round.webp │ │ └── logo.png │ │ ├── mipmap-xxxhdpi │ │ ├── ic_launcher.webp │ │ └── ic_launcher_round.webp │ │ ├── values-night │ │ └── themes.xml │ │ └── values │ │ ├── colors.xml │ │ ├── strings.xml │ │ └── themes.xml │ └── test │ └── java │ └── com │ └── hyperai │ └── hyperlpr_sdk_demo │ └── ExampleUnitTest.java ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── hyperlpr3 ├── .gitignore ├── build.gradle ├── consumer-rules.pro ├── libs │ ├── arm64-v8a │ │ └── libhyperlpr3.so │ └── armeabi-v7a │ │ └── libhyperlpr3.so ├── proguard-rules.pro └── src │ ├── androidTest │ └── java │ │ └── com │ │ └── hyperai │ │ └── hyperlpr3 │ │ └── ExampleInstrumentedTest.java │ ├── main │ ├── AndroidManifest.xml │ ├── assets │ │ └── r2_mobile │ │ │ ├── b320_backbone_h.mnn │ │ │ ├── b320_header_h.mnn │ │ │ ├── b640x_backbone_h.mnn │ │ │ ├── b640x_head_h.mnn │ │ │ ├── litemodel_cls_96xh.mnn │ │ │ └── rpv3_mdict_160h.mnn │ └── java │ │ └── com │ │ └── hyperai │ │ └── hyperlpr3 │ │ ├── HyperLPR3.java │ │ ├── api │ │ └── APIDefine.java │ │ ├── bean │ │ ├── HyperLPRParameter.java │ │ └── Plate.java │ │ ├── core │ │ └── HyperLPRCore.java │ │ ├── settings │ │ ├── SDKConfig.java │ │ └── TypeDefine.java │ │ └── utils │ │ └── SDKUtils.java │ └── test │ └── java │ └── com │ └── hyperai │ └── hyperlpr3 │ └── ExampleUnitTest.java └── settings.gradle /.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | /local.properties 4 | /.idea/caches 5 | /.idea/libraries 6 | /.idea/modules.xml 7 | /.idea/workspace.xml 8 | /.idea/navEditor.xml 9 | /.idea/assetWizardSettings.xml 10 | .DS_Store 11 | /build 12 | /captures 13 | .externalNativeBuild 14 | .cxx 15 | local.properties 16 | -------------------------------------------------------------------------------- /.idea/.gitignore: -------------------------------------------------------------------------------- 1 | # Default ignored files 2 | /shelf/ 3 | /workspace.xml 4 | -------------------------------------------------------------------------------- /.idea/.name: -------------------------------------------------------------------------------- 1 | HyperLPR_SDK_Demo -------------------------------------------------------------------------------- /.idea/compiler.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /.idea/gradle.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 20 | 21 | -------------------------------------------------------------------------------- /.idea/misc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 9 | -------------------------------------------------------------------------------- /.idea/vcs.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright {yyyy} {name of copyright owner} 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | ## HyperLPR3-License Plate Recognition Android SDK 2 | 3 | [中文文档](README_CH.md) 4 | 5 | High performance license plate recognition based on deep learning HyperLPR Android SDK implementation. 6 | 7 | ### Source Code Project 8 | 9 | If you need to learn about the build steps in the source code of the project, you can go : [HyperLPR](https://github.com/szad670401/HyperLPR). 10 | 11 | ### Supporting Platform 12 | 13 | - Android: arm64-v8a、armeabi-v7a 14 | 15 | ### Add Dependency 16 | 17 | Add Jitpack dependencies to your Gradle configuration 18 | 19 | ```java 20 | allprojects { 21 | repositories { 22 | ... 23 | maven { url 'https://jitpack.io' } 24 | } 25 | } 26 | ``` 27 | 28 | Add dependencies in build.gradle for projects where you need hyperlpr 29 | 30 | ```java 31 | dependencies { 32 | implementation 'com.github.HyperInspire:hyperlpr3-android-sdk:1.0.3' 33 | } 34 | ``` 35 | 36 | ### How to Use 37 | 38 | #### Initialize HyperLPR 39 | 40 | Before implementing the license plate recognition algorithm, the initialization function needs to be executed, and the storage read and write permissions need to be opened in advance. Initialization is performed only once, usually when the program is started. 41 | 42 | ```Java 43 | // License plate recognition algorithm configuration parameters 44 | HyperLPRParameter parameter = new HyperLPRParameter() 45 | .setDetLevel(HyperLPR3.DETECT_LEVEL_LOW) 46 | .setMaxNum(1) 47 | .setRecConfidenceThreshold(0.85f); 48 | // Initialization (performed only once) 49 | HyperLPR3.getInstance().init(this, parameter); 50 | ``` 51 | 52 | #### License plate recognition on an image 53 | 54 | Bitmap is used as an example for license plate recognition 55 | 56 | ```Java 57 | // Use Bitmap as picture parameter for license plate recognition 58 | Plate[] plates = HyperLPR3.getInstance().plateRecognition(bitmap, HyperLPR3.CAMERA_ROTATION_0, HyperLPR3.STREAM_BGRA); 59 | for (Plate plate: plates) { 60 | // Print the detected license plate number 61 | Log.i(TAG, plate.getCode()); 62 | } 63 | 64 | ``` 65 | #### License plate recognition on an steam 66 | 67 | License plate recognition using camera stream or file stream 68 | 69 | ```Java 70 | // License plate recognition using a stream of NV21 71 | Plate[] plates = HyperLPR3.getInstance().plateRecognition(data, previewSize.height, previewSize.width, HyperLPR3.CAMERA_ROTATION_270, HyperLPR3.STREAM_YUV_NV21); 72 | ``` 73 | 74 | #### Note 75 | 76 | The Android-SDK of hyperlpr is currently in the testing phase. If you encounter any problems during use, please raise your questions in issues. PR welcome. -------------------------------------------------------------------------------- /README_CH.md: -------------------------------------------------------------------------------- 1 | ## HyperLPR3-Android-SDK HyperLPR3-车牌识别安卓SDK 2 | 3 | 基于深度学习高性能车牌识别HyperLPR的安卓SDK实现 4 | 5 | ### 源码工程 6 | 7 | 需要了解编译相关源码可移步到[HyperLPR工程](https://github.com/szad670401/HyperLPR)。 8 | 9 | ### 支持平台 10 | 11 | - Android: arm64-v8a、armeabi-v7a 12 | 13 | ### 添加依赖 14 | 15 | 在你的Gradle配置中添加Jitpack依赖 16 | 17 | ```java 18 | allprojects { 19 | repositories { 20 | ... 21 | maven { url 'https://jitpack.io' } 22 | } 23 | } 24 | ``` 25 | 26 | 在你需要使用hyperlpr的项目中的build.gradle添加依赖 27 | 28 | ```java 29 | dependencies { 30 | implementation 'com.github.HyperInspire:hyperlpr3-android-sdk:1.0.3' 31 | } 32 | ``` 33 | 34 | ### 如何使用 35 | 36 | 37 | #### 初始化HyperLPR 38 | 39 | 在执行车牌识别算法之前需要先执行初始化函数，需要提前开启存储读写权限；初始化仅需执行一次，通常在程序启动的时候执行。 40 | 41 | ```Java 42 | // 车牌识别算法配置参数 43 | HyperLPRParameter parameter = new HyperLPRParameter() 44 | .setDetLevel(HyperLPR3.DETECT_LEVEL_LOW) 45 | .setMaxNum(1) 46 | .setRecConfidenceThreshold(0.85f); 47 | // 初始化(仅执行一次生效) 48 | HyperLPR3.getInstance().init(this, parameter); 49 | ``` 50 | 51 | #### 对一张图片进行车牌识别 52 | 53 | 采用Bitmap作为示例进行车牌识别 54 | 55 | ```Java 56 | // 使用Bitmap作为图片参数进行车牌识别 57 | Plate[] plates = HyperLPR3.getInstance().plateRecognition(bitmap, HyperLPR3.CAMERA_ROTATION_0, HyperLPR3.STREAM_BGRA); 58 | for (Plate plate: plates) { 59 | // 打印检测到的车牌号 60 | Log.i(TAG, plate.getCode()); 61 | } 62 | 63 | ``` 64 | #### 对流进行识别 65 | 66 | 通常可以传入相机流或文件流进行车牌识别 67 | 68 | ```Java 69 | // 使用一段NV21的流进行车牌识别 70 | Plate[] plates = HyperLPR3.getInstance().plateRecognition(data, previewSize.height, previewSize.width, HyperLPR3.CAMERA_ROTATION_270, HyperLPR3.STREAM_YUV_NV21); 71 | ``` 72 | 73 | #### 注意 74 | 75 | hyperlpr的Android-SDK当前属于测试阶段，如果您在使用过程中遇到任何问题请在issues中提出你的问题，也很欢迎大家多提PR。 -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | plugins { 2 | id 'com.android.application' 3 | } 4 | 5 | android { 6 | compileSdk 28 7 | 8 | defaultConfig { 9 | applicationId "com.hyperai.hyperlpr_sdk_demo" 10 | minSdk 21 11 | targetSdk 28 12 | versionCode 1 13 | versionName "1.0" 14 | 15 | testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" 16 | } 17 | 18 | buildTypes { 19 | release { 20 | minifyEnabled false 21 | proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' 22 | } 23 | } 24 | compileOptions { 25 | sourceCompatibility JavaVersion.VERSION_1_8 26 | targetCompatibility JavaVersion.VERSION_1_8 27 | } 28 | } 29 | 30 | dependencies { 31 | 32 | implementation 'org.greenrobot:eventbus:3.0.0' 33 | implementation 'com.android.support:appcompat-v7:28.0.0' 34 | implementation 'com.android.support.constraint:constraint-layout:2.0.4' 35 | 36 | implementation 'androidx.appcompat:appcompat:1.2.0' 37 | implementation 'com.google.android.material:material:1.3.0' 38 | implementation 'androidx.constraintlayout:constraintlayout:2.0.4' 39 | implementation project(path: ':hyperlpr3') 40 | testImplementation 'junit:junit:4.+' 41 | androidTestImplementation 'androidx.test.ext:junit:1.1.2' 42 | androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0' 43 | implementation 'com.github.smuyyh:ImageSelector:3.0' 44 | implementation 'com.github.bumptech.glide:glide:3.7.0' 45 | } -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # You can control the set of applied configuration files using the 3 | # proguardFiles setting in build.gradle. 4 | # 5 | # For more details, see 6 | # http://developer.android.com/guide/developing/tools/proguard.html 7 | 8 | # If your project uses WebView with JS, uncomment the following 9 | # and specify the fully qualified class name to the JavaScript interface 10 | # class: 11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 12 | # public *; 13 | #} 14 | 15 | # Uncomment this to preserve the line number information for 16 | # debugging stack traces. 17 | #-keepattributes SourceFile,LineNumberTable 18 | 19 | # If you keep the line number information, uncomment this to 20 | # hide the original source file name. 21 | #-renamesourcefileattribute SourceFile -------------------------------------------------------------------------------- /app/release/hyperlpr3-demo.apk: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/HyperInspire/hyperlpr3-android-sdk/7e084ddefbfbeab12d7591123fc57b05ac45d89c/app/release/hyperlpr3-demo.apk -------------------------------------------------------------------------------- /app/release/output-metadata.json: -------------------------------------------------------------------------------- 1 | { 2 | "version": 3, 3 | "artifactType": { 4 | "type": "APK", 5 | "kind": "Directory" 6 | }, 7 | "applicationId": "com.hyperai.hyperlpr_sdk_demo", 8 | "variantName": "release", 9 | "elements": [ 10 | { 11 | "type": "SINGLE", 12 | "filters": [], 13 | "attributes": [], 14 | "versionCode": 1, 15 | "versionName": "1.0", 16 | "outputFile": "app-release.apk" 17 | } 18 | ], 19 | "elementType": "File" 20 | } -------------------------------------------------------------------------------- /app/src/androidTest/java/com/hyperai/hyperlpr_sdk_demo/ExampleInstrumentedTest.java: -------------------------------------------------------------------------------- 1 | package com.hyperai.hyperlpr_sdk_demo; 2 | 3 | import android.content.Context; 4 | 5 | import androidx.test.platform.app.InstrumentationRegistry; 6 | import androidx.test.ext.junit.runners.AndroidJUnit4; 7 | 8 | import org.junit.Test; 9 | import org.junit.runner.RunWith; 10 | 11 | import static org.junit.Assert.*; 12 | 13 | /** 14 | * Instrumented test, which will execute on an Android device. 15 | * 16 | * @see Testing documentation 17 | */ 18 | @RunWith(AndroidJUnit4.class) 19 | public class ExampleInstrumentedTest { 20 | @Test 21 | public void useAppContext() { 22 | // Context of the app under test. 23 | Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext(); 24 | assertEquals("com.hyperai.hyperlpr_sdk_demo", appContext.getPackageName()); 25 | } 26 | } -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 6 | 7 | 8 | 9 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 42 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | -------------------------------------------------------------------------------- /app/src/main/java/com/hyperai/hyperlpr_sdk_demo/CameraActivity.java: -------------------------------------------------------------------------------- 1 | package com.hyperai.hyperlpr_sdk_demo; 2 | 3 | import android.annotation.SuppressLint; 4 | import android.app.Activity; 5 | import android.os.Bundle; 6 | import android.view.View; 7 | import android.view.Window; 8 | import android.view.WindowManager; 9 | import android.widget.ArrayAdapter; 10 | import android.widget.FrameLayout; 11 | import android.widget.ImageView; 12 | import android.widget.ListView; 13 | import android.widget.TextView; 14 | 15 | 16 | import com.hyperai.hyperlpr3.HyperLPR3; 17 | import com.hyperai.hyperlpr3.bean.Plate; 18 | 19 | import org.greenrobot.eventbus.EventBus; 20 | import org.greenrobot.eventbus.Subscribe; 21 | import org.greenrobot.eventbus.ThreadMode; 22 | 23 | import java.util.ArrayList; 24 | import java.util.List; 25 | 26 | 27 | /** 28 | * @author by hs-johnny 29 | * Created on 2019/6/17 30 | */ 31 | public class CameraActivity extends Activity { 32 | 33 | FrameLayout previewFl; 34 | CameraPreviews cameraPreview; 35 | TextView plateTv; 36 | // TextView regTv; 37 | ImageView image; 38 | 39 | @Override 40 | protected void onCreate(Bundle savedInstanceState) { 41 | super.onCreate(savedInstanceState); 42 | requestWindowFeature(Window.FEATURE_NO_TITLE); 43 | getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 44 | WindowManager.LayoutParams.FLAG_FULLSCREEN); 45 | setContentView(R.layout.activity_camera); 46 | } 47 | 48 | private void initCamera() { 49 | previewFl = findViewById(R.id.preview_fl); 50 | plateTv = findViewById(R.id.plate_tv); 51 | image = findViewById(R.id.image); 52 | cameraPreview = new CameraPreviews(this); 53 | previewFl.addView(cameraPreview); 54 | } 55 | 56 | @Override 57 | protected void onResume() { 58 | super.onResume(); 59 | if (cameraPreview == null) { 60 | initCamera(); 61 | } 62 | } 63 | 64 | @Override 65 | protected void onPause() { 66 | super.onPause(); 67 | cameraPreview = null; 68 | } 69 | 70 | private void stopPreview() { 71 | previewFl.removeAllViews(); 72 | } 73 | 74 | @Override 75 | protected void onStart() { 76 | super.onStart(); 77 | EventBus.getDefault().register(this); 78 | } 79 | 80 | @Override 81 | protected void onStop() { 82 | super.onStop(); 83 | EventBus.getDefault().unregister(this); 84 | } 85 | 86 | @SuppressLint("SetTextI18n") 87 | @Subscribe(threadMode = ThreadMode.MAIN) 88 | public void onMessageEvent(Plate[] plates) { 89 | 90 | String showText = ""; 91 | for (Plate plate: plates) { 92 | String type = "未知车牌"; 93 | if (plate.getType() != HyperLPR3.PLATE_TYPE_UNKNOWN) { 94 | type = HyperLPR3.PLATE_TYPE_MAPS[plate.getType()]; 95 | } 96 | String pStr = "[" + type + "]" + plate.getCode() + "\n"; 97 | showText += pStr; 98 | plateTv.setText(showText); 99 | 100 | } 101 | 102 | // stopPreview(); 103 | } 104 | } 105 | -------------------------------------------------------------------------------- /app/src/main/java/com/hyperai/hyperlpr_sdk_demo/CameraPreviews.java: -------------------------------------------------------------------------------- 1 | package com.hyperai.hyperlpr_sdk_demo; 2 | 3 | import android.content.Context; 4 | import android.graphics.Paint; 5 | import android.hardware.Camera; 6 | import android.os.Handler; 7 | import android.os.HandlerThread; 8 | //import android.support.v4.content.ContextCompat; 9 | import android.util.Log; 10 | import android.view.Display; 11 | import android.view.MotionEvent; 12 | import android.view.Surface; 13 | import android.view.SurfaceHolder; 14 | import android.view.SurfaceView; 15 | import android.view.WindowManager; 16 | 17 | 18 | import org.greenrobot.eventbus.EventBus; 19 | 20 | import java.io.IOException; 21 | import java.util.List; 22 | 23 | import com.hyperai.hyperlpr3.HyperLPR3; 24 | import com.hyperai.hyperlpr3.bean.HyperLPRParameter; 25 | import com.hyperai.hyperlpr3.bean.Plate; 26 | 27 | /** 28 | * @author by hs-johnny 29 | * Created on 2019/6/17 30 | */ 31 | public class CameraPreviews extends SurfaceView implements SurfaceHolder.Callback, Camera.PreviewCallback { 32 | 33 | private static final String TAG = "CameraPreview"; 34 | private Camera mCamera; 35 | private SurfaceHolder mHolder; 36 | public long handle; 37 | private byte[] lock = new byte[0]; 38 | private Paint mPaint; 39 | private float oldDist = 1f; 40 | /** 停止识别*/ 41 | private boolean isStopReg; 42 | 43 | private Context mContext; 44 | 45 | public CameraPreviews(Context context) { 46 | super(context); 47 | mContext = context; 48 | mHolder = getHolder(); 49 | mHolder.addCallback(this); 50 | mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 51 | mPaint.setStrokeWidth(2); 52 | mPaint.setStyle(Paint.Style.STROKE); 53 | // mPaint.setColor(ContextCompat.getColor(context, R.color.colorAccent)); 54 | 55 | HyperLPRParameter parameter = new HyperLPRParameter(); 56 | // hyperLPR3 = new HyperLPR3(); 57 | // hyperLPR3.init(mContext, parameter); 58 | } 59 | public Camera getCameraInstance(){ 60 | if (mCamera == null){ 61 | try { 62 | CameraHandlerThread mThread = new CameraHandlerThread("camera thread"); 63 | synchronized (mThread){ 64 | mThread.openCamera(); 65 | } 66 | }catch (Exception e){ 67 | Log.e(TAG, "camera is not available" ); 68 | } 69 | } 70 | return mCamera; 71 | } 72 | 73 | @Override 74 | public void surfaceCreated(SurfaceHolder holder) { 75 | mCamera = getCameraInstance(); 76 | mCamera.setPreviewCallback(this); 77 | try { 78 | mCamera.setPreviewDisplay(mHolder); 79 | mCamera.startPreview(); 80 | setPreviewFocus(mCamera); 81 | } catch (IOException e) { 82 | e.printStackTrace(); 83 | } 84 | } 85 | 86 | @Override 87 | public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { 88 | int rotation = getDisplayOrientation(); 89 | mCamera.setDisplayOrientation(rotation); 90 | Camera.Parameters parameters = mCamera.getParameters(); 91 | parameters.setRotation(rotation); 92 | // parameters.setPreviewFormat(ImageFormat.NV21); 93 | mCamera.setParameters(parameters); 94 | } 95 | 96 | @Override 97 | public void surfaceDestroyed(SurfaceHolder holder) { 98 | mHolder.removeCallback(this); 99 | mCamera.setPreviewCallback(null); 100 | mCamera.stopPreview(); 101 | mCamera.release(); 102 | mCamera = null; 103 | } 104 | 105 | public int getDisplayOrientation(){ 106 | Display display = ((WindowManager)getContext().getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay(); 107 | int rotation = display.getRotation(); 108 | int degrees = 0; 109 | switch (rotation){ 110 | case Surface.ROTATION_0: 111 | degrees = 0; 112 | break; 113 | case Surface.ROTATION_90: 114 | degrees = 90; 115 | break; 116 | case Surface.ROTATION_180: 117 | degrees = 180; 118 | break; 119 | case Surface.ROTATION_270: 120 | degrees = 270; 121 | break; 122 | } 123 | Camera.CameraInfo info = new Camera.CameraInfo(); 124 | Camera.getCameraInfo(Camera.CameraInfo.CAMERA_FACING_BACK, info); 125 | int result = (info.orientation - degrees + 360) % 360; 126 | return result; 127 | } 128 | 129 | @Override 130 | public void onPreviewFrame(final byte[] data, final Camera camera) { 131 | synchronized (lock){ 132 | // 处理data 133 | Camera.Size previewSize = camera.getParameters().getPreviewSize(); 134 | Plate[] plates = HyperLPR3.getInstance().plateRecognition(data, previewSize.height, previewSize.width, HyperLPR3.CAMERA_ROTATION_270, HyperLPR3.STREAM_YUV_NV21); 135 | for (Plate plate : plates) { 136 | Log.i(TAG, "" + plate.toString()); 137 | } 138 | 139 | if(!isStopReg && plates.length > 0) { 140 | // isStopReg = true; 141 | sendPlate(plates); 142 | } 143 | 144 | } 145 | } 146 | 147 | private void sendPlate(Plate[] plates){ 148 | EventBus.getDefault().post(plates); 149 | } 150 | 151 | 152 | private void openCameraOriginal(){ 153 | try { 154 | mCamera = Camera.open(); 155 | }catch (Exception e){ 156 | Log.e(TAG, "camera is not available"); 157 | } 158 | } 159 | 160 | private class CameraHandlerThread extends HandlerThread { 161 | Handler handler; 162 | public CameraHandlerThread(String name) { 163 | super(name); 164 | start(); 165 | handler = new Handler(getLooper()); 166 | } 167 | 168 | synchronized void notifyCameraOpened(){ 169 | notify(); 170 | } 171 | 172 | void openCamera(){ 173 | handler.post(new Runnable() { 174 | @Override 175 | public void run() { 176 | openCameraOriginal(); 177 | notifyCameraOpened(); 178 | } 179 | }); 180 | try { 181 | wait(); 182 | }catch (Exception e){ 183 | Log.e(TAG, "wait was interrupted"); 184 | } 185 | } 186 | } 187 | 188 | @Override 189 | public boolean onTouchEvent(MotionEvent event) { 190 | if(event.getPointerCount() == 2){ 191 | switch (event.getAction()){ 192 | case MotionEvent.ACTION_POINTER_DOWN: 193 | oldDist = getFingerSpacing(event); 194 | break; 195 | case MotionEvent.ACTION_MOVE: 196 | float newDist = getFingerSpacing(event); 197 | if(newDist > oldDist){ 198 | handleZoom(true, mCamera); 199 | }else if(newDist < oldDist){ 200 | handleZoom(false, mCamera); 201 | } 202 | oldDist = newDist; 203 | break; 204 | } 205 | } 206 | return true; 207 | } 208 | 209 | private float getFingerSpacing(MotionEvent event){ 210 | float x = event.getX(0) - event.getX(1); 211 | float y = event.getY(0) - event.getY(1); 212 | return (float) Math.sqrt(x * x + y * y); 213 | } 214 | 215 | private void handleZoom(boolean isZoomIn, Camera camera){ 216 | Camera.Parameters parameters = camera.getParameters(); 217 | if (parameters.isZoomSupported()){ 218 | int maxZoom = parameters.getMaxZoom(); 219 | int zoom = parameters.getZoom(); 220 | if (isZoomIn && zoom < maxZoom){ 221 | zoom++; 222 | }else if(zoom > 0){ 223 | zoom--; 224 | } 225 | parameters.setZoom(zoom); 226 | camera.setParameters(parameters); 227 | }else { 228 | Log.e(TAG, "handleZoom: "+"the device is not support zoom"); 229 | } 230 | } 231 | 232 | private void setPreviewFocus(Camera camera){ 233 | Camera.Parameters parameters = camera.getParameters(); 234 | List focusList = parameters.getSupportedFocusModes(); 235 | if(focusList.contains(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE)){ 236 | parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE); 237 | } 238 | camera.setParameters(parameters); 239 | } 240 | } 241 | -------------------------------------------------------------------------------- /app/src/main/java/com/hyperai/hyperlpr_sdk_demo/MainActivity.java: -------------------------------------------------------------------------------- 1 | package com.hyperai.hyperlpr_sdk_demo; 2 | 3 | import androidx.appcompat.app.AppCompatActivity; 4 | import androidx.core.app.ActivityCompat; 5 | 6 | import android.app.Activity; 7 | import android.content.Context; 8 | import android.content.Intent; 9 | import android.content.pm.PackageManager; 10 | import android.graphics.Bitmap; 11 | import android.graphics.BitmapFactory; 12 | import android.graphics.Color; 13 | import android.os.Bundle; 14 | import android.util.Log; 15 | import android.view.View; 16 | import android.widget.Button; 17 | import android.widget.ImageView; 18 | import android.widget.TextView; 19 | 20 | import com.bumptech.glide.Glide; 21 | import com.hyperai.hyperlpr3.HyperLPR3; 22 | import com.hyperai.hyperlpr3.bean.HyperLPRParameter; 23 | import com.hyperai.hyperlpr3.bean.Plate; 24 | import com.yuyh.library.imgsel.ISNav; 25 | import com.yuyh.library.imgsel.common.ImageLoader; 26 | import com.yuyh.library.imgsel.config.ISListConfig; 27 | 28 | import java.util.List; 29 | 30 | 31 | public class MainActivity extends AppCompatActivity { 32 | 33 | private Button cameraBtn; 34 | private Button albumBtn; 35 | private Context mCtx; 36 | private static final int REQUEST_LIST_CODE = 0; 37 | private static final int REQUEST_CAMERA_CODE = 1; 38 | 39 | private final String TAG = "HyperLPR-App"; 40 | 41 | private ImageView imageView; 42 | 43 | private TextView mResult; 44 | 45 | 46 | private static final int REQUEST_EXTERNAL_STORAGE = 1; 47 | private static final String[] PERMISSIONS_STORAGE = { 48 | "android.permission.READ_EXTERNAL_STORAGE", 49 | "android.permission.WRITE_EXTERNAL_STORAGE", 50 | "android.permission.CAMERA"}; 51 | 52 | public static void verifyStoragePermissions(Activity activity) { 53 | 54 | try { 55 | //检测是否有写的权限 56 | int permission = ActivityCompat.checkSelfPermission(activity, 57 | "android.permission.WRITE_EXTERNAL_STORAGE"); 58 | ActivityCompat.requestPermissions(activity, PERMISSIONS_STORAGE, REQUEST_EXTERNAL_STORAGE); 59 | 60 | if (permission != PackageManager.PERMISSION_GRANTED) { 61 | // 没有写的权限，去申请写的权限，会弹出对话框 62 | ActivityCompat.requestPermissions(activity, PERMISSIONS_STORAGE, REQUEST_EXTERNAL_STORAGE); 63 | } 64 | } catch (Exception e) { 65 | e.printStackTrace(); 66 | } 67 | } 68 | 69 | @Override 70 | protected void onCreate(Bundle savedInstanceState) { 71 | super.onCreate(savedInstanceState); 72 | setContentView(R.layout.activity_main); 73 | mCtx = this; 74 | cameraBtn = findViewById(R.id.cameraBtn); 75 | albumBtn = findViewById(R.id.albumBtn); 76 | imageView = findViewById(R.id.imageView); 77 | mResult = findViewById(R.id.mResult); 78 | 79 | verifyStoragePermissions(this); 80 | 81 | 82 | // 车牌识别算法配置参数 83 | HyperLPRParameter parameter = new HyperLPRParameter() 84 | .setDetLevel(HyperLPR3.DETECT_LEVEL_LOW) 85 | .setMaxNum(1) 86 | .setRecConfidenceThreshold(0.85f); 87 | // 初始化(仅执行一次生效) 88 | HyperLPR3.getInstance().init(this, parameter); 89 | 90 | ISNav.getInstance().init(new ImageLoader() { 91 | @Override 92 | public void displayImage(Context context, String path, ImageView imageView) { 93 | Glide.with(context).load(path).into(imageView); 94 | } 95 | }); 96 | 97 | cameraBtn.setOnClickListener(new View.OnClickListener() { 98 | @Override 99 | public void onClick(View view) { 100 | Intent intent = new Intent(MainActivity.this, CameraActivity.class); 101 | MainActivity.this.startActivity(intent); 102 | } 103 | }); 104 | 105 | albumBtn.setOnClickListener(new View.OnClickListener() { 106 | @Override 107 | public void onClick(View view) { 108 | 109 | // 自由配置选项 110 | ISListConfig config = new ISListConfig.Builder() 111 | // 是否多选, 默认true 112 | .multiSelect(false) 113 | // 是否记住上次选中记录, 仅当multiSelect为true的时候配置，默认为true 114 | .rememberSelected(false) 115 | // “确定”按钮背景色 116 | .btnBgColor(Color.GRAY) 117 | // “确定”按钮文字颜色 118 | .btnTextColor(Color.BLUE) 119 | // 使用沉浸式状态栏 120 | .statusBarColor(Color.parseColor("#3F51B5")) 121 | // 返回图标ResId 122 | .backResId(androidx.appcompat.R.drawable.abc_cab_background_top_mtrl_alpha) 123 | // 标题 124 | .title("图片") 125 | // 标题文字颜色 126 | .titleColor(Color.WHITE) 127 | // TitleBar背景色 128 | .titleBgColor(Color.parseColor("#3F51B5")) 129 | // 裁剪大小。needCrop为true的时候配置 130 | .cropSize(1, 1, 200, 200) 131 | .needCrop(false) 132 | // 第一个是否显示相机，默认true 133 | .needCamera(false) 134 | // 最大选择图片数量，默认9 135 | .maxNum(1) 136 | .build(); 137 | 138 | // 跳转到图片选择器 139 | ISNav.getInstance().toListActivity(mCtx, config, REQUEST_LIST_CODE); 140 | } 141 | }); 142 | 143 | } 144 | 145 | 146 | @Override 147 | protected void onActivityResult(int requestCode, int resultCode, Intent data) { 148 | super.onActivityResult(requestCode, resultCode, data); 149 | Bitmap bitmap = null; 150 | String showText = ""; 151 | // 图片选择结果回调 152 | if (requestCode == REQUEST_LIST_CODE && resultCode == RESULT_OK && data != null) { 153 | List pathList = data.getStringArrayListExtra("result"); 154 | Log.i(TAG, pathList.get(0)); 155 | bitmap = BitmapFactory.decodeFile(pathList.get(0)); 156 | } else if (requestCode == REQUEST_CAMERA_CODE && resultCode == RESULT_OK && data != null) { 157 | String path = data.getStringExtra("result"); 158 | Log.i(TAG, path); 159 | bitmap = BitmapFactory.decodeFile(path); 160 | } 161 | if (bitmap != null) { 162 | 163 | imageView.setImageBitmap(bitmap); 164 | Plate[] plates = HyperLPR3.getInstance().plateRecognition(bitmap, HyperLPR3.CAMERA_ROTATION_0, HyperLPR3.STREAM_BGRA); 165 | for (Plate plate: plates) { 166 | String type = "未知车牌"; 167 | if (plate.getType() != HyperLPR3.PLATE_TYPE_UNKNOWN) { 168 | type = HyperLPR3.PLATE_TYPE_MAPS[plate.getType()]; 169 | } 170 | String pStr = "[" + type + "]" + plate.getCode() + "\n"; 171 | showText += pStr; 172 | mResult.setText(showText); 173 | 174 | } 175 | } 176 | } 177 | } -------------------------------------------------------------------------------- /app/src/main/res/drawable-v24/ic_launcher_foreground.xml: -------------------------------------------------------------------------------- 1 | 7 | 8 | 9 | 15 | 18 | 21 | 22 | 23 | 24 | 30 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_launcher_background.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 115 | 120 | 125 | 130 | 135 | 140 | 145 | 150 | 155 | 160 | 165 | 170 | 171 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_camera.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 8 | 14 | 15 | 23 | 24 | 25 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 8 | 9 |