Android Studio开发环境集成OpenCV for Android详情

最新推荐文章于 2025-01-20 09:29:16 发布

FlyT0Yan

最新推荐文章于 2025-01-20 09:29:16 发布

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分类专栏： android 文章标签： opencv

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本文详细介绍了如何在Android Studio中集成OpenCV for Android。从下载OpenCV库，新建Android项目，导入模块，到修改配置文件和添加依赖，再到实现代码，最后测试运行，确保相机权限开启。

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一、下载 OpenCV for Android

可以从OpenCV官网下载 —— [ OpenCV for Android]
下载后将其解压至电脑任意文件下，本文为

二、Android Studio 新建项目

三、Android Studio 导入modul

选择module路径，根据实际解压路径
然后一直next直到finish

添加module依赖

三、Android Studio 集成OpenCV

首先把OpenCV的build.gradle中compileSdkVersion，buildToolsVersion，minSdkVersion，targetSdkVersion版本号改何项目build.gradle版本一致。
然后把解压文件中如下图libs改名为jniLibs复制到项目main里

在Androidmanifest.xml中添加

<application
    android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity"
            android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
            android:screenOrientation="landscape"
            android:configChanges="keyboardHidden|orientation">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
</application>
<uses-permission android:name="android.permission.CAMERA"/>
<uses-feature android:name="android.hardware.camera" android:required="false"/>
<uses-feature android:name="android.hardware.camera.autofocus" android:required="false"/>
<uses-feature android:name="android.hardware.camera.front" android:required="false"/>
<uses-feature android:name="android.hardware.camera.front.autofocus" android:required="false"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

activity_main.xml代码如下

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:opencv="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="cuit.opencvandgl.MainActivity">

    <org.opencv.android.JavaCameraView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/camera_view"
        opencv:show_fps="true"
        opencv:camera_id="any"/>

</RelativeLayout>

MainActivity代码如下

public class MainActivity extends Activity {
    private static String TAG = "MainActivity";
    private CameraBridgeViewBase mCVCamera;

    BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) {
        @Override
        public void onManagerConnected(int status) {
            switch (status) {
                case LoaderCallbackInterface.SUCCESS:
                    android.util.Log.i("TAG", "OpenCV loaded successfully");
                    mCVCamera.enableView();
                    break;
                default:
                    break;
            }
            super.onManagerConnected(status);
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mCVCamera = (CameraBridgeViewBase) findViewById(R.id.camera_view);
        mCVCamera.setCvCameraViewListener(new CameraBridgeViewBase.CvCameraViewListener2() {
            @Override
            public void onCameraViewStarted(int width, int height) {

            }

            @Override
            public void onCameraViewStopped() {

            }

            @Override
            public Mat onCameraFrame(CameraBridgeViewBase.CvCameraViewFrame inputFrame) {
                android.util.Log.e("TAG", "OpenCV 调用了");
                return inputFrame.rgba();
            }
        });
    }

    @Override
    public void onResume() {
        super.onResume();
        if (!OpenCVLoader.initDebug()) {
            Log.d(TAG, "OpenCV library not found!");
        } else {
            Log.d(TAG, "OpenCV library found inside package. Using it!");
            mLoaderCallback.onManagerConnected(LoaderCallbackInterface.SUCCESS);
        }
    }

    @Override
    public void onDestroy() {
        if(mCVCamera!=null){
            mCVCamera.disableView();
        }
        super.onDestroy();
    }
}