OpenCV in Android Studio

OpenCV in Android Studio

android studio opencv c++
opencv android gradle
opencv android apk
opencv android python
opencv android camera
image processing using opencv in android studio
opencv android studio face detection
how to configure opencv with android studio

I want to use OpenCV library in my app with Android Studio. I followed instructions found here but I get error

Configuration with name 'default' not found

What can be wrong?

I use Android Studio 1.0 with gradle 2.2.1.


OpenCV in Android Studio, Importing OpenCV in Android Studio; Fixing Possible Gradle Sync Errors; Adding OpenCV as a Dependency; Adding Native Libraries; Using  Import OpenCV to Android Studio, From File -> New -> Import Module. Choose \ OpenCV - android - sdk \ sdk \ java Leave the default options and then, click Finish.


Android, PS: The following tutorial will show you integrating OpenCV 3.4.3 in Native Android project which means integrate it in Android Studio(version 3.2.1)  A Beginner’s Guide to Setting up OpenCV Android Library on Android Studio Step 1: Download OpenCV Android Library. Go to the OpenCV Android Sourceforge page and download Step 2: Setup project. Create a new Android project using Android Studio only if you have not Step 3: Import OpenCV


For everyone who felt they want to run away with all the steps and screen shots on the (great!) above answers, this worked for me with android studio 2.2.1:

  1. Create a new project, name it as you want and take the default (minSdkVersion 15 is fine).
  2. Download the zip file from here: https://sourceforge.net/projects/opencvlibrary/files/opencv-android/ (I downloaded 3.1.0 version, but there may be a newer versions).
  3. Unzip the zip file, the best place is in your workspace folder, but it not really matter.
  4. Inside Android Studio, click File->New-> Import Module and navigate to \path_to_your_unzipped_file\OpenCV-android-sdk\sdk\java and hit Ok, then accept all default dialogs.
  5. In the gradle file of your app module, add this to the dependencies block:

    dependencies {
        compile project(':openCVLibraryXYZ')
        //rest of code
    }
    

Where XYZ is the exact version you download, for example in my case:

    dependencies {
        compile project(':openCVLibrary320')
        //rest of code
    }

A Guide to Preparing OpenCV for Android, Confirm your installation; java –version does the trick! Download Android Studio here. Setup and Integration: OpenCV for Android. Step 1: Download the OpenCV​  Create a new Android Studio project using the project wizard (Menu:/File/New Project): Verify that your app runs correctly. Try changing something like the "Hello World" text Download the OpenCV package for Android v3.1.0 and unzip it in some temporary directory somewhere. From Android


Android Studio 3.4 + OpenCV 4.1

  1. Download the latest OpenCV zip file from here (current newest version is 4.1.0) and unzip it in your workspace or in another folder.

  2. Create new Android Studio project normally. Click File->New->Import Module, navigate to /path_to_unzipped_files/OpenCV-android-sdk/sdk/java, set Module name as opencv, click Next and uncheck all options in the screen.

  3. Enable Project file view mode (default mode is Android). In the opencv/build.gradle file change apply plugin: 'com.android.application' to apply plugin: 'com.android.library' and replace application ID "org.opencv" with

    minSdkVersion 21
    targetSdkVersion 28
    

    (according the values in app/build.gradle). Sync project with Gradle files.

  4. Add this string to the dependencies block in the app/build.gradle file

    dependencies {
        ...
        implementation project(path: ':opencv')
        ...
    }
    
  5. Select again Android file view mode. Right click on app module and goto New->Folder->JNI Folder. Select change folder location and set src/main/jniLibs/.

  6. Select again Project file view mode and copy all folders from /path_to_unzipped_files/OpenCV-android-sdk/sdk/native/libs to app/src/main/jniLibs.

  7. Again in Android file view mode right click on app module and choose Link C++ Project with Gradle. Select Build System ndk-build and path to OpenCV.mk file /path_to_unzipped_files/OpenCV-android-sdk/sdk/native/jni/OpenCV.mk.

    path_to_unzipped_files must not contain any spaces, or you will get error!

To check OpenCV initialization add Toast message in MainActivity onCreate() method:

Toast.makeText(MainActivity.this, String.valueOf(OpenCVLoader.initDebug()), Toast.LENGTH_LONG).show();

If initialization is successful you will see true in Toast message else you will see false.

A Proper Beginner's Guide to Installing OpenCV Android in Android , In Android Studio, open the window File > Project Structure. In the section “SDK Location”, set the path to “Android NDK Location” to the path of the directory you​  Import OpenCV to Android Studio, From File -> New -> Import Module, choose sdk/java folder in the unzipped opencv archive. Update build.gradle under imported OpenCV module to update 4 fields to match your project build.gradle a) compileSdkVersion b) buildToolsVersion c) minSdkVersion and 4) targetSdkVersion.


Anybody facing problemn while creating jniLibs cpp is shown ..just add ndk ..

A Beginner's Guide to Installing OpenCV Android in Android Studio, (3) Import OpenCV SDK as a Module in Android Studio. (4) Set OpenCV Version. in Project (5) Fix Library association in project. (6) Done! Now  r/opencv: For I was blind but now Itseez. Thanks for the response! Yea I have been getting to grips with android studio, it definitely likes to use the ram, and my battery has never drained so quick!


[PDF] Tutorial on OpenCV for Android Setup, How to Integrate OpenCV 4 in Android Studio? Flutter Tutorial for Beginners - Build iOS and Android Apps with Google's Flutter & Dart - Duration: 3:22:19. Academind 920,020 views


Creating a new OpenCV project in Android Studio, So, this is the part one of my new video series on Android app development. So in this video we will integrate the OpenCV SDK in our Android Studio Project. If you like the video please like share


Learn OpenCV in Android Studio Part 1 (Integration),