Jan 06, 2016  On www.opencv.org there is a link to download the library for Android. Download it, unpack it. If you've followed the post about compiling OpenCV yourself, you already have a directory in your homedirectory somewhere: opencv/ opencv/opencv-3.1/ opencv/build/ now, add the unpacked Android. Add the OpenCV library project to your workspace the same way as for the async initialization above. Use menu File - Import - Existing project in your workspace, press Browse button and select OpenCV SDK path (OpenCV-2.4.13-android-sdk/sdk).

Jun 22, 2017 The OpenCV-android Download Page. Step 2: Create a new project.It’s always preferable to select higher API versions as the Minimum SDK, but since my spare phone is old, I’m going to stick with. This tutorial guides Android developers in preparing the popular library OpenCV (Open Computer Vision) for use. Through a step-by-step guide, the library will be imported into Android Studio (the official IDE for Android). Oct 10, 2019  Download OpenCV for free. Open Source Computer Vision Library. The Open Source Computer Vision Library has 2500 algorithms, extensive documentation and sample code for real-time computer vision. It works on Windows, Linux, Mac OS X, Android and iOS. Android OpenCV contains different sample projects that you can test and see how things work but in our next tutorial we will build a simple camera app using android OpenCV library. Free feel to download the source code from our Github account. If you have questions or suggestions kindly use the comment box below.

OpenCV4Android, packaged as a .aar for direct use without depending on the stupid OpenCV Manager app.

Building an .aar of OpenCV-3.x.y for yourself

Building OpenCV-3.x.y for Android is actually quite simple, its just not obvious where to get the pieces and the OpenCV docs hard-sell the 'OpenCV Manager' in favour of the better and easier direct integration approach.

Here's the steps I used to create my .aar:

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1. Download and extract the OpenCV4Android bundle
2. Create a Library Project in Android Studio
3. Copy the java source files from OpenCV4Android into src/main/java
4. Drop the OpenCV native libraries into src/main/jniLibs
5. Run the gradle build
6. Et voila, .aar file

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Using your glorious new .aar

Reference the maven repository you've deployed your .aar to, e.g. mine (which I can't stop you from using ;)) is:

Include the .aar in your build.gradle file:

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Bootstrap OpenCV in your Java code:

Optional but recommended: to keep the downloaded APK size to a minimum, build separate APK's per architecture (approx 10MB each vs 42MB for universal) by placing the following inside the 'android' gradle directive of your application's build.gradle:

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Disclaimer: This project is simply my bundling of OpenCV as an Android Library. I am not otherwise involved in the OpenCV project, and all credit for the wonderful OpenCV library goes to the developers thereof.