openalpr-android

openalpr-android

OpenALPR is an open source Automatic License Plate Recognition library written in C++ with bindings in C#, Java, Node.js, and Python. This project ports this library to Android. You can find the demo application apk at the releases tab.

Gradle Dependency

Repository

First, add the following to your app's build.gradle file:

repositories {
    maven { url "https://jitpack.io" }
}

Them include the openalpr-android dependency:

dependencies {

    // ... other dependencies here.    	
    compile 'com.github.SandroMachado:openalpr-android:1.1.2'
}

Usage

Code

Copy the OpenALPR configuration file to your android project assets directory /main/assets/runtime_data/openalpr.conf, open it and update the runtime_dir to your project directory (for instance, for the sample project the directory is: runtime_dir = /data/data/com.sandro.openalprsample/runtime_data). After that just follow the code example bellow. To see a full example check the sample application.

static final String ANDROID_DATA_DIR = "/data/data/com.sandro.openalprsample";

final String openAlprConfFile = ANDROID_DATA_DIR + File.separatorChar + "runtime_data" + File.separatorChar + "openalpr.conf";

String result = OpenALPR.Factory.create(MainActivity.this, ANDROID_DATA_DIR).recognizeWithCountryRegionNConfig("us", "", image.getAbsolutePath(), openAlprConfFile, 10);

Interface

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Sample Application

The repository also includes a sample application that can be tested with Android Studio.

Credits

• OpenALPR Parent Project
• OpenAlprDroidApp for the compiled sources and sample that helped port the project to an android library