OpenALPR is an open source Automatic License Plate Recognition library written in C++. The library analyzes images and identifies license plates. The output is the text representation of any license plate characters found in the image.

The OpenALPR daemon allows you to monitor a camera stream for license plate numbers in the background. Alprd runs as a daemon process on Linux.

The plate numbers can be streamed to another server (via HTTP posts) or can be consumed programmatically via a beanstalkd queue.