Olena is a platform dedicated to image processing and pattern recognition. Its core component is a generic and efficient C++ library, Milena. Milena provides a framework to implement simple, fast, safe, reusable and extensible image processing tool chains. The library provides many ready-to-use algorithms and image data structures. Algorithms are built upon classical entities from the image processing field. This design allows developers and practitioners to easily understand, modify, develop and extend new algorithms while retaining the core traits of Milena: genericity and efficiency.

The Olena platform also features additional modules such as Swilena, a component exposing Milena to other languages thanks to SWIG, and the SCRIBO module for Document Image Analysis.