Loki+Lire: A Framework to Create Web-based Multimedia Search Engines

In this paper we present Loki+Lire, a framework for the creation of web-based interfaces for search, annotation and presentation of multimedia data. The framework provides tools to ingest, transcode, present, annotate and index different types of media such as images, videos, audio files and textual documents. The front-end is compliant with the latest HTML5 standards, while the back-end allows system administrators to create processing pipelines that can be adapted for different tasks and purposes. The system has been developed in a modular way, aiming at creating loosely coupled components, letting developers to use it as a whole or to select only the parts that are needed to develop their own tools and systems.