The LIRE (Lucene Image REtrieval) library a simple way to create a Lucene index of image features for content based image retrieval (CBIR). The used features are taken from the MPEG-7 Standard: ScalableColor, ColorLayout and EdgeHistogram. Furthermore methods for searching the index are provided.
The LIRE library is part of the Caliph & Emir project and aims to provide the CBIR features of Caliph & Emir to other Java projects in an easy and light weight way.
For more information see: http://www.semanticmetadata.net/lire/