Image processing in the Alexandria Digital Library project

The management of images, video, and in general, multimedia data, is an important issue in the design of digital libraries. In particular, the following problems stand out: efficient storage, fast retrieval, and protection of intellectual property. We outline below some of the recent advances in image processing in the context of the UCSB Alexandria Digital Library (ADL) project whose goal is to create a database of spatially indexed data. Maps and satellite images are among the main data sets in this project. The focus of this overview is on image retrieval using texture and on digital watermarking. A texture thesaurus for browsing aerial photographs and a wavelet based digital watermarking scheme are presented.