The Hypermedia Image Processing Reference (HIPR) was developed at the Department of Artificial Intelligence in the University of Edinburgh in order to provide a set of computer-based tutorial materials for use in taught courses on image processing and machine vision. The package provides on-line reference and tutorial information on a wide range of image processing operations, extensively illustrated with actual digitized images, and bound together in a hypermedia format for easy browsing, searching and cross-referencing.