The IBIS tabular file format, together with its associated IBISFIL subroutine library and programs, forms the heart of the IBIS system and has proved to be very useful tool for many diverse applications, such as multispectral classification, image rubbersheeting and mosaicing, stereo matching, image indexing and other geographic/cartographic applications.
With the advent of the VICAR Unix-Port project it has now become timely to reconsider the IBIS system, its file formats, and the issues arising in the effort to port the system to Unix.