“…On one hand, it has been widely used to describe image analysis methods as ''knowledgebased''. Similar method attributes that have been used are ''rule-based'', ''model-based'', ''context-based'' (Strat and Fischler, 1991), ''CAD-based'' (Hansen and Henderson, 1989;Hoffman et al, 1989;Arman and Aggarwal, 1993), etc. In this context, we consider knowledge being more general than and including rules, models and context.…”