Efficient model library access by projectively invariant indexing functions

Charlie Rothwell, Andrew Zisserman, Joe L. Mundy, David A. Forsyth

Abstract: Projectively invariant shape descriptors allow fast indexing into model libraries without the need for pose computation or camera calibration. Progress in building a model-based vision system for plane objects that uses algebraic projective invariants is described. A brief account of these descriptors is given, and the recognition system is described, giving examples of the invariant techniques working on real images.<