J. Lasenby, E. Bayro-Corrochano, A. Lasenby and G. Sommer.
A new framework for the computation of invariants and multiple view constraints in computer vision
Proceedings of the International Conference on Image Processing (ICIP), 1996, (1997).

Abstract: In this paper we present geometric algebra as a new framework for the theory and computation of invariants and multiple-view constraints in computer vision. We discuss the formation of 3D projective invariants and a wholly geometric formulation of constraints from a number of images.

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