J. Lasenby, E. Bayro-Corrochano, A.N. Lasenby and G. Sommer.
Geometric Algebra: a Framework for Computing Invariants in Computer Vision
Proceedings of the International Conference on Pattern Recognition (ICPR '96), Vienna.

Abstract: In this paper we present {\it geometric algebra} as a new framework for the theory and computation of invariants in computer vision and compare it with the currently popular Grassmann-Cayley algebra. We also discuss the formation of 3D projective invariants in terms of image coordinates.

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