Range size functions
Massimo Ferri, Patrizio Frosini · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1995
1. BASIC DEFINITIONSLet M be a subset of the Euclidean plane E2. Every continuous function co from M to the real numbers will becalled a measuring function on M. In such a case we shall call the pair (M, co) a size pair.In the following we shall suppose a size pair (M, co) is given.For every real number y we shall say that two points F, Q