Note on a new class of metrics: touching metrics
В. В. Старовойтов · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1996
A new class of functions is studied. They are generalizations of the little-known `flower-shop distance'. We call them touching functions. Some of them are metrics, i.e. touching metrics (TM). Disks, circles and digital paths based on these metrics are also studied. The distance transform based on TMs is introduced and a scheme for the algorithm is given.