olemus
skemaatiline pilt, mis koosneb
pildi elementide telgjoontest

ISO/IEC 19794 (biomeetria):
objekti topoloogia pikselilaiune esitus
=
line representation of an object that is one pixel thick through the "middle" of the object and preserves the topology of the object

ülevaateid
https://en.wikipedia.org/wiki/Topological_skeleton
https://en.wikipedia.org/wiki/Morphological_skeleton
https://en.wikipedia.org/wiki/Skeletal_animation