author = {Luc Brun and Walter Kropatsch}, title = {Defining regions within the Combinatorial Pyramid framework}, booktitle = {Proceedings of the Computer Vision Winter Workshop}, pages = {198-207}, year = 2002, theme = {hierarchical}, abstract = "Irregular Pyramids are defined as a stack of successively reduced graphs. Each vertex of a reduced graph is associated to a set of vertices in the base level graph named its receptive field. If the initial graph is deduced from a planar sampling grid its reduced versions are planar and each receptive field is a region of the initial grid. Combinatorial Pyramids are defined as a stack of successively reduced combinatorial maps. Combinatorial maps are based on half edges named darts and the receptive field of a dart is a sequence of darts in the base level combinatorial map. We present in this paper preliminary results showing how to define regions from the receptive fields of the darts.", url = {article(pdf):=https://brunl01.users.greyc.fr/ARTICLES/cvww2002.pdf}, editor = {Horst Wildenauer and Walter Kropatsch}, address = {Bad Ausse Austria}, month = {February}