@InProceedings{brun-03,


author = {Luc Brun and Walter Kropatsch},
title = {Implicit encoding of combinatorial Pyramids},
booktitle = {Proceedings of the Computer Vision Winter Workshop},
pages = {49-54},
year = 2003,
editor = {Ondrej Drbohlav},
address = {Valtice, Czech Reublic},
month = {February},
url = { article:=https://brunl01.users.greyc.fr/ARTICLES/cvww2003.pdf},
abstract = " An irregular pyramid consists of a stack of
successively reduced graphs. Each smaller graph is deduced from the
preceding one by the contraction or the removal of a set of
edges. Using a fixed decimation ratio we need approximately
O(log(image size)) graphs to encode the whole
pyramid. A combinatorial map encodes a planar graph thanks to two
permutations encoding the edges and their orientation around the
vertices. We present in this article an encoding of a combinatorial
pyramid which allows to fold the whole pyramid in the base level
layer and provides at the same time a measure of the importance of
every pixel. Any reduced combinatorial maps of the pyramid maybe
directly retrieved from this encoding if needed.",
theme = {hierarchical}

 }