| Issue |
RAIRO-Theor. Inf. Appl.
Volume 40, Number 4, October-December 2006
|
|
|---|---|---|
| Page(s) | 537 - 550 | |
| DOI | https://doi.org/10.1051/ita:2006038 | |
| Published online | 08 November 2006 | |
Picture codes
Department of Mathematics,
Aristotle University of Thessaloniki,
54006 Thessaloniki, Greece;
bozapali@math.auth.gr; arxontia@math.auth.gr
Received:
20
October
2003
Accepted:
15
June
2005
We introduce doubly-ranked (DR) monoids in order to study picture codes. We show that a DR-monoid is free iff it is pictorially stable. This allows us to associate with a set C of pictures a picture code B(C) which is the basis of the least DR-monoid including C. A weak version of the defect theorem for pictures is established. A characterization of picture codes through picture series is also given.
Mathematics Subject Classification: 94B60
Key words: Picture codes / picture series.
© EDP Sciences, 2006
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