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Strategies to scan pictures with automata based on Wang tiles

Published online by Cambridge University Press:  15 March 2011

Violetta Lonati  and
Matteo Pradella
Violetta Lonati
Affiliation:
Dipartimento di Scienze dell'Informazione, Università degli Studi di Milano, Via Comelico 39/41, 20135 Milano, Italy; lonati@dsi.unimi.it
Matteo Pradella
Affiliation:
IEIIT, Consiglio Nazionale delle Ricerche, Via Golgi 42, 20133 Milano, Italy; pradella@elet.polimi.it
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Abstract

Wang automata are devices for picture language recognition recently introduced by us, which characterize the class REC of recognizable picture languages. Thus, Wang automata are equivalent to tiling systems or online tessellation acceptors, and are based like Wang systems on labeled Wang tiles. The present work focus on scanning strategies, to prove that the ones Wang automata are based on are those following four kinds of movements: boustrophedonic, “L-like”, “U-like”, and spirals.

Keywords

Picture languages2D languagesWang systems2D automatascanning strategies

Information

Type
Research Article
Information
RAIRO - Theoretical Informatics and Applications , Volume 45 , Issue 1: ICTCS 09 , January 2011 , pp. 163 - 180
Copyright
© EDP Sciences, 2011

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