Abstract
A two-dimensional code is defined as a set \(X\subseteq \Sigma ^{**}\) such that any picture over \(\Sigma \) is tilable in at most one way with pictures in \(X\). It is in general undecidable whether a set \(X\) of pictures is a code also in the finite case. Very recently in [3] strong prefix picture codes were defined as a decidable subclass that generalizes prefix string codes. Here a characterization for strong prefix codes that results in an effective procedure to construct them is presented. As a consequence there are also proved interesting results on the measure of strong prefix codes and a connection with the family of string prefix codes.
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Anselmo, M., Giammarresi, D., Madonia, M. (2015). Structure and Measure of a Decidable Class of Two-dimensional Codes. In: Dediu, AH., Formenti, E., Martín-Vide, C., Truthe, B. (eds) Language and Automata Theory and Applications. LATA 2015. Lecture Notes in Computer Science(), vol 8977. Springer, Cham. https://doi.org/10.1007/978-3-319-15579-1_24
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DOI: https://doi.org/10.1007/978-3-319-15579-1_24
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