Istituto di Scienza e Tecnologie dell'Informazione     
Fabbrini F., Montani C. Autumnal quadtrees. In: The Computer Journal, vol. 29 (5) pp. 472 - 474. British Computer Society, 1986.
Recently, methods have been defined and investigated for the encoding of quadtrees. Although these methods save storage space, they are normally less efficient. In this short note an artifice is suggested to encode quadtrees. It allows the preservation of the quadtree logical structure, permitting a memory saving higher than 75% without losing efficiency. The main characteristics of the new coding technique are compared with those of previous methods.

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