An effective way to represent quadtrees

@article{Gargantini1982AnEW,
  title={An effective way to represent quadtrees},
  author={Irene Gargantini},
  journal={Commun. ACM},
  year={1982},
  volume={25},
  pages={905-910}
}
  • I. Gargantini
  • Published 1 December 1982
  • Computer Science
  • Commun. ACM
A quadtree may be represented without pointers by encoding each black node with a quaternary integer whose digits reflect successive quadrant subdivisions. We refer to the sorted array of black nodes as the “linear quadtree” and show that it introduces a saving of at least 66 percent of the computer storage required by regular quadtrees. Some algorithms using linear quadtrees are presented, namely, (<italic>i</italic>) encoding a pixel from a 2<supscrpt><italic>n</italic></supscrpt> × 2… Expand
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