Using raster quasi-topology as a tool to study spatial entities

Yongli Li, Zhilin Li, Yong Qi Chen, Xiaoxia Li

Research output: Journal article publicationJournal articleAcademic researchpeer-review

6 Citations (Scopus)


The study of spatial entities needs a model that is not only fully observable and controllable, but also computable. Euclidean topology on R2is a usually used tool for this study, but it has the following two weaknesses. First, there exists some phenomenon of human perception of the spatial entity that cannot be simulated by it. Second, its observation of the basic geometric properties (interior, exterior, boundary) of the spatial entity lacks computability so that the model based on it lacks computability and cannot be directly used to practical systems. Consequently, in this paper, we present another tool for studying spatial entities - raster quasi-topology on R2and then compare the two tools.
Original languageEnglish
Pages (from-to)1425-1449
Number of pages25
Issue number9-10
Publication statusPublished - 1 Jan 2003


  • Cybernetics
  • Pansystems
  • Spatial data structures
  • Topology

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science (miscellaneous)
  • Theoretical Computer Science
  • Social Sciences (miscellaneous)
  • Engineering (miscellaneous)


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