Shortest inspection-path queries in simple polygons
Knauer, Christian ;  Rote, Günter ;  Universität <Berlin, Freie Universität> / Fachbereich Mathematik und Informatik

Main titleShortest inspection-path queries in simple polygons
AuthorKnauer, Christian
AuthorRote, Günter
InstitutionUniversität <Berlin, Freie Universität> / Fachbereich Mathematik und Informatik
No. of Pages6 S.
Series Freie Universität Berlin, Fachbereich Mathematik und Informatik : Ser. B, Informatik ; [20]05,05
KeywordsComputational geometry, Simple polygons, Shortest paths, Visibility
Classification (DDC)004 Data processing and Computer science
AbstractWe want to preprocess a simple n-vertex polygon P to
quickly determine the shortest path from a fixed source point s 2 P
to some point visible from a query point q 2 P. We call such queries
inspection-path queries.We give an algorithm that computes a data structure
which answers the queries in logarithmic time. The data structure
has O(n) size and can be computed in O(n log n) time.
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FU DepartmentDepartment of Mathematics and Computer Science
Other affiliation(s)Institut für Informatik
Year of publication2005
Type of documentMaps
Terms of use/Rights Nutzungsbedingungen
Created at2009-06-16 : 09:01:23
Last changed2015-01-22 : 04:42:20
Static URLhttp://edocs.fu-berlin.de/docs/receive/FUDOCS_document_000000002329