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http://hdl.handle.net/1942/30979
Title: | Affine-Invariant Querying of Spatial Data using a Triangle-Based Logic | Authors: | HAESEVOETS, Sofie KUIJPERS, Bart Revesz, Peter Z. |
Issue Date: | 2020 | Publisher: | SPRINGER | Source: | GEOINFORMATICA, 24(4), p. 849-879 | Abstract: | If the same land area is photographed from two different angles, then a computer can recognize the two images to show the same land area by proving that the images are affine-invariant. In practice, images are abstracted as a type of spatial data that is a finite set of triangles. Hence we propose a simple affine-generic query language with variables over finite sets of triangles. The proposed query language is intuitive and has the same expressive power as the affine-generic fragment of first-order logic over the reals on triangle databases. | Notes: | revesz@cse.unl.edu sofie.haesevoets@hexagon.com; bart.kuijpers@uhasselt.be; Kuijpers, B (corresponding author), Hasselt Univ, Data Sci Inst, Databases & Theoret Comp Sci Res Grp, B-3590 Diepenbeek, Belgium. |
Other: | Kuijpers, B (corresponding author), Hasselt Univ, Data Sci Inst, Databases & Theoret Comp Sci Res Grp, B-3590 Diepenbeek, Belgium. sofie.haesevoets@hexagon.com; bart.kuijpers@uhasselt.be; revesz@cse.unl.edu | Keywords: | Affine-invariant queries;Spatial query languages;Weak perspective assumption | Document URI: | http://hdl.handle.net/1942/30979 | ISSN: | 1384-6175 | e-ISSN: | 1573-7624 | DOI: | 10.1007/s10707-020-00402-1 | ISI #: | WOS:000534541900001 | Rights: | Springer Science+Business Media, LLC, part of Springer Nature 2020 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2021 |
Appears in Collections: | Research publications |
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Haesevoets2020_Article_Affine-invariantQueryingOfSpat.pdf Restricted Access | Published version | 2.23 MB | Adobe PDF | View/Open Request a copy |
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