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Dominykas Šlikas, Aušra Kalantaitė, Darius Popovas, Eimuntas Kazimieras Paršeliūnas
On optimization issue to generate the digital open space surface
| Conference Information: |
9th International Conference “Environmental Engineering”, 22–23 May 2014, Vilnius, LITHUANIA |
| Source: |
ICEE-2014 - International Conference on Environmental
Engineering |
| Book Series: |
International Conference on Environmental Engineering
(ICEE) Selected papers |
| ISSN: |
eISSN 2029-7092 online |
| ISBN: |
eISBN 978-609-457-640-9 |
| ISBN: |
ISBN 978-609-457-690-4 CD |
| Year: |
2014 |
| Publisher: |
Vilnius Gediminas Technical University Press Technika |
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Abstract
We proposed the algorithm to generate the digital open space surface model
(DOSM), which supplements the Earth’s surface (Digital Surface Model – DSM)
and the relief surface (Digital Terrain Model – DTM) model group. The open
space is characterized as the space, which is restricted by the surface,
transient physical surface of the Earth, on the surface of natural and artificial
objects and the distances, in which between these irregularities of the surface
are not lower than the prescribed tolerances. The digital open space model is
slightly different from other models, because it is described by the cell size,
defining the minimal possible free space volumes, and it is free from the spatial
obstacles also. During generation of the digital open space surface it is necessary
to optimize the grid to obtain the wider open space. The goal is to get the minimal
sum of the heights of all grid cells. It is suggested to apply algorithm, which
implements the iteration process of the grid adjustment along the coordinate axis.
Keywords: Digital Open Space Model; Digital Surface Model; Digital Terrain Model.
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