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Measurements of complex free water surface topography using a photogrammetric method
ID
Pleterski, Žan
(
Avtor
),
ID
Hočevar, Marko
(
Avtor
),
ID
Bizjan, Benjamin
(
Avtor
),
ID
Kolbl Repinc, Sabina
(
Avtor
),
ID
Rak, Gašper
(
Avtor
)
PDF - Predstavitvena datoteka,
prenos
(10,18 MB)
MD5: F47F225A223585ADA11FB94E3A3D6D7D
URL - Izvorni URL, za dostop obiščite
https://www.mdpi.com/2072-4292/15/19/4774
Galerija slik
Izvleček
This paper presents a photogrammetry-based system for capturing turbulent aerated flow topography in a laboratory environment, especially for complex hydraulic phenomena character-ised by turbulent, non-stationary, and non-homogeneous aerated flows. It consists of ten high-resolution cameras equipped with monochromatic sensors and custom-built LED lights, all synchronised for accurate data acquisition. Post processing involves Structure-from-Motion and Multi-View Stereo techniques to calculate exterior and interior orientation parameters that ensure accurate alignment within a desired coordinate system, and conversion to point clouds. The proposed method showed great potential for capturing free water surface topography of turbulent aerated flows with high spatial and temporal resolution over the entire field of view of the cameras. Due to the unique capabilities of this system, direct comparisons with existing benchmarks were not possible. Instead, average free water surface profiles were derived from selected control cross sections, using 2D LIDAR measurements for verification. Both the LIDAR and photogrammetry averaged profiles showed remarkably good agreement, with deviations within ±20 mm. Validation showed that photogrammetry can be used to measure the complex aerated turbulent free water surface. In this way, this approach, involving consecutive image dataset acquisition at predefined intervals, is proving to be a valuable tool for observing, visualising, analysing, investigating, and gaining a comprehensive understanding of the dynamics of the free water surface.
Jezik:
Angleški jezik
Ključne besede:
turbulent aerated flow
,
free water surface topography
,
non-intrusive measuring methods
,
structure-from-motion
Vrsta gradiva:
Članek v reviji
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
FGG - Fakulteta za gradbeništvo in geodezijo
FS - Fakulteta za strojništvo
Status publikacije:
Objavljeno
Različica publikacije:
Recenzirani rokopis
Leto izida:
2023
Št. strani:
20 str.
Številčenje:
Vol. 15, iss. 19, art. 4774
PID:
20.500.12556/RUL-151809
UDK:
532:528.7
ISSN pri članku:
2072-4292
DOI:
10.3390/rs15194774
COBISS.SI-ID:
166648579
Datum objave v RUL:
20.10.2023
Število ogledov:
462
Število prenosov:
62
Metapodatki:
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Objavi na:
Gradivo je del revije
Naslov:
Remote sensing
Skrajšan naslov:
Remote sens.
Založnik:
MDPI
ISSN:
2072-4292
COBISS.SI-ID:
32345133
Licence
Licenca:
CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:
http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:
To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Sekundarni jezik
Jezik:
Slovenski jezik
Naslov:
Meritve kompleksne topografije vodne gladine z uporabo fotorametrijske metode
Ključne besede:
turbulenten ozračeni tok
,
topografija vodne gladine
,
brezkontaktne merilne metode
,
structure-from-motion
,
dinamika voda
Projekti
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
P2-0401
Naslov:
Energetsko strojništvo
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
P2-0180
Naslov:
Vodarstvo in geotehnika: orodja in metode za analize in simulacije procesov ter razvoj tehnologij
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
J2-3056
Naslov:
Razvoj optične merilne metode za merjenje gladine turbulentnega dvofaznega toka s prosto gladino
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