On the use of ArUco markers in long term monitoring of timber structures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F23%3A00575794" target="_blank" >RIV/68378297:_____/23:00575794 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.52202/069179-0076" target="_blank" >https://doi.org/10.52202/069179-0076</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.52202/069179-0076" target="_blank" >10.52202/069179-0076</a>

Jazyk výsledku

angličtina

Název v původním jazyce

On the use of ArUco markers in long term monitoring of timber structures

Popis výsledku v původním jazyce

For research and monitoring purposes, there is a need to measure long-term displacements of parts, joints, etc. Of course, existing solutions (LVDT, Tell tales, etc.) can be used, but they are relatively expensive or inaccurate. The article describes a simple procedure based on an optical method using ArUco markers originating from computer vision applications (robotics). This technique uses not only marker tracking, but also along with it image rectification usingnprojective transformation, and thus works well in 2D structures (beams, walls). The illustrated principle allows to take only two images (the original and another one after a certain time) and to quantify the displacement and rotation of thenmarkers identified in the images. Reference points have to be specified. The displacement fields are then interpolated and a final map is produced. This can be of interest to anyone working in practice, conducting research on the long-termnbehavior of joints, monitoring the creep of wooden structures or for any monitoring purpose - including laboratory tasks.nThe article describes accuracy and error estimation and shows an example of use.

Název v anglickém jazyce

On the use of ArUco markers in long term monitoring of timber structures

Popis výsledku anglicky

For research and monitoring purposes, there is a need to measure long-term displacements of parts, joints, etc. Of course, existing solutions (LVDT, Tell tales, etc.) can be used, but they are relatively expensive or inaccurate. The article describes a simple procedure based on an optical method using ArUco markers originating from computer vision applications (robotics). This technique uses not only marker tracking, but also along with it image rectification usingnprojective transformation, and thus works well in 2D structures (beams, walls). The illustrated principle allows to take only two images (the original and another one after a certain time) and to quantify the displacement and rotation of thenmarkers identified in the images. Reference points have to be specified. The displacement fields are then interpolated and a final map is produced. This can be of interest to anyone working in practice, conducting research on the long-termnbehavior of joints, monitoring the creep of wooden structures or for any monitoring purpose - including laboratory tasks.nThe article describes accuracy and error estimation and shows an example of use.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

<a href="/cs/project/GA21-29389S" target="_blank" >GA21-29389S: Experimentální a numerický odhad únosnosti zářezu v nosnících z konstrukčního dřeva v obecném místě pomocí LEFM</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

WCTE 2023. Proceedings from the 13th World conference on timber engineering

ISBN

9781713873273

ISSN

—

e-ISSN

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Počet stran výsledku

6

Strana od-do

558-563

Název nakladatele

Curran Associates

Místo vydání

Red Hook (NY)

Místo konání akce

Oslo

Datum konání akce

19. 6. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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