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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20102 - Construction engineering, Municipal and structural engineering

Project

<a href="/en/project/GA21-29389S" target="_blank" >GA21-29389S: Experimental and numerical assessment of the bearing capacity of notches in timber beams at arbitrary locations using LEFM</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Article name in the collection

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

ISBN

9781713873273

ISSN

—

e-ISSN

—

Number of pages

6

Pages from-to

558-563

Publisher name

Curran Associates

Place of publication

Red Hook (NY)

Event location

Oslo

Event date

Jun 19, 2023

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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