<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The use of photogrammetry during load tests of building components is a common practise all over the world. It is very effective thanks to its contactless approach, 3D measurement, fast data collection, and partial or full automation of image processing; it can deliver very accurate results. Multi-image convergent photogrammetry supported by artificial coded targets is the most accurate photogrammetric method when the targets are detected in an image with a higher degree of accuracy than a 0.1 pixel. It is possible to achieve an accuracy of 0.03 mm for all the points measured on the object observed if the camera is close enough to the object, and the positions of the camera and the number of shots are precisely planned. This contribution deals with the design of a special hanging frame for a DSLR camera used during the photogrammetric measurement of the deformation of flat concrete slab. The results of the photogrammetric measurements are compared to the results from traditional contact measurement techniques during load tests.</p></abstract>

The use of photogrammetry during load tests of building components is a common practise all over the world. It is very effective thanks to its contactless approach, 3D measurement, fast data collection, and partial or full automation of image processing; it can deliver very accurate results. Multi-image convergent photogrammetry supported by artificial coded targets is the most accurate photogrammetric method when the targets are detected in an image with a higher degree of accuracy than a 0.1 pixel. It is possible to achieve an accuracy of 0.03 mm for all the points measured on the object observed if the camera is close enough to the object, and the positions of the camera and the number of shots are precisely planned. This contribution deals with the design of a special hanging frame for a DSLR camera used during the photogrammetric measurement of the deformation of flat concrete slab. The results of the photogrammetric measurements are compared to the results from traditional contact measurement techniques during load tests.

Measurement of Flat Slab Deformations by the Multi-Image Photogrammetry Method

Slovak Journal of Civil Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

{"article-title":"Measurement of Flat Slab Deformations by the Multi-Image Photogrammetry Method"}

The use of photogrammetry during load tests of building components is a common practise all over the world. It is very effective thanks to its contactless...

Measurement of Flat Slab Deformations by the Multi-Image Photogrammetry Method

Published Online: Jan 13, 2018

Page range: 19 - 25

DOI: https://doi.org/10.1515/sjce-2017-0019

Keywords
Photogrammetry, Deformation measurement, Flat slab, Strain, Load test.

© Faculty of Civil Engineering, Slovak University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Measurement of Flat Slab Deformations by the Multi-Image Photogrammetry Method

Published Online: Jan 13, 2018

Page range: 19 - 25

DOI: https://doi.org/10.1515/sjce-2017-0019

KeywordsPhotogrammetry, Deformation measurement, Flat slab, Strain, Load test.

© Faculty of Civil Engineering, Slovak University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
Photogrammetry, Deformation measurement, Flat slab, Strain, Load test.