Publication detail
Amplitude measurement of small displacement using video magnification
ŘIČÁNEK, D.
Original Title
Amplitude measurement of small displacement using video magnification
Type
conference paper
Language
English
Original Abstract
Video magnification algorithms show promising results when used to amplify small vibrations. Measuring these small vibrations is integral in modal analysis of an object and is usually done using specialized vibrometers or accelerometers. Computer vision (CV) systems fall short in this task as the magnitude of the vibrations decreases because of a small SNR (Signal-to-Noise Ratio). In this paper we try to further improve the accuracy of the CV approach by adding video magnification into the image pre-processing stage, allowing the algorithms to measure even imperceptibly small vibrations. For this purpose, we have gather ground truth data with a laser vibrometer in tandem with high speed camera footage of a metal cantilever beam, vibrating in its first mode, and have trained a convolutional neural network for regression.
Keywords
EVM, phase-based, optical flow, PDV, ResNet18
Authors
ŘIČÁNEK, D.
Released
23. 4. 2024
Publisher
Brno University of Technology, Faculty of Electrical Engineering and Communication
Location
Brno
ISBN
978-80-214-6230-4
Book
Proceedings I of the 30th Conference STUDENT EEICT 2024: Selected Papers
Edition
1
Pages from
212
Pages to
217
Pages count
6
URL
BibTex
@inproceedings{BUT188512,
author="Dominik {Řičánek}",
title="Amplitude measurement of small displacement using video magnification",
booktitle="Proceedings I of the 30th Conference STUDENT EEICT 2024: Selected Papers",
year="2024",
series="1",
pages="6",
publisher="Brno University of Technology, Faculty of Electrical Engineering and Communication",
address="Brno",
doi="10.13164/eeict.2024.212",
isbn="978-80-214-6230-4",
url="https://www.eeict.cz/eeict_download/archiv/sborniky/EEICT_2024_sbornik_2.pdf"
}