Non-Invasive Qualitative Vibration Analysis using Event Camera

TL;DR

This paper explores the use of event-based vision sensors for non-invasive qualitative vibration analysis, focusing on frequency measurement and motion magnification, highlighting their potential and current challenges.

Contribution

It demonstrates the application of event cameras for real-time vibration frequency measurement and discusses the challenges in motion magnification with stationary cameras.

Findings

Event cameras show promise for real-time structural assessment.

Motion magnification faces challenges with stationary cameras.

Frequency measurement is feasible with event-based sensors.

Abstract

This technical report investigates the application of event-based vision sensors in non-invasive qualitative vibration analysis, with a particular focus on frequency measurement and motion magnification. Event cameras, with their high temporal resolution and dynamic range, offer promising capabilities for real-time structural assessment and subtle motion analysis. Our study employs cutting-edge event-based vision techniques to explore real-world scenarios in frequency measurement in vibrational analysis and intensity reconstruction for motion magnification. In the former, event-based sensors demonstrated significant potential for real-time structural assessment. However, our work in motion magnification revealed considerable challenges, particularly in scenarios involving stationary cameras and isolated motion.