Three-Dimensional Vibration Visual Measurement Method Based on Binocular Camera

Abstract

This paper proposes a three-dimensional micro-vibration measurement method based on amplification and tracking to achieve vibration measurement of the target. In environments with excessive lighting, which can hinder effective target tracking, the method first applies a magnification algorithm to enlarge the target image. The enlarged image is then processed using a stereo matching algorithm to align the left and right camera views. Following this, a tracking algorithm calculates the pixel displacement of the target. Finally, the target's spatial three-dimensional vibration information is derived through dimensional conversion. To address challenges posed by excessive illumination, image preprocessing is applied to extract the target before magnification. Experimental results from three sets of tests demonstrate the method’s high accuracy. When measuring spatial three-dimensional vibration with an amplitude of 0.1 mm, the displacement's root mean square error is 0.0298 mm, and the normalized root mean square error is 11.57%. This new three-dimensional visual measurement method effectively and accurately measures micro-vibration amplitudes.

Received: 23 October 2024 | Revised: 8 January 2025 | Accepted: 11 February 2025

Conflicts of Interest

The authors declare that they have no conflicts of interest to this work.

Data Availability Statement

Data sharing is not applicable to this article as no new data were created or analyzed in this study.

Author Contribution Statement

Liangjun Luo: Conceptualization, Software, Validation, Investigation, Writing - original draft, Writing - review & editing. Shuo Liu: Methodology, Validation, Formal analysis, Investigation, Writing - original draft, Writing - review & editing, Visualization, Project administration. Fei Li: Conceptualization, Methodology, Formal analysis, Data curation, Writing - review & editing. Wenhao Zou: Methodology, Software, Formal analysis, Data curation, Writing - review & editing, Visualization. Xi Wang: Conceptualization, Supervision, Funding acquisition. Tao Wang: Resources. Guoqiang Fu: Resources. Caijiang Lu: Resources.