Measuring frequency of one-dimensional vibration with video camera using electronic rolling shutter

Yipeng Zhao; Jinyue Liu; Shijie Guo; Tiejun Li

doi:10.1117/1.OE.57.4.043104

12 April 2018 Measuring frequency of one-dimensional vibration with video camera using electronic rolling shutter

Yipeng Zhao, Jinyue Liu, Shijie Guo, Tiejun Li

Author Affiliations +

Optical Engineering, Vol. 57, Issue 4, 043104 (April 2018). https://doi.org/10.1117/1.OE.57.4.043104

Abstract

Cameras offer a unique capability of collecting high density spatial data from a distant scene of interest. They can be employed as remote monitoring or inspection sensors to measure vibrating objects because of their commonplace availability, simplicity, and potentially low cost. A defect of vibrating measurement with the camera is to process the massive data generated by camera. In order to reduce the data collected from the camera, the camera using electronic rolling shutter (ERS) is applied to measure the frequency of one-dimensional vibration, whose frequency is much higher than the speed of the camera. Every row in the image captured by the ERS camera records the vibrating displacement at different times. Those displacements that form the vibration could be extracted by local analysis with sliding windows. This methodology is demonstrated on vibrating structures, a cantilever beam, and an air compressor to identify the validity of the proposed algorithm. Suggestions for applications of this methodology and challenges in real-world implementation are given at last.

Citation Download Citation

Yipeng Zhao, Jinyue Liu, Shijie Guo, and Tiejun Li "Measuring frequency of one-dimensional vibration with video camera using electronic rolling shutter," Optical Engineering 57(4), 043104 (12 April 2018). https://doi.org/10.1117/1.OE.57.4.043104

Received: 13 December 2017; Accepted: 27 March 2018; Published: 12 April 2018

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