Real-time image processing for non-contact monitoring of dynamic displacements using smartphone technologies

Jae-Hong Min; Nikolas J. Gelo; Hongki Jo

doi:10.1117/12.2219418

20 April 2016 Real-time image processing for non-contact monitoring of dynamic displacements using smartphone technologies

Jae-Hong Min, Nikolas J. Gelo, Hongki Jo

Author Affiliations +

Proceedings Volume 9803, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016; 98031B (2016) https://doi.org/10.1117/12.2219418
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2016, Las Vegas, Nevada, United States

Abstract

The newly developed smartphone application, named RINO, in this study allows measuring absolute dynamic displacements and processing them in real time using state-of-the-art smartphone technologies, such as high-performance graphics processing unit (GPU), in addition to already powerful CPU and memories, embedded high-speed/ resolution camera, and open-source computer vision libraries. A carefully designed color-patterned target and user-adjustable crop filter enable accurate and fast image processing, allowing up to 240fps for complete displacement calculation and real-time display. The performances of the developed smartphone application are experimentally validated, showing comparable accuracy with those of conventional laser displacement sensor.

Citation Download Citation

Jae-Hong Min, Nikolas J. Gelo, and Hongki Jo "Real-time image processing for non-contact monitoring of dynamic displacements using smartphone technologies", Proc. SPIE 9803, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016, 98031B (20 April 2016); https://doi.org/10.1117/12.2219418

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