Development of a Point Tracking System for Measuring Structural Deformations Using Commercial Video Cameras

Title & Authors
Development of a Point Tracking System for Measuring Structural Deformations Using Commercial Video Cameras
Kim, Hong-Il; Kim, Ho-Young; Park, Hyun-Jin; Han, Jae-Hung; Kim, Jun-Bum; Kim, Do-Hyung; Han, Jeong-Ho;

Abstract
This paper deals with the creation of a new, low-cost point/position tracking system that can measure deformations in engineering structures with simple commercially widespread cameras. Though point tracking systems do exist today, such as Stereo Pattern Recognition (SPR) and Projection Moir$\small{\acute{e}}$ Interferometry (PMI) systems, they are far too costly to use to analyze small, simple structures because complex optical components such as large flashes, high-resolution cameras and data acquisition systems with several computers are required. We developed a point tracking system using commercial cameras. This system used IR LEDs and commercial IR CCD cameras to minimize the interference posed by other extraneous light sources. The main algorithm used for this system is an optical point tracking algorithm, which is composed of the point extraction algorithm and the point matching algorithm for 3-D motion estimation. a series of verification tests were performed. Then, the developed point tracking system was applied to measure deformations of an acrylic plate under a mechanical load. The measured deformations of the acrylic plate matched well with the numerical analysis results. The results indicate that the developed point tracking system is reliable enough to measure continuous deformed shapes of various engineering structures.
Keywords
3-D position estimation algorithm;Specific point extraction algorithm;SPR(Stereo Pattern Recognition);Commercial cameras;
Language
English
Cited by
1.
탄소/현무암 섬유강화 하이브리드 복합재료의 성형과 기계적 특성 평가,이진우;김윤해;정민교;윤성원;박준무;

Composites Research, 2014. vol.27. 1, pp.14-18
2.
Performance evaluation method of homogeneous stereo camera system for full-field structural deformation estimation,;;;;;

International Journal of Aeronautical and Space Sciences, 2015. vol.16. 3, pp.380-393
3.
스테레오 영상을 이용한 비행 중인 항공기 날개의 변위 및 진동 측정,김호영;윤종민;한재흥;권혁준;

한국소음진동공학회논문집, 2015. vol.25. 8, pp.568-574
1.
Performance evaluation method of homogeneous stereo camera system for full-field structural deformation estimation, International Journal of Aeronautical and Space Sciences, 2015, 16, 3, 380
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