Home / Journals / Physics / Optics / Article
Full-Field Displacement Measurement Technique by Using Repeated Patterns and JPEG Compressed Images
Optics
Volume 4, Issue 3-1, June 2015, Pages: 9-13
Received: Mar. 27, 2015; Accepted: Jun. 26, 2015; Published: Jul. 6, 2015
Views 3062      Downloads 107
Authors
Shien Ri, Research Institute of Instrumentation Frontier, National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan
Satoshi Hayashi, Research Institute of Instrumentation Frontier, National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan; Department of Mechanical Engineering, Tokyo University of Science, Chiba, Japan
Hiroshi Tsuda, Research Institute of Instrumentation Frontier, National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan
Shinji Ogihara, Department of Mechanical Engineering, Tokyo University of Science, Chiba, Japan
Article Tools
Follow on us
Abstract
This paper presents an experimental technique for measuring displacement distribution from an image of repeated patterns and JPEG compressed images. The measurement accuracy of the developed method is insusceptible to the degree of JPEG compression because only lower spatial frequency components of the repeated pattern are used to calculate the displacement distribution, and high spatial frequency components have high priority to cut-off according to the JPEG compression algorithm. The insensitivity to the JPEG compression was confirmed by a displacement measurement using JPEG images of various compression ratios or image qualities. We found that by using the highest quality JPEG image, the accuracy of displacement measurement could research 1/1000 of the repeated pattern pitch, as same the uncompressed BMP images. In addition, displacement with accuracy of 1/500 pitch could be measured from a compressed JPEG image of which the file size was 1/50 of that of the BMP image. This technique is useful for measurement using a high-speed camera with high-resolution digital images for a long-term or wireless image transfer.
Keywords
Deformation Measurement, Sampling Moiré Method, Repeated Pattern, Compressed image, Phase Analysis
To cite this article
Shien Ri, Satoshi Hayashi, Hiroshi Tsuda, Shinji Ogihara, Full-Field Displacement Measurement Technique by Using Repeated Patterns and JPEG Compressed Images, Optics. Special Issue: Optical Techniques for Deformation, Structure and Shape Evaluation. Vol. 4, No. 3-1, 2015, pp. 9-13. doi: 10.11648/j.optics.s.2015040301.13
References
[1]
H. Nassif, M. Gindy, and J. Davis, “Comparison of laser Doppler vibrometer with contact sensors for monitoring bridge deflection and vibration,” NDT & E International, 2005, pp. 213–218.
[2]
A. M. Wahbeh, J. Caffrey, and S. Masri, “A vision-based approach for the direct measurement of displacements in vibrating systems,” Smart Mater. Struct. Vol. 12, 2003, pp. 785–794.
[3]
J. Lee, and M. Shinozuka, “A vision-based system for remote sensing of bridge displacement,” NDT&E International, Vol. 39, 2006, pp. 425–432.
[4]
B. Pan, K. Qian, H. Xie, and A. Asundi, “Two-dimensional digital image correlation for in-plane displacement and strain measurement: a review,” Vol. 20, 2009, pp. 062001.
[5]
M. A. Sutton, J. L. Turner, H. A. Bruck, and T. A. Chao, “Full-field representation of discretely sampled surface deformation for displacement and train analysis”, Experimental Mechanics, Vol. 31, 1991, pp. 168–177.
[6]
S. Yoneyama, and Y. Morimoto, “Accurate displacement measurement by correlation of colored random patterns,” JSME International Journal (Series A), Vol. 46, 2003, pp. 178–184.
[7]
P. Ifju, B. Han, “Recent applications of moiré interferometry,” Experimental Mechanics, Vol. 50, 2010, pp. 1129–1147.
[8]
S. Kishimoto, Y. Tanaka, K. Naito, and Y. Kagawa, “Measurement of strain distribution of composite materials by electron moiré method,” Nanocomposites with Unique Properties and Applications in Medicine and Industry, Dr. John Cuppoletti (Ed.), Chapter 11, InTech.
[9]
Q. Wang, and S. Kishimoto, “Simultaneous analysis of residual stress and stress intensity factor in a resist after UV-nanoimprint lithography based on electron moiré fringes,” J. Micromech. Microeng. Vol. 22, 2012, 105012 (7pp).
[10]
S. Ri, S. Hayashi, S. Ogihara, and H. Tsuda “Accurate full-field optical displacement measurement technique using a digital camera and repeated patterns,” Optics Express, Vol. 22, 2014, pp. 9693–9706.
[11]
S. Ri, M. Fujigaki, and Y. Morimoto, “Sampling moiré method for accurate small deformation distribution measurement,” Experimental Mechanics, Vol. 50, 2010, pp. 501–508.
[12]
S. Ri, T. Muramatsu, M. Saka, K. Nanbara, and D. Kobayashi, “Accuracy of the sampling moiré method and its application to deflection measurement s of large-scale structures,” Experimental Mechanics, Vol. 52, 2012, pp. 331–340.
[13]
S. Ri, M. Saka, K. Nanbara, and D. Kobayashi, “Dynamic thermal deformation measurement of large-scale, high-temperature piping in thermal power plants utilizing the sampling moiré method and grating magnets,” Experimental Mechanics, Vol. 53, 2013, pp. 1635–1646.
[14]
W. B. Pennebaker, and J. L. Mitchellm, “JPEG Still Image Data Compression Standard,” New York, 1993.
ADDRESS
Science Publishing Group
1 Rockefeller Plaza,
10th and 11th Floors,
New York, NY 10020
U.S.A.
Tel: (001)347-983-5186