Abstract
Digital fringe projection method is a noncontact surface profiling technique. For accurate measurement, phase-shifting technique is usually adopted. However, the specimen may be moved during the time of image capture, and not suitable for dynamic measurement. In order to overcome this drawback, a digital fringe projection system consisting a color projector, a color CCD camera, and a PC is proposed. The phase shift is introduced between two computer-generated fringe patterns with different colors, which is projected onto the object to be measured simultaneously. The projected fringe patterns are captured by the color CCD camera and separated and processed by a two-step fringe analysis scheme using spiral phase transform and optical flow techniques. The proposed system was applied to a real specimen. The test results are reported.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Du, H., Zhao, H., Li, B.: Fast phase shifting shadow moiré by utilizing multiple light sources. In: SPIE Advanced Lithography (2013)
Cheng, F.-Y., Chen, T.Y.-F., Lee, C.-C., Lin, M.-T.: Real-time shadow Moiré measurement by two light sources. Adv. Opt. Methods Digit. Image Correl. Exp. Mech. 3, 101–103 (2019)
Acknowledgments
The authors gratefully acknowledge the financial support provided to this study by the Ministry of Science and Technology of Taiwan under Grant No. MOST 108-2221-E-006 -106 -181.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2024 The Society for Experimental Mechanics, Inc.
About this paper
Cite this paper
Chen, T.YF., Huang, JY., Huang, BW. (2024). Two-Step Fringe Analysis for Fringe Projection Profile Measurement. In: Furlong, C., Hwang, CH., Shaw, G., Berke, R., Pataky, G., Hutchens, S. (eds) Advancement of Optical Methods and Fracture and Fatigue, Volume 3. SEM 2023. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-031-50499-0_5
Download citation
DOI: https://doi.org/10.1007/978-3-031-50499-0_5
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-031-50498-3
Online ISBN: 978-3-031-50499-0
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)