Share Email Print
cover

Proceedings Paper • new

High dynamic range 3D shape measurement based on multispectral imaging
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

High-speed and high-accuracy three-dimensional (3D) measurement plays an important role in numerous areas. The recent proposed binary defocusing techniques have enabled the speed breakthrough by utilizing 1-bit binary fringe patterns with the advanced digital light processing (DLP) projection platform. To enhance the phase quality and measurement accuracy, extensive research has also been conducted to modulate and optimize the binary patterns spatially or temporally. However, it remains challenging for such techniques to measure objects with high dynamic range (HDR) of surface reflectivity. Therefore, to overcome this problem, this paper proposes a novel HDR 3D measurement method based on spectral modulation and multispectral imaging. By modulating the illumination light and acquiring the fringe patterns with a multispectral camera, high-contrast HDR fringe imaging and 3D measurement can be achieved. Experiments were carried out to demonstrate the effectiveness of the proposed strategy.

Paper Details

Date Published: 13 May 2019
PDF: 8 pages
Proc. SPIE 10991, Dimensional Optical Metrology and Inspection for Practical Applications VIII, 109910M (13 May 2019); doi: 10.1117/12.2518784
Show Author Affiliations
Yajun Wang, Wuhan Univ. (China)
Yi Zheng, Iowa State Univ. of Science and Technology (United States)
Vignesh Suresh, Iowa State Univ. of Science and Technology (United States)
Beiwen Li, Iowa State Univ. of Science and Technology (United States)


Published in SPIE Proceedings Vol. 10991:
Dimensional Optical Metrology and Inspection for Practical Applications VIII
Kevin G. Harding; Song Zhang, Editor(s)

© SPIE. Terms of Use
Back to Top