New fast high-resolution 3D imaging system with color structured light

Yuan-Hao Yeh; I-Cheng Chang; Ching-Long Huang; Wen-Jean Hsueh; Hsien-Chang Lin; Chia-Chen Chen

doi:10.1117/12.481565

30 August 2002 New fast high-resolution 3D imaging system with color structured light

Yuan-Hao Yeh, I-Cheng Chang, Ching-Long Huang, Wen-Jean Hsueh, Hsien-Chang Lin, Chia-Chen Chen

Proceedings Volume 4925, Electronic Imaging and Multimedia Technology III; (2002) https://doi.org/10.1117/12.481565
Event: Photonics Asia, 2002, Shanghai, China

Abstract

This paper proposes a new fast and high-resolution color structured-light-based 3D imaging system. Unlike the expensive laser-based 3D imaging system, our hand-held system contains a commercial digital camera and two special designed projectors, the cost is much lower. Only two images are necessarily to reconstruct the 3D model with textures. One projector illuminates white light for texture imaging, the other projector projects special designed pattern for 3D information imaging. 384 vertical color bars (comprised of six primary colors) with special coding are projected onto the target, our proposed algorithm detects edges between any two successive color bars. From decoding algorithm the correct locations of edges are derived. Then the calibration algorithm finds accurate positions of edges in 3D space with triangulation. Color bars can be seriously distorted by colorful objects. Edges and colors of the object may cause edges of color bars to be broken segments. And some bars even show very different colors. A curve reconstruction algorithm is developed to reconstruct the complete edge from residual edge segments. And a robust color decoding algorithm can recover the correct color sequence even when many color bars are seriously distorted. The suggested approach has been implemented and the preliminary results show the resolution can compete with laser 3D imaging systems and -0.2~+0.2 mm accuracy is achieved.

Citation Download Citation

Yuan-Hao Yeh, I-Cheng Chang, Ching-Long Huang, Wen-Jean Hsueh, Hsien-Chang Lin, and Chia-Chen Chen "New fast high-resolution 3D imaging system with color structured light", Proc. SPIE 4925, Electronic Imaging and Multimedia Technology III, (30 August 2002); https://doi.org/10.1117/12.481565

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