Structured light field 3D imaging.
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TLDR
This paper analyzed and derived the phase-depth mapping in the structured light field and then proposed a flexible ray-based calibration approach to determine the independent mapping coefficients for each ray.Abstract:
In this paper, we propose a method by means of light field imaging under structured illumination to deal with high dynamic range 3D imaging. Fringe patterns are projected onto a scene and modulated by the scene depth then a structured light field is detected using light field recording devices. The structured light field contains information about ray direction and phase-encoded depth, via which the scene depth can be estimated from different directions. The multidirectional depth estimation can achieve high dynamic 3D imaging effectively. We analyzed and derived the phase-depth mapping in the structured light field and then proposed a flexible ray-based calibration approach to determine the independent mapping coefficients for each ray. Experimental results demonstrated the validity of the proposed method to perform high-quality 3D imaging for highly and lowly reflective surfaces.read more
Citations
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Status, challenges, and future perspectives of fringe projection profilometry
Jing Xu,Song Zhang +1 more
TL;DR: The current status of FPP techniques, the major challenges still facing in the field, and the perspectives on the future of F PP techniques are presented.
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High dynamic range 3D measurements with fringe projection profilometry: a review
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State-of-the-art active optical techniques for three-dimensional surface metrology: a review [Invited].
TL;DR: This paper reviews recent developments of non-contact three-dimensional (3D) surface metrology using an active structured optical probe and discusses principles of each technology, and its advantageous characteristics as well as limitations.
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Calibration of fringe projection profilometry: A comparative review
TL;DR: A review of some of the most used calibration methods for fringe projection profilometry, where both quantitative and qualitative comparative experiments are implemented to show the advantages and constraints of each method.
Journal ArticleDOI
High-speed 3D shape measurement using the optimized composite fringe patterns and stereo-assisted structured light system.
TL;DR: A high-speed 3D shape measurement technique based on the optimized composite fringe patterns and stereo-assisted structured light system that allows to effectively recover an accurate, unambiguous, and distortion-free 3D point cloud with only 4 projected patterns.
References
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Journal ArticleDOI
Fringe projection techniques: Whither we are?
Sai Siva Gorthi,Pramod Rastogi +1 more
TL;DR: This paper presents a meta-analyses of Fourier-Transform Profilometry and its applications in 3-D Shape Measurement and Surface Profile Measurement for Structured Light Pattern and 4-Core Optical-Fiber.
Journal ArticleDOI
Automated phase-measuring profilometry of 3-D diffuse objects
TL;DR: The high resolution surface profile of a 3-D diffuse object is obtained by measurement of the phase distribution across the image of a projected sinusoidal grating deformed by the surface, based on phase-shifting interferometric techniques.
Journal ArticleDOI
Scene reconstruction from high spatio-angular resolution light fields
TL;DR: This paper proposes an algorithm that leverages coherence in massive light fields by breaking with a number of established practices in image-based reconstruction, and introduces a sparse representation and a propagation scheme for reliable depth estimates which make the algorithm particularly effective for 3D input.
Journal ArticleDOI
The Light Field Camera: Extended Depth of Field, Aliasing, and Superresolution
Tom E. Bishop,Paolo Favaro +1 more
TL;DR: This work addresses traditional multiview stereo methods to the extracted low-resolution views can result in reconstruction errors due to aliasing, and incorporates Lambertian and texture preserving priors to reconstruct both scene depth and its superresolved texture in a variational Bayesian framework.
Journal ArticleDOI
Reliability-guided phase unwrapping algorithm: a review ☆
Xianyu Su,Wenjing Chen +1 more
TL;DR: A phase unwrapping algorithm based on the reliability-guided parameter map is reviewed, which shows that in the worse case the error is limited, if there is any, to local minimum areas.
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