Pixel-wise rational model for a structured light system

Article Optics

A novel projector ray-model for 3D measurement in fringe projection profilometry

Yang Yang et al.

Summary: This study presents a solution to the problem of geometric calibration in fringe projection profilometry by using a ray-model method to parameterize the distribution of projector illumination and designing a flexible calibration strategy to significantly suppress errors associated with the projector's luminance nonlinearity.

OPTICS AND LASERS IN ENGINEERING (2022)

Add to Collection

Article Optics

Intrinsic parameter-free calibration of FPP using a ray phase mapping model

Yang Yang et al.

Summary: This paper presents a ray phase mapping model (RPM) for fringe projection profilometry (FPP) that avoids calibrating intrinsic parameters. The RPM characterizes the imaging system with independent rays for each pixel, associating the rays with the projected phase for efficient 3D mapping, and avoids complex imaging-specific modeling. The method has the potential to calibrate different types of FPP systems with high accuracy.

OPTICS LETTERS (2022)

Add to Collection

Article Optics

Hybrid calibration procedure for structured light field system

Shuo Peng et al.

Summary: A structured light field system combines fringe projection profilometry and light field imaging technology to provide more information dimensions and improve the robustness and dynamic range of 3D measurement. System calibration is crucial, and the proposed hybrid calibration approach combines the flexibility of stereo vision with the high precision characteristics of phase-coordinate mapping.

OPTICS AND LASERS IN ENGINEERING (2022)

Add to Collection

Review Optics

Calibration of fringe projection profilometry: A comparative review

Shijie Feng et al.

Summary: In this work, a review of some of the most commonly used calibration methods in fringe projection profilometry is presented. The study covers basic principles, advantages, limitations, and factors affecting the performance of calibration methods. Quantitative and qualitative comparative experiments are used to showcase the advantages and suitability of each method.

OPTICS AND LASERS IN ENGINEERING (2021)

Add to Collection

Article Optics