Distorted pinhole camera modeling and calibration

R Juarez-Salazar, J Zheng, VH Diaz-Ramirez - Applied Optics, 2020 - opg.optica.org
Camera modeling and calibration are essential tasks in modern optics. Conventionally, the
pinhole model is adopted with a further extension for lens distortion. However, pinhole and …

Camera calibration using synthetic random speckle pattern and digital image correlation

B Chen, B Pan - Optics and Lasers in Engineering, 2020 - Elsevier
Accurate camera calibration is of fundamental importance to various vision-based 3D
metrological techniques. Despite camera calibration methods using regular planar …

[HTML][HTML] Three‐dimensional spatial point computation in fringe projection profilometry

R Juarez-Salazar, GA Rodriguez-Reveles… - Optics and Lasers in …, 2023 - Elsevier
The demodulated phase in fringe projection profilometry (FPP) provides information about
the (x, y, z)-coordinates of points of the observed object. However, the phase-to-coordinate …

Iterative calibration method for measurement system having lens distortions in fringe projection profilometry

S **ng, H Guo - Optics Express, 2020 - opg.optica.org
In fringe projection profilometry, system calibration is crucial for guaranteeing the
measurement accuracies. Its difficulty lies in calibrating projector parameters, especially …

Flexible camera-projector calibration using superposed color checkerboards

R Juarez-Salazar, VH Diaz-Ramirez - Optics and Lasers in Engineering, 2019 - Elsevier
Camera-projector calibration is essential in structured-light systems for three-dimensional
imaging. A prevalent difficulty for calibration is that two different checkerboards must be …

Key concepts for phase-to-coordinate conversion in fringe projection systems

R Juarez-Salazar, A Giron, J Zheng… - Applied optics, 2019 - opg.optica.org
Fringe projection systems encode the scanned object shape as a phase distribution
according to the system parameters. However, to obtain the object shape in physical units of …

Are camera, projector, and camera–projector calibrations different?

R Juarez-Salazar, S Esquivel-Hernandez… - Applied Optics, 2023 - opg.optica.org
Structured light projection systems have become a referent in three-dimensional optical
metrology. Calibration of the cameras and projectors of these systems is one of the most …

Flat mirrors, virtual rear-view cameras, and camera-mirror calibration

R Juarez-Salazar - Optik, 2024 - Elsevier
Flat mirrors are useful to generate virtual cameras and capture a scene from multiple
viewpoints. However, the resultant camera-mirror setup is cumbersome to calibrate because …

[HTML][HTML] Reliable Disparity Estimation Using Multiocular Vision with Adjustable Baseline

VH Diaz-Ramirez, M Gonzalez-Ruiz, R Juarez-Salazar… - Sensors, 2024 - mdpi.com
Accurate estimation of three-dimensional (3D) information from captured images is essential
in numerous computer vision applications. Although binocular stereo vision has been …

Stereo-phase rectification for metric profilometry with two calibrated cameras and one uncalibrated projector

R Juarez-Salazar, OI Rios-Orellana… - Applied Optics, 2022 - opg.optica.org
F<? TeX 2pc 0pt?> ringe projection profilometry requires calibrating both cameras and
projectors for metric measurements. Cameras are relatively simple to calibrate, but …