Results 31 to 40 of about 355 (113)

Skin color correction via convolutional neural networks in 3D fringe projection profilometry [PDF]

open access: yes, 2023
Fringe Projection Profilometry (FPP) with Digital Light Projector technology is one of the most reliable 3D sensing techniques for biomedical applications.
Barrios, Erik   +4 more
core   +1 more source

Invalid point removal method based on error energy function in fringe projection profilometry

open access: yesResults in Physics, 2022
Invalid points, such as shadow and background, in the captured fringe patterns of fringe projection profilometry (FPP) are often inevitable due to the limited field of view measurements of three-dimensional (3D) imaging equipment.
Kaifeng Zhu   +7 more
doaj   +1 more source

Developing a Robust Acquisition System for Fringe Projection Profilometry [PDF]

open access: yes, 2019
Since Fringe Projection Profilometry (FPP) is an intensity-based coding strategy, it is prone to improper optical setup arrangement, surface texture and reflectance, uneven illumination distribution, among others.
Marrugo A.G., Pineda J., Romero L.A.
core   +1 more source

The height variance range for one frequency fringe pattern profilometry [PDF]

open access: yes, 2010
The upper limit on the deepest step of the surface shape that can be accurately determined is an important performance measure associated with the fringe projection profilometry.
Cheng, Wenqing   +4 more
core   +4 more sources

Fourier Transform Profilometry in LabVIEW [PDF]

open access: yes, 2018
Fourier transform profilometry (FTP) is an established non-contact method for 3D sensing in many scientific and industrial applications, such as quality control and biomedical imaging.
Marrugo, Andrés G.   +4 more
core   +1 more source

Deep Learning-enabled Spatial Phase Unwrapping for 3D Measurement

open access: yes, 2022
In terms of 3D imaging speed and system cost, the single-camera system projecting single-frequency patterns is the ideal option among all proposed Fringe Projection Profilometry (FPP) systems.
Bai, Songlin   +4 more
core   +1 more source

Untrained deep learning-based fringe projection profilometry

open access: yesAPL Photonics, 2022
Deep learning-based fringe projection profilometry (FPP) shows potential for challenging three-dimensional (3D) reconstruction of objects with dynamic motion, complex surface, and extreme environment. However, the previous deep learning-based methods are
Haotian Yu   +4 more
doaj   +1 more source

A fringe projection profilometry scheme based on embedded speckle patterns and robust principal component analysis [PDF]

open access: yes, 2019
2019 SPIE. Phase unwrapping is one of the key steps for fringe projection profilometry (FPP)-based 3D shape measurements. Conventional spatial phase unwrapping schemes are sensitive to noise and discontinuities, which may suffer from low accuracies ...
Duan, Chengpu   +6 more
core   +2 more sources

Self-supervised phase unwrapping in fringe projection profilometry

open access: yes, 2023
Fast-speed and high-accuracy three-dimensional (3D) shape measurement has been the goal all along in fringe projection profilometry (FPP). The dual-frequency temporal phase unwrapping method (DF-TPU) is one of the prominent technologies to achieve this ...
Gao, Xiaomin   +3 more
core   +1 more source

Métodos de calibración cámara-proyector con compensación de distorsiones geométricas en perfilometría por proyección de franjas: Un estudio comparativo [PDF]

open access: yes, 2018
The calibration methods most used in fringe projection profilometry are based on models of least squares adjustment and stereo vision techniques. However, the geometric distortions of the projector and camera lenses introduce imprecision in certain ...
Marrugo, A.G.   +4 more
core   +1 more source

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