Jose A Ferrari
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Explore the profile of Jose A Ferrari including associated specialties, affiliations and a list of published articles.
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Recent Articles
11.
Perciante C, Aparicio S, Illa R, Ferrari J
Appl Opt
. 2015 Jul;
54(18):5708-14.
PMID: 26193019
We demonstrate the compensation of bending-induced linear birefringence in single-mode fibers coiled in a nonplanar path by alternating orthogonal bending planes. This effect can be applied for the construction of...
12.
Perciante C, Strojnik M, Paez G, Di Martino J, Ayubi G, Flores J, et al.
Appl Opt
. 2015 May;
54(10):3018-23.
PMID: 25967217
Phase unwrapping is probably the most challenging step in the phase retrieval process in phase-shifting and spatial-carrier interferometry. Likewise, phase unwrapping is required in 3D-shape profiling and deflectometry. In this...
13.
Alonso J, Fernandez A, Ayubi G, Ferrari J
Opt Lett
. 2015 Apr;
40(8):1671-4.
PMID: 25872044
Limited depth-of-focus is a problem in many fields of optics, e.g., microscopy and macro-photography. We propose a new physically based method with a space variant point spread function (PSF) to...
14.
Ayubi G, Perciante C, Flores J, Di Martino J, Ferrari J
Appl Opt
. 2014 Nov;
53(30):7168-76.
PMID: 25402808
Phase-shifting (PS) is an important technique for phase retrieval in interferometry (and three-dimensional profiling by fringe projection) that requires a series of intensity measurements with known phase-steps. Usual PS algorithms...
15.
Di Martino J, Flores J, Pfeiffer F, Scherer K, Ayubi G, Ferrari J
Opt Lett
. 2013 Dec;
38(22):4813-6.
PMID: 24322139
Phase objects can be characterized using well-known methods such as shear interferometry and deflectometry, which provide information on the partial derivatives of the phase. It is often believed that for...
16.
Flores J, Bravo-Medina B, Ferrari J
Appl Opt
. 2013 Oct;
52(26):6537-42.
PMID: 24085130
Deflectometry is a well-known method to characterize pure phase objects by measuring the deformation of fringes. In principle, the retrieved magnitude is the partial derivative of the phase along the...
17.
Ferrari J, Ayubi G
Opt Express
. 2013 Aug;
21(16):19187.
PMID: 23938834
We comment on a recent paper by Kim et al. [Opt. Exp. 20(6) 6737-6745 (2012)], in which the authors claimed to present a new method for first-order differentiation of phase...
18.
Flores J, Torales G, Ferrari J, Ayubi G, Castillo O, Di Martino M
Appl Opt
. 2013 Jun;
52(15):3576-82.
PMID: 23736243
We present a method for synthesizing triangular intensity fringes as a way to solve the problems caused by projector/camera gamma nonlinearity in triangular-pattern phase-shifting profilometry. The fringe generation technique consists...
19.
Di Martino J, Flores J, Ayubi G, Alonso J, Fernandez A, Ferrari J
Appl Opt
. 2012 Jun;
51(16):3439-44.
PMID: 22695581
A method for orientation-selective enhancement of edges in color images is proposed. The method utilizes the capacity of digital micromirror devices to generate a positive and a negative color replica...
20.
Ayubi G, Di Martino J, Alonso J, Fernandez A, Flores J, Ferrari J
Opt Lett
. 2012 Apr;
37(8):1325-7.
PMID: 22513674
Three-dimensional profiling by sinusoidal fringe projection using PSI-algorithms are distorted by the nonlinear response of digital cameras and commercial video projectors. To solve the problem, we present a fringe generation...