J
José A. Ferrari
Researcher at University of the Republic
Publications - 133
Citations - 1454
José A. Ferrari is an academic researcher from University of the Republic. The author has contributed to research in topics: Interferometry & Image processing. The author has an hindex of 19, co-authored 132 publications receiving 1297 citations. Previous affiliations of José A. Ferrari include Simón Bolívar University.
Papers
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Pulse-width modulation in defocused three-dimensional fringe projection.
TL;DR: This work presents a sinusoidal fringe generation technique that utilizes slightly defocused binary fringe projection, a spatial version of the well-known pulse-width modulation (PWM) technique of electrical engineering that allows it to overcome the gamma problem in the output light intensity.
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Diffracted field by an arbitrary aperture
Alfredo Dubra,José A. Ferrari +1 more
TL;DR: In this paper, the 2D integration is reduced to a 1D parametric integration over the perimeter of the aperture, similar to the Rubinowicz representation of the Kirchhoff diffraction integral.
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Color-fringe pattern profilometry using a generalized phase-shifting algorithm.
TL;DR: The simulations and experimental results show that the proposed generalized phase-shifting algorithm with arbitrary phase-shift values can significantly reduce the influence of the color crosstalk.
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Single-element interferometer
José A. Ferrari,Erna Frins +1 more
TL;DR: In this article, a beam-splitter cube is used to produce two interferograms with a relative phase shift of π (rad) for spatial-carrier interferometry and flexible writing of fiber Bragg gratings.
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Reconstruction of perspective shifts and refocusing of a three-dimensional scene from a multi-focus image stack
TL;DR: This work proposes a method for post-capture perspective shift reconstruction (in the x, y, and z directions) of a three-dimensional scene as well as refocusing with apertures of arbitrary shapes and sizes from an optimal multi-focus image stack.