Zobrazeno 1 - 10
of 13
pro vyhledávání: '"J. A. Arriaga-Hernández"'
Autor:
J. A. Arriaga-Hernández, Alberto Jaramillo-Núñez, M. Pérez-Meza, B. E. Sánchez-Rinza, B. Cuevas-Otahola
The aim of this paper is to show a technique to speed up the interpretation of bone scans in order to determine the presence of early bone metastasis. This is done using the gray levels histogram of the region of interest. The technique is intended t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3a95aa1dca9985e9c54db68c79ed628
https://doi.org/10.17488/rmib.42.2.1
https://doi.org/10.17488/rmib.42.2.1
Publikováno v:
OSA Optical Sensors and Sensing Congress 2021 (AIS, FTS, HISE, SENSORS, ES).
We obtain 3D profiles of objects in optical traps from image segmentation, giving place to an irradiance distribution. We recover the phase using 2D Legendre poly- nomials (2D-LP) and compare our technique with the Gerchberg-Saxton method.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28dcc373de2c1eeea1ca85bd5a9e6976
https://doi.org/10.1364/ais.2021.jw2a.10
https://doi.org/10.1364/ais.2021.jw2a.10
Autor:
A. Jaramillo Núñez, B. T. Cuevas Otahola, J. A. Arriaga Hernández, M. Morín Castillo, J. Oliveros Oliveros
Publikováno v:
Applied optics. 59(33)
We introduce a technique for obtaining three-dimensional (3D) profiles of objects captured in two-dimensional (2D) flat images (FI). This technique performs a numerical approximation of the object’s topography from their image gray tones, analyzing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0366efc56f1e27bcbce6e0230af0bed5
https://pubmed.ncbi.nlm.nih.gov/33361980
https://pubmed.ncbi.nlm.nih.gov/33361980
Publikováno v:
Imaging and Applied Optics Congress.
The Irradiance Transport Equation is considered as an elliptical differential equation that determines the phase as a poorly stated problem. The instability of such a problem is handled as Tikhonov regularization method to determine aberrations.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::320639264edfc50c23cd2c47e10e90e8
https://doi.org/10.1364/3d.2020.jth2a.38
https://doi.org/10.1364/3d.2020.jth2a.38
Publikováno v:
Journal of Optics. 23:125401
We are focused on the phase retrieval and 3D profiles of microparticles (MP), analyzed in optical trapping. To this aim, we use several image segmentation procedures of MP from an optical trapping video. Moreover, we implement different procedures to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::96956fa69c412efeff3ac831e773b750
https://doi.org/10.1088/2040-8986/ac303c
https://doi.org/10.1088/2040-8986/ac303c
Publikováno v:
Applied optics. 57(34)
The aim of this paper is to compare the Ronchi test and the Moire deflectometry applied to a new pattern. To do so, we used two Ronchi patterns (typical Ronchigrams) produced by two identical Ronchi rulings angularly displaced and placed close to the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d46667409d641241f90feab27eda9eb0
https://pubmed.ncbi.nlm.nih.gov/30645258
https://pubmed.ncbi.nlm.nih.gov/30645258
Autor:
J. A. Arriaga Hernández, J. Oliveros Oliveros, A. Jaramillo Núñez, M. Morín Castillo, B. T. Cuevas Otahola
Publikováno v:
Journal of Physics Communications. 5:055019
In this work, we show a Bi-Ronchi test (BRT) proposal using point cloud for sensing the whole surface and wavefront of spherical mirrors as a fast computational test with efficiency comparable with the Ronchi test. We also show an application of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cfd72e09a131ecb8db771fe2e47eb161
https://doi.org/10.1088/2399-6528/abfffa
https://doi.org/10.1088/2399-6528/abfffa
Autor:
J. Oliveros Oliveros, M. Morín Castillo, J. A. Arriaga Hernández, A. Jaramillo Núñez, B. T. Cuevas Otahola
Publikováno v:
Journal of Optics. 23:035601
In this work, we show a proposal involving differential and vectorial equations to obtain the scalar surface of a wavefront (W) and the transversal aberration (TA) from the Bi-Ronchi test (BRT). The execution and computation times of this technique a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c99b535cd2eb1c02582f63c1cf2c93d
https://doi.org/10.1088/2040-8986/abdb09
https://doi.org/10.1088/2040-8986/abdb09
Autor:
A. Jaramillo Núñez, J. A. Arriaga Hernández, J. Oliveros, M. Morín Castillo, B. T. Cuevas Otahola
Publikováno v:
Applied Optics. 59:3851
We tested different optical elements placed in three different positions by applying the irradiance transport equation (ITE), obtaining the wavefront [ W ( x , y ) ] and aberration surface [ AS ( r , θ ) ]. The existing noise in the captures I as we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b06c8b7c6cf4f4e89d8e74c95cc12b2b
https://doi.org/10.1364/ao.389716
https://doi.org/10.1364/ao.389716
Publikováno v:
Applied Optics. 58:5976
In this work, we propose the construction of the Moiré-Ronchigram as a pattern obtained from simple Ronchigrams, superposed and with a slight degree of rotation, to obtain a 3D wavefront. The aberrations in the obtained wavefront are fitted to the a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b5baad503e20c1e538969a9f28b391b
https://doi.org/10.1364/ao.58.005976
https://doi.org/10.1364/ao.58.005976