Zobrazeno 1 - 10
of 723
pro vyhledávání: '"Xavier, A V"'
Ultracompact objects (UCOs) are horizonless compact objects that present light rings (LRs) - circular photon orbits. As a result, they could be black hole mimickers. Some years ago, Cunha et al. established a theorem stating that, under general assum
Externí odkaz:
http://arxiv.org/abs/2404.02208
Publikováno v:
Phys. Rev. D 108, 084060 (2023)
We study the scattering of axially incident massless scalar waves by a charged and rotating black hole solution from heterotic string theory called the Kerr-Sen black hole. We compute the scattering cross section using the partial wave approach, for
Externí odkaz:
http://arxiv.org/abs/2311.12953
Publikováno v:
Phys. Rev. D 107, 064040 (2023)
We investigate the shadow of an exact black hole solution of Einstein's equations recently proposed by Cardoso et al., to describe a supermassive black hole immersed in a dark matter halo. We analyze and discuss the light rings and the gravitational
Externí odkaz:
http://arxiv.org/abs/2303.17666
Exploring the Frontiers of Synthetic Image-Based Deep Learning Training in Digital X-ray Radiography
Publikováno v:
e-Journal of Nondestructive Testing, Vol 29, Iss 8 (2024)
Industrial radiography is a pivotal non-destructive testing (NDT) method that ensures quality and safety in a wide range of industrial sectors. Nevertheless, the conventional human-based approaches to carrying out industrial radiography are prone to
Externí odkaz:
https://doaj.org/article/1f6eac59abcf40baaea55a6fbbd980c5
Publikováno v:
IEEE Transactions on Instrumentation and Measurement 2021
Thermography has been used extensively as a complementary diagnostic tool in breast cancer detection. Among thermographic methods matrix factorization (MF) techniques show an unequivocal capability to detect thermal patterns corresponding to vasodila
Externí odkaz:
http://arxiv.org/abs/2106.02106
Publikováno v:
Sensors, Vol 24, Iss 15, p 4984 (2024)
In contrast to conventional non-destructive testing (NDT) and non-destructive evaluation (NDE) methodologies, including radiography, ultrasound, and eddy current analysis, coplanar capacitive sensing technique emerges as a novel and promising avenue
Externí odkaz:
https://doaj.org/article/c9386df0afde476a829e84091f303fee
Publikováno v:
Sensors, Vol 24, Iss 12, p 3778 (2024)
Efficient image stitching plays a vital role in the Non-Destructive Evaluation (NDE) of infrastructures. An essential challenge in the NDE of infrastructures is precisely visualizing defects within large structures. The existing literature predominan
Externí odkaz:
https://doaj.org/article/5273724a86154aae8ddb169767362a0e
Publikováno v:
Sensors, Vol 24, Iss 12, p 3994 (2024)
Efficient multi-modal image fusion plays an important role in the non-destructive evaluation (NDE) of infrastructures, where an essential challenge is the precise visualizing of defects. While automatic defect detection represents a significant advan
Externí odkaz:
https://doaj.org/article/177c0f50f55e4182bc66a0888183faa8
Publikováno v:
IEEE Transactions on Instrumentation and Measurement 2020
Active and passive thermography are two efficient techniques extensively used to measure heterogeneous thermal patterns leading to subsurface defects for diagnostic evaluations. This study conducts a comparative analysis on low-rank matrix approximat
Externí odkaz:
http://arxiv.org/abs/2010.06784
Multiscale shape skeletonization on pixel adjacency graphs is an advanced intriguing research subject in the field of image processing, computer vision and data mining. The previous works in this area almost focused on the graph vertices. We proposed
Externí odkaz:
http://arxiv.org/abs/2009.07970