Results 51 to 60 of about 508,718 (191)

Deep learning-based single image face depth data enhancement

Computer Vision and Image Understanding, 2021
Face recognition can benefit from the utilization of depth data captured using low-cost cameras, in particular for presentation attack detection purposes. Depth video output from these capture devices can however contain defects such as holes or general depth inaccuracies. This work proposes a deep learning face depth enhancement method in this context
Schlett, Torsten, Rathgeb, Christian, Busch, Christoph   +2 more
openaire   +2 more sources

Recovering Depth Map from Enhanced Image Gradients

Procedia Computer Science, 2015
AbstractThis paper presents a new and efficient approach for recovering surface height from its image gradients. In order to compensate noise effect in image intensities, Gaussian filter is used to smooth the intensity values. Image gradient is calculated from the smoothen image by taking the central difference of intensity values.
Bala, Anu, Kumar, Sanjeev, Bhargava, Rama   +2 more
openaire   +1 more source

Two-Dimensional Helioseismic Power, Phase, and Coherence Spectra of {\it Solar Dynamics Observatory} Photospheric and Chromospheric Observables

, 2012
While the {\it Helioseismic and Magnetic Imager} (HMI) onboard the {\it Solar Dynamics Observatory} (SDO) provides Doppler velocity [$V$], continuum intensity [$I_C$], and line-depth [$Ld$] observations, each of which is sensitive to the five-minute ...
A. Fossum, A. Jiménez, A.A. Norton, B. Fleck, C. Barban, Charles S. Baldner, D.C. Braun, Deborah A. Haber, F. Hill, F.-L. Deubner, F.-L. Deubner, G. Severino, H. Schunker, J.M. Krijger, K. Muglach, K. Nagashima, Kiran Jain, P.F. Moretti, P.G. Judge, P.H. Scherrer, R. Howe, R. Howe, R. Howe, R. Jain, Rachel Howe, Richard S. Bogart, T. Sekii, T.M. Brown, W. Finsterle, Y. Elsworth   +29 more
core   +1 more source

Vascular Response to Sildenafil Citrate in Aging and Age-Related Macular Degeneration. [PDF]

, 2019
Age-related macular degeneration (AMD) - the leading cause of vision loss in the elderly - share many risks factors as atherosclerosis, which exhibits loss of vascular compliance resulting from aging and oxidative stress.
Agrawal, Rupesh, Cheung, Chui Ming Gemmy, Cunefare, David, Farsiu, Sina, Khandelwal, Neha, Migacz, Justin, Tran, Steven, Vuong, Vivian S, Yiu, Glenn   +8 more
core   +2 more sources

Depth Imaging Enhancement Using Reverse Time Migration

IOP Conference Series: Earth and Environmental Science, 2017
Imaging the subsurface with complex structures and steeply dipping salt boundaries is a challenging task in seismic exploration. Between two main categories of seismic migration, wavefield-continuation methods have been more successful than ray-based ones.
S.Y. Moussavi Alashloo, D.P. Ghosh, Y. Bashir, W.I. Wan Yusoff   +3 more
openaire   +1 more source

Optimizing visualization in enhanced depth imaging OCT in healthy subjects and patients with retinal pigment epithelial detachment

Clinical Ophthalmology, 2012
Lukas Reznicek, Efstathios Vounotrypidis, Florian Seidensticker, Karsten Kortuem, Anselm Kampik, Aljoscha S Neubauer, Armin WolfDepartment of Ophthalmology, Ludwig Maximilians University Muenchen, Munich, GermanyBackground: This study’s ...
Kampik A, Kortuem K, Seidensticker F, Vounotrypidis E, Reznicek L, Neubauer AS, Wolf A   +6 more
doaj  

Comparative analysis of choroidal thickness in third trimester pregnant women

International Journal of Retina and Vitreous, 2018
Background The impact of pregnancy on the choroid is still under investigation. The aim of this study is to compare choroidal thickness measurements of healthy pregnant women in the third trimester and healthy non-pregnant women using spectral-domain ...
Camila Zanella Benfica, Teresinha Zanella, Lucas Brandolt Farias, Maria Lúcia Rocha Oppermann, Luis Henrique Santos Canani, Daniel Lavinsky   +5 more
doaj   +1 more source

Optical Coherence Tomography in Inflammatory and Neoplastic Lesions Deforming the Choroidal Profile

Diagnostics, 2023
The choroid is the main part of the uvea, the vascular layer of the eye that lies between the retina and the sclera. The high vascular component of the choroid makes this structure susceptible to inflammation in multisystemic diseases, as well as the ...
Elena Bolletta, Luca De Simone, Marco Pellegrini, Chiara Preziosa, Valentina Mastrofilippo, Chantal Adani, Pietro Gentile, Fabrizio Gozzi, Luca Cimino   +8 more
doaj   +1 more source

Comparison of enhanced depth imaging and high-penetration optical coherence tomography for imaging deep optic nerve head and parapapillary structures

Clinical Ophthalmology, 2013
Atsuya Miki, Yasushi Ikuno, Yukari Jo, Kohji NishidaDepartment of Ophthalmology, Osaka University Graduate School of Medicine, Osaka, JapanPurpose: To evaluate and compare the abilities of enhanced depth imaging (EDI) and high-penetration optical ...
Miki A, Ikuno Y, Jo Y, Nishida K
doaj  

Evaluation of Choroidal Thickness in Normal Eyes Using Enhanced Depth Optical Coherence Tomography

Delhi Journal of Ophthalmology, 2017
Purpose: To evaluate the choroidal thickness in normal Indian population and to determine its correlation with age and refractive error Design: Cross sectional study conducted at a tertiary eye hospital in North India.
Harish, Shalini Singh, Manisha Agarwal, Rahul Mayor, Ramesh Venkatesh, Lokesh Chauhan   +5 more
doaj   +1 more source