Results 31 to 40 of about 2,367,621 (266)

Enhancement of near-infrared response for GaAs-based photocathode with laminated graded-bandgap structure: theory and experiment

Journal of Materials Research and Technology, 2022
To enhance the quantum efficiency of GaAs-based photocathode in the near-infrared range, a laminated graded-bandgap photocathode structure consisting of a distributed Bragg reflection layer and a graded-bandgap emission layer is proposed. The theoretical
Ziheng Wang, Yijun Zhang, Shiman Li, Shan Li, Jingjing Zhan, Yunsheng Qian, Feng Shi, Hongchang Cheng, Gangcheng Jiao, Yugang Zeng   +9 more
doaj   +1 more source

The Whole World in Your Hand: Active and Interactive Segmentation [PDF]

, 2003
Object segmentation is a fundamental problem in computer vision and a powerful resource for development. This paper presents three embodied approaches to the visual segmentation of objects. Each approach to segmentation is aided by the presence of a hand
Arsenio, Artur, Fitzpatrick, Paul, Kemp, Charles C., Metta, Giorgio   +3 more
core   +4 more sources

Vision Rehabilitation in Patients with Age-related Macular Degeneration

Rehabilitation Process and Outcome, 2014
Background The aim of this study was to investigate the rehabilitative process and visual rehabilitation outcomes in patients with central vision loss due to age-related macular degeneration (AMD).
Filippo M. Amore, Stefania Fortini, Valeria Silvestri, Marco Sulfaro, Alessia Pacifici, Simona Turco   +5 more
doaj   +1 more source

Low Vision and Rehabilitation

Delhi Journal of Ophthalmology, 2022
Low vision and rehabilitation are not widely known and practiced in ophthalmology clinics even if there are significant number of blind and visually impaired patients who cannot be improved by spectacles, lenses or surgery.
Parikshit Gogate, Muskan Shaikh, Sharad Telap, Siddharth Gogate, Supriya Phadke   +4 more
doaj   +1 more source

Data Augmentation for Low-Resource Neural Machine Translation [PDF]

, 2017
The quality of a Neural Machine Translation system depends substantially on the availability of sizable parallel corpora. For low-resource language pairs this is not the case, resulting in poor translation quality. Inspired by work in computer vision, we
Bisazza, Arianna, Fadaee, Marzieh, Monz, Christof   +2 more
core   +2 more sources

Absent Foveal Pit, Also Known as Fovea Plana, in a Child without Associated Ocular or Systemic Findings

Case Reports in Ophthalmological Medicine, 2018
The purpose of this report is to describe a case of bilateral foveal hypoplasia in the absence of other ophthalmological or systemic manifestations. We characterize the case of a 9-year-old Caucasian male who underwent full ophthalmologic examination ...
Laura Hernandez-Moreno, Natacha Moreno Perdomo, Tomas S. Aleman, Karthikeyan Baskaran, Antonio Filipe Macedo   +4 more
doaj   +1 more source

Visual rehabilitation via microperimetry in patients with geographic atrophy: a pilot study

International Journal of Retina and Vitreous, 2017
Background Age-related macular degeneration (AMD) is the leading cause of blindness in the western world. As a consequence of AMD, patients develop structural damage that comprises the fovea and subsequently present loss of central vision, low visual ...
Juan Abel Ramírez Estudillo, Mario Isaías León Higuera, Sergio Rojas Juárez, Maria de Lourdes Ordaz Vera, Yessica Pablo Santana, Benito Celis Suazo   +5 more
doaj   +1 more source

High-for-Low and Low-for-High: Efficient Boundary Detection from Deep Object Features and its Applications to High-Level Vision

, 2015
Most of the current boundary detection systems rely exclusively on low-level features, such as color and texture. However, perception studies suggest that humans employ object-level reasoning when judging if a particular pixel is a boundary.
Bertasius, Gedas, Shi, Jianbo, Torresani, Lorenzo   +2 more
core   +1 more source

Risk Factors of Low Vision in Children [PDF]

, 2015
Low vision and blindness is a vision disorder that becomes an important issue with regard to a persons independence. According to data owned by the World Health Organization in 2011, the number of blind people in the world reached 39 million, 246 million
Dianawati, T. (Tiur), Sofiana, L. (Liena)   +1 more
core   +2 more sources

A Systematic Review of Evidence on the Clinical Effectiveness of Surveillance Imaging in Children With Medulloblastoma and Ependymoma

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Surveillance imaging aims to detect tumour relapse before symptoms develop, but it's unclear whether earlier detection of relapse leads to better outcomes in children and young people (CYP) with medulloblastoma and ependymoma. This systematic review aims to identify relevant literature to determine the efficacy of surveillance magnetic ...
Lucy Shepherd, Melissa Taylor, Helen Fulbright, Bob Phillips   +3 more
wiley   +1 more source