Results 31 to 40 of about 1,349,860 (222)

Switching dynamics of spatial solitary wave pixels [PDF]

open access: yes, 1993
Separatrices and scaling laws in the switching dynamics of spatial solitary wave pixels are investigated. We show that the dynamics in the full model are similar to those in the plane-wave limit.
Abraham   +27 more
core   +2 more sources

Vertical-junction photodiodes for smaller pixels in retinal prostheses

open access: yesJournal of Neural Engineering, 2021
Objective. To restore central vision in patients with atrophic age-related macular degeneration, we replace the lost photoreceptors with photovoltaic pixels, which convert light into current and stimulate the secondary retinal neurons.
Tiffany W Huang   +13 more
semanticscholar   +1 more source

Automated Detection of Regions of Interest for Brain Perfusion MR Images [PDF]

open access: yes, 2018
Images with abnormal brain anatomy produce problems for automatic segmentation techniques, and as a result poor ROI detection affects both quantitative measurements and visual assessment of perfusion data.
Alkhimova, Svitlana M
core   +2 more sources

Reversible data hiding based on reducing invalid shifting of pixels in histogram shifting [PDF]

open access: yesSignal Processing, 2019
In recent years, reversible data hiding (RDH), a new research hotspot in the field of information security, has been paid more and more attention by researchers.
Yujie Jia   +3 more
semanticscholar   +1 more source

SparseFool: A Few Pixels Make a Big Difference [PDF]

open access: yesComputer Vision and Pattern Recognition, 2018
Deep Neural Networks have achieved extraordinary results on image classification tasks, but have been shown to be vulnerable to attacks with carefully crafted perturbations of the input data.
Apostolos Modas   +2 more
semanticscholar   +1 more source

Weighted determination algoritm of boundary pixels

open access: yesСистемный анализ и прикладная информатика, 2021
While working with digital noise reduction techniques, which are based on theory of convolution matrix and used convolution operation, it necessary to use algorithms to bypass boundary pixels in the image pixel matrix.
D. V. Zaerko, V. A. Lipnitski
doaj   +1 more source

The Stellar Populations of Pixels and Frames [PDF]

open access: yes, 1998
Derived from first physical principles, a few simple rules are presented that can help in both the planning and interpretation of CCD and IR-array camera observations of resolvable stellar populations.
Alvio Renzini   +3 more
core   +2 more sources

Matrix silicon microcathodes for field emission displays [PDF]

open access: yesТехнологія та конструювання в електронній апаратурі, 2009
The existing and perspective types of flat displays are analysed. The structure of field emission display pixel cell, materials of microcathodes and technologies of their manufacturing are considered.
А. A. Druzhynin   +3 more
doaj   +1 more source

Fast Segmentation and Classification of Very High Resolution Remote Sensing Data Using SLIC Superpixels

open access: yesRemote Sensing, 2017
Speed and accuracy are important factors when dealing with time-constraint events for disaster, risk, and crisis-management support. Object-based image analysis can be a time consuming task in extracting information from large images because most of the ...
Ovidiu Csillik
doaj   +1 more source

The application of covariation method to the analysis (comparable) of digital images in cartography

open access: yesGeodesy and Cartography, 2012
The article discusses research on the identification (comparison) possibilities and accuracy analysis of digital images applying the theory of covariation method.
Jurgita Milieškaitė
doaj   +1 more source

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