Results 71 to 80 of about 1,349,860 (222)
Revista Facultad de Odontología Universidad de Antioquia, 2009 INTRODUCCIÓN: el desarrollo tecnológico vertiginoso, aplicado al diagnóstico mediante imágenes radiológicas digitales ha abierto una nueva dimensión en la valoración cualitativa y cuantitativa de los componentes esqueléticos y dentales así como también ...
Gianna López-Videla Montaño +2 more
doaj
Reversible Data Hiding in Encrypted Image Based on Multi-MSB Embedding Strategy
Applied Sciences, 2020 In this paper, a reversible data hiding method in encrypted image (RDHEI) is proposed. Prior to image encryption, the embeddable pixels are selected from an original image according to prediction errors due to adjacent pixels with strong correlation ...
Dewang Wang +3 more
doaj +1 more source
Front- vs. back-illuminated CCD cameras for photometric surveys: a noise budget analysis
, 2007 Exoplanetary transit and stellar oscillation surveys require a very high precision photometry. The instrumental noise has therefore to be minimized. First, we perform a semi-analytical model of different noise sources.
Charbonneau +9 more
core +2 more sources
Guided Super-Resolution As Pixel-to-Pixel Transformation [PDF]
2019 IEEE/CVF International Conference on Computer Vision (ICCV), 2019 Guided super-resolution is a unifying framework for several computer vision tasks where the inputs are a low-resolution source image of some target quantity (e.g., perspective depth acquired with a time-of-flight camera) and a high-resolution guide image from a different domain (e.g., a grey-scale image from a conventional camera); and the target ...
de Lutio, Riccardo +3 more
openaire +2 more sources
Memristor-Based Edge Detection for Spike Encoded Pixels
Frontiers in Neuroscience, 2020 Memristors have many uses in machine learning and neuromorphic hardware. From memory elements in dot product engines to replicating both synapse and neuron wall behaviors, the memristor has proved a versatile component. Here we demonstrate an analog mode
Daniel J. Mannion +3 more
doaj +1 more source
Random telegraph signals in charge coupled devices [PDF]
, 2004 An investigation of fluctuating pixels resulting from proton irradiation of an E2V Technologies CCD47-20 device is presented. The device structure,experimental set up and irradiation methodology are described, followed by a detailed analysis of radiation
Holland, AD, Hutchinson, IB, Smith, DR
core
Phase retrieval by power iterations
, 2012 I show that the power iteration method applied to the phase retrieval problem converges under special conditions. One is given the relative phases between small non-overlapping groups of pixels of a recorded intensity pattern, but no information on the ...
Marchesini, Stefano
core +2 more sources
Imaging properties of pixellated scintillators with deep pixels [PDF]
SPIE Proceedings, 2014 We have investigated the light-transport properties of scintillator arrays with long, thin pixels (deep pixels) for use in high-energy gamma-ray imaging. We compared 10×10 pixel arrays of YSO:Ce, LYSO:Ce and BGO (1mm × 1mm × 20 mm pixels) made by Proteus, Inc.
H Bradford, Barber +7 more
openaire +2 more sources
Frequency-Reconfigurable Dipole Antenna Using Liquid-Metal Pixels
International Journal of Antennas and Propagation, 2018 A frequency-tunable half-wavelength dipole antenna is realized using an array of electrically actuated liquid-metal pixels. The liquid-metal pixelated dipole antenna demonstrates frequency reconfigurability by switching between resonances at 2.51 GHz, 2 ...
Kent J. Sarabia +5 more
doaj +1 more source
Sensors, 2014 Biosignals will play an important role in building communication between machines and humans. One of the types of biosignals that is widely used in neuroscience are electrooculography (EOG) signals.
Muhammad Ilhamdi Rusydi +2 more
doaj +1 more source