Results 91 to 100 of about 63,357 (302)

No-reference image quality metric based on image classification

open access: yesEURASIP Journal on Advances in Signal Processing, 2011
In this article, we present a new no-reference (NR) objective image quality metric based on image classification. We also propose a new blocking metric and a new blur metric.
Choi Hyunsoo, Lee Chulhee
doaj  

Constructing a metrics for blur perception with blur discrimination experiments

open access: yes, 2009
In this study, we measured blur discrimination threshold at different blur levels. We found that the discrimination threshold first decreased and then increased again as reference edge width blur increased.
Chen, CC   +4 more
core   +1 more source

Conductive Hydrogels for Exogenous Sensing and Cell Fate Control

open access: yesAdvanced Materials, EarlyView.
We engineer electrically conductive hydrogels by combining sulfated glycosaminoglycans with semiconducting polymers. These hydrogels bind bioactive proteins, including growth factors, whose release or retention can be modulated by low‐voltage stimulation. The hydrogels are also integrated as 3D channels in organic electrochemical transistors as part of
Teuku Fawzul Akbar   +15 more
wiley   +1 more source

Effect of gaze position and blur on stepping accuracy in older adults.

open access: yes, 2016
Purpose: To examine the effects of gaze position and optical blur, similar to that used in multifocal corrections, on stepping accuracy for a precision stepping task among older adults.\ud \ud Methods: Nineteen healthy older adults (mean age, 71.6 +/- 8 ...
Urquhart, Tom   +5 more
core   +1 more source

Blur Unblurred - A Mini Tutorial [PDF]

open access: yes, 2018
Optical blur from defocus is quite frequently considered as equivalent to low-pass filtering. Yet that belief, although not entirely wrong, is inaccurate.
Heinrich, Sven P.   +5 more
core   +1 more source

Double‐Transition‐Metal MXenes: Multimetallic 2D Platforms for Next‐Generation Biomedicine

open access: yesAdvanced Materials, EarlyView.
The present work explores recent progress in double‐transition‐metal MXenes and focuses on their potential as multifunctional biomedical nanoplatforms whose tunable optical, electronic, mechanical, and surface properties enable imaging, theranostics, antimicrobial activity, biosensing, tissue engineering, and drug delivery.
Parsa Namakiaraghi   +2 more
wiley   +1 more source

Suppressing Surface Degradation in Na‐Rich Prussian Blue Cathodes via Liquid‐Phase Dehydration

open access: yesAdvanced Materials, EarlyView.
Gas bubbling in a liquid medium lowers the local water vapor pressure and continuously removes desorbed water, enabling effective dehydration of Prussian Blue without inducing surface oxidation. This interfacial mass transfer‐driven process stabilizes the surface chemistry and improves electrochemical performance, providing a strategy for handling ...
Seunghye Jang   +8 more
wiley   +1 more source

Differential effects of refractive blur on day and night-time driving performance

open access: yes, 2014
Purpose\ud \ud To investigate the effect of different levels of refractive blur on real-world driving performance measured under day and nighttime conditions. \ud \ud Methods\ud \ud Participants included 12 visually normal, young adults (mean age = 25.8 ±
Marszalek, Ralph   +15 more
core   +1 more source

Depth-dependent blur adaptation

open access: yes, 2004
Variations in blur are present in retinal images of scenes containing objects at multiple depth planes. Here we examine whether neural representations of image blur can be recalibrated as a function of depth.
Aslin, Richard N.   +2 more
core   +1 more source

Examples of the blur feature in atmospheric turbulence blur.

open access: yes, 2020
Left: Atmospheric turbulence blur of the “house.bmp” image with σ = 2.0 (first row) and σ = 4.8 (second row). Middle: Gradient domain. Right: Amplitudes of the blur features.
Songmao Chen (8630397)   +4 more
core   +1 more source

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