Results 31 to 40 of about 83,564 (303)
African Vision and Eye Health, 2019 Background: Guidelines for predicting the amplitude of accommodation (AA) sometimes are based on measurements for the subjective push-up-to-blur method. However, the push-up-to-blur method often overestimates the accommodative response.
Mbali Z.G. Ndlovu +4 more
doaj +1 more source
Simulated validation and quantitative analysis of the blur of an integral image related to the pickup sampling effects [PDF]
Journal of the European Optical Society-Rapid Publications, 2014 In an integral imaging (II) system, the pickup sampling effects play an important role in affecting the blur of an integral image. In this paper, the blur property of an integral image due to the pickup sampling artifacts is first analyzed.
Chen Y., Wang X., Zhang J., Zong J.
doaj +1 more source
A texture-processing model of the 'visual sense of number' [PDF]
, 2014 It has been suggested that numerosity is an elementary quality of perception, similar to colour. If so (and despite considerable investigation), its mechanism remains unknown.
Tibber, M. +12 more
core +1 more source
A New Full-Reference Image Quality Metric for Motion Blur Profile Characterization
IEEE Access, 2021 Motion blur is common in images captured by handheld devices, arising from hand, device and/or object motion. To restore sharp images from the images degraded by the motion, it is extremely important to assess the quality of the captured image and its ...
Mohammad Abdullah-Al-Mamun +2 more
doaj +1 more source
Tilt-then-Blur or Blur-then-Tilt? Clarifying the Atmospheric Turbulence Model
, 2022 Imaging at a long distance often requires advanced image restoration algorithms to compensate for the distortions caused by atmospheric turbulence. However, unlike many standard restoration problems such as deconvolution, the forward image formation ...
Chan, Stanley H.
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Modeling nonstationary lens blur using eigen blur kernels for restoration [PDF]
, 2020 Images acquired through a lens show nonstationary blur due to defocus and optical aberrations. This paper presents a method for accurately modeling nonstationary lens blur using eigen blur kernels obtained from samples of blur kernels through principal ...
Gwak, Moonsung, Yang, Seungjoon
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Le flou du temps, le temps du flou chez Michael Wesely
FocalesThis essay analyzes photographs in which the blur is the deliberate result of a very long exposure, up to several years. In this case, it is not so much the movement of the human or animal body (or of vehicles) that generates this blurring, but the ...
Marc Lenot
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Известия высших учебных заведений. Поволжский регион:Технические науки, 2023 Background. The necessity of creating diagnostic systems for vibro-loaded objects is shown. Contactless systems have sufficient capabilities to determine the amplitude of vibrations, it is noted that an important part of such systems is the calibration ...
Nikita S. Reuta +4 more
doaj +1 more source
Perceived blur in amblyopia [PDF]
Ophthalmic and Physiological Optics, 2002 Purpose: It is well documented that visual acuity and contrast sensitivity in amblyopia are attenuated at high spatial frequencies: this would predict that amblyopes should perceive objects as blurred because they lack high spatial frequency information necessary to adequately represent sharp edges. In a series
Anita J, Simmers +2 more
openaire +2 more sources
Single‐molecule DNA flow‐stretch assays for high‐throughput DNA–protein interaction studies
FEBS Open Bio, EarlyView.We describe an optimised single‐molecule DNA flow‐stretch assay that visualises DNA–protein interactions in real time. Linear DNA fragments are tethered to a surface and stretched by buffer flow for fluorescence imaging. Using λ and φX174 DNA, this protocol enhances reproducibility and accessibility, providing a versatile approach for studying diverse ...
Ayush Kumar Ganguli +8 more
wiley +1 more source