Results 71 to 80 of about 1,739,418 (322)

Deep Inverse Tone Mapping for Compressed Images

open access: yesIEEE Access, 2019
Converting a single low dynamic range (LDR) image into a high dynamic range (HDR) image, which is the so-called inverse tone mapping (ITM), is a challenging ill-posed problem since a lot of information is lost during compression and storage.
Chao Wang, Yang Zhao, Ronggang Wang
doaj   +1 more source

High dynamic range imaging for archaeological recording [PDF]

open access: yes, 2010
This paper notes the adoption of digital photography as a primary recording means within archaeology, and reviews some issues and problems that this presents.
Wheatley, David
core   +1 more source

Structural insights into lacto‐N‐biose I recognition by a family 32 carbohydrate‐binding module from Bifidobacterium bifidum

open access: yesFEBS Letters, EarlyView.
Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang   +5 more
wiley   +1 more source

The role and implications of mammalian cellular circadian entrainment

open access: yesFEBS Letters, EarlyView.
At their most fundamental level, mammalian circadian rhythms occur inside every individual cell. To tell the correct time, cells must align (or ‘entrain’) their circadian rhythm to the external environment. In this review, we highlight how cells entrain to the major circadian cues of light, feeding and temperature, and the implications this has for our
Priya Crosby
wiley   +1 more source

High Dynamic Range Image Watermarking Robust Against Tone-Mapping Operators [PDF]

open access: yes, 2011
High dynamic range (HDR) images represent the future format for digital images since they allow accurate rendering of a wider range of luminance values. However, today special types of preprocessing, collectively known as tone-mapping (TM) operators, are
Adami N.   +3 more
core   +1 more source

Retina inspired tone mapping method for high dynamic range images.

open access: yesOptics Express, 2020
The limited dynamic range of regular screens restricts the display of high dynamic range (HDR) images. Inspired by retinal processing mechanisms, we propose a tone mapping method to address this problem.
Xian-Shi Zhang   +3 more
semanticscholar   +1 more source

Molecular bases of circadian magnesium rhythms across eukaryotes

open access: yesFEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Multi-Layer Decomposition and Synthesis of HDR Images to Improve High-Saturation Boundaries

open access: yesMathematics, 2023
Recently, high dynamic range (HDR) imaging has been used in many fields such as display, computer graphics, and digital cameras. Various tone mapping operators (TMOs) are used for effective HDR imaging.
Hyuk-Ju Kwon, Sung-Hak Lee
doaj   +1 more source

Learned Perceptual Image Enhancement

open access: yes, 2017
Learning a typical image enhancement pipeline involves minimization of a loss function between enhanced and reference images. While L1 and L2 losses are perhaps the most widely used functions for this purpose, they do not necessarily lead to perceptually
Milanfar, Peyman, Talebi, Hossein
core   +1 more source

Can meaningful effective connectivities be obtained between auditory cortical regions? [PDF]

open access: yes, 2001
Structural equation modelling (SEM) of neuroimaging data can be evaluated both for the goodness of fit of the model and for the strength of path coefficients (as an index of effective connectivity).
Gonçalves, MS   +3 more
core   +2 more sources

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