Results 31 to 40 of about 5,554,949 (261)

Investigation of Enhanced Ambient Contrast Ratio in Novel Micro/Mini-LED Displays

Nanomaterials, 2021
In recent years, ambient contrast ratio (ACR) has become very critical for advanced outdoor displays, including transparent displays, portable displays, and so on.
Ke Zhang, Tingting Han, Wai-Keung Cho, Hoi-Sing Kwok, Zhaojun Liu   +4 more
doaj   +1 more source

The functional role of contrast adaptation [PDF]

, 1988
Prolonged inspection of high contrast sinewave gratings increases the contrast required to detect gratings having a similar spatial frequency and orientation. The functional role of such adaptation has, however, in the past, eluded disclosure.
Heitger, F., Greenlee, Mark W.
core   +1 more source

Contrast‐to‐noise ratios of diffusion anisotropy indices [PDF]

Magnetic Resonance in Medicine, 2005
AbstractThe degree of diffusion anisotropy in different brain regions is usually measured by a diffusion anisotropy index (DAI) such as relative anisotropy (RA) and fractional anisotropy (FA). FA has been reported to have a higher contrast‐to‐noise ratio (CNR) than RA. The present work compares the CNRs of seven DAIs in theoretical propagation‐of‐error
Peter B, Kingsley, W Gordon, Monahan
openaire   +2 more sources

Contrast-to-noise ratio.

, 2016
Contrast-to-noise ratio of a central pulmonary artery as a central vessal (cCNR) for all reconstruction algorithms and dose levels shown as mean ± standard deviation.
Daniela Münzel (489948), Andreas Sauter (3112260), Bernhard Brendel (3112257), Peter B. Noël (406297), Thomas Koehler (632797), Vivien Richter (3112251), Michael Rasper (3112254), Ernst J. Rummeny (342885), Alexander A. Fingerle (468512)   +8 more
core   +1 more source

Evaluation of Scatter Correction Methods in SPECT Images: A Phantom-Based Study of TEW and ESSE Methods

Radiation
We compared scatter correction (SC) in single-photon emission computed tomography (SPECT) images using effective scatter source estimation (ESSE) and the triple-energy window (TEW) method.
Ryutaro Mori, Koichi Okuda, Tomoya Okamoto, Yoshihisa Niioka, Kazuya Tsushima, Masakatsu Tsurugaya, Shota Hosokawa, Yasuyuki Takahashi   +7 more
doaj   +1 more source

Contrast-to-noise ratio and pixel error for each material in images (a)-(d) shown in Fig 6.

, 2019
Contrast-to-noise ratio and pixel error for each material in images (a)-(d) shown in Fig 6.
Joseph Harms (3600506), Luke Maloney (7353686), Anna Erickson (7353689)   +2 more
core   +1 more source

R_Contrast: Rapid measurement of recognition contrast thresholds. [PDF]

, 1997
R_Contrast is a program for the rapid assessment of recognition contrast thresholds on the ...
Strasburger, Hans, Hans Strasburger
core   +1 more source

All-Optical XOR, AND, OR, NOT, NOR, NAND, and XNOR Logic Operations Based on M-Shaped Silicon Waveguides at 1.55 μm

Micromachines
Silicon waveguides are essential to integrated photonics, which is where optical and electronic components are coupled together on a single silicon chip.
Amer Kotb, Kyriakos E. Zoiros, Wei Chen
doaj   +1 more source

The time course of adaptation to spatial contrast [PDF]

, 1991
We explored the buildup and decay of threshold elevation during and after adaptation to sinewave gratings in a series of experiments investigating the effects of adapting time, adapting contrast, spatial frequency and retinal eccentricity.
Harris, J. P., Georgeson, M. A., Magnussen, S., Greenlee, Mark W.   +3 more
core   +1 more source

Oblique views of chest radiography from a designed rotation angle recommendation increase the contrast ratio between obscured lesions and surrounding structures

Thoracic Cancer, 2019
Background Chest radiography (CXR) is the main tool used to detect pulmonary nodules. Lateral views of CXR are less effective and the aim of our study was to develop a rotation angle recommendation model to obtain the best oblique CXR with significantly ...
Hui‐Chen Lin, Chung‐Yao Huang, Wei‐Ming Huang, Zong‐Yi Jhou, Chia‐Hung Chen, Yu‐Chan Chien, Chun‐Chao Huang   +6 more
doaj   +1 more source