Multiple-crystal X-ray topographic characterization of periodically domain-inverted KTiOPO4 crystal [PDF]
, 1995 A periodically domain-inverted KTiOPO4 crystal has been characterized for the first time by multiple-crystal multiple-reflection x-ray topography. The striation contrast within the domain- inverted regions has been revealed in high strain-sensitivity ...
Armstrong, +24 more
core +1 more source
A `bright zone' in male hoverfly (Eristalis tenax) eyes and associated faster motion detection and increased contrast sensitivity [PDF]
, 2006 Eyes of the hoverfly Eristalis tenax are sexually dimorphic such that males have a fronto-dorsal region of large facets. In contrast to other large flies in which large facets are associated with a decreased interommatidial angle to form a dorsal `acute ...
O'Carroll, David C. +2 more
core +2 more sources
Dyschromatopsia and contrast sensitivity changes in COVID-19 patients
Indian Journal of Ophthalmology, 2023 Purpose: To evaluate the alterations in the psycho-physical tests, contrast sensitivity (CS) and hue discrimination (total estimation score, TES) in COVID-19 patients.
Aditi Sharma +10 more
doaj +1 more source
Contrast sensitivity abnormalities in deaf individuals
Journal of Ophthalmic & Vision Research, 2018 Purpose: Hearing impaired children are heavily dependent on their sense of vision to develop efficient communication skills; any contrast sensitivity defect can negatively impact their lives because they are not able to use auditory stimuli to recognize ...
Masoud Khorrami-Nejad +3 more
doaj +1 more source
Reliability in perimetric multichannel contrast sensitivity measurements [PDF]
, 2014 Background: In this study, the reliability of perimetric contrast sensitivity measurements favouring the achromatic, the red-green and the blue-yellow post-receptorial mechanisms was analysed.
Camps, Vicente J. +4 more
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Noise provides new insights on contrast sensitivity function. [PDF]
PLoS ONE, 2014 Sensitivity to luminance difference, or contrast sensitivity, is critical for animals to survive in and interact with the external world. The contrast sensitivity function (CSF), which measures visual sensitivity to spatial patterns over a wide range of ...
Ge Chen +7 more
doaj +1 more source
Evaluating the Use of Contrast Sensitivity Tests By Orthoptists in the UK
British and Irish Orthoptic JournalIntroduction: The importance of the use of contrast sensitivity (CS) tests in orthoptic practice is well established. However, despite the clinical relevance the implementation within clinical care is known to be variable. There are no known studies that
Lowri Jones +2 more
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Contrast Enhancement Using Sensitivity Model-Based Sigmoid Function
IEEE Access, 2019 For indirect contrast enhancement, researchers have proposed various transformation functions based on histogram equalization and gamma correction.
Seung Park, Yong-Goo Shin, Sung-Jea Ko
doaj +1 more source
Contrast sensitivities in the Gaia Data Release 2
, 2018 The source detection sensitivity of Gaia is reduced near sources. To characterise this contrast sensitivity is important for understanding the completeness of the Gaia data products, in particular when evaluating source confusion in less well resolved ...
Brandeker, Alexis, Cataldi, Gianni
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Microstructural parameter estimation in vivo using diffusion MRI and structured prior information. [PDF]
, 2016 Diffusion MRI has recently been used with detailed models to probe tissue microstructure. Much of this work has been performed ex vivo with powerful scanner hardware, to gain sensitivity to parameters such as axon radius.
Aboitiz +43 more
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