Results 61 to 70 of about 1,094,287 (239)

Color Constancy from Physical Principles

open access: yes, 2003
A well known property of human vision, known as color constancy , is the ability to correct for color deviations caused by a difference in illumination. A common approach to investigate color constant behavior is by psychophysical experiments, regarding ...
Gevers, Th.   +10 more
core   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

The effect of background and illumination on color identification of real, 3D objects

open access: yesFrontiers in Psychology, 2013
For the surface reflectance of an object to be a useful cue to object identity, judgments of its color should remain stable across changes in the object's environment. In 2D scenes, there is general consensus that color judgments are much more stable
Sarah Ray Allred, Maria eOlkkonen
doaj   +1 more source

Color Constancy Using Single Colors [PDF]

open access: yes, 2012
This work investigates if the von Kries adaptation can be generalized to deal with single colored patches. We investigate which colored patches can give statistically equivalent performance to a white patch for von Kries adaptation. The investigation is then extended to couples of colors, and the analysis of the characteristics of the colors forming ...
openaire   +3 more sources

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

Munsell soil color charts

open access: yes, 2009
[30] p.Las Munsell Soil Color Charts constituyen un método para evaluar el tipo de suelo presente en una zona determinada. El libro está diseñado de manera que permite a los usuarios evaluar el color del suelo en terreno de manera rápida y sencilla.

core   +1 more source

Directed evolution of enzymes at the crossroads of tradition and innovation

open access: yesFEBS Open Bio, EarlyView.
An iterative cycle of data‐driven enzyme optimization comprising four stages: genetic diversification of a template enzyme, expression of protein variants, high‐throughput evaluation, and machine‐learning‐guided redesign of the next variant library.
Maria Tomkova   +2 more
wiley   +1 more source

Using Eye Tracking to Explore the Guidance and Constancy of Visual Variables in 3D Visualization

open access: yesISPRS International Journal of Geo-Information, 2017
An understanding of guidance, which means guiding attention, and constancy, meaning that an area can be perceived for what it is despite environmental changes, of the visual variables related to three-dimensional (3D) symbols is essential to ensure rapid
Bing Liu, Weihua Dong, Liqiu Meng
doaj   +1 more source

Molecular characterization of covRS mutations in M1UK Streptococcus pyogenes

open access: yesFEBS Open Bio, EarlyView.
Group A Streptococcus (GAS) acquires covRS mutations driving a hypervirulent bacterial state, frequently associated with invasive disease‐like necrotizing fasciitis. We demonstrate that the newly emerged M1UK GAS lineage can also acquire these mutations.
Jarrad Pritchard   +12 more
wiley   +1 more source

Lightness constancy: Object identity and temporal integration [PDF]

open access: yesPsihologija, 2008
Studies of lightness constancy typically involve the comparison of two objects of the same shade that have been placed under different illuminations. In this study, we introduce factors such as object identity and immediate prior experience to measure ...
Zdravković Sunčica
doaj   +1 more source

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