Results 11 to 20 of about 50,981 (256)

An exponential filter model predicts lightness illusions [PDF]

open access: yesFrontiers in Human Neuroscience, 2015
Lightness, or perceived reflectance of a surface, is influenced by surrounding context. This is demonstrated by the Simultaneous Contrast Illusion (SCI), where a grey patch is perceived lighter against a black background and vice versa.
Astrid eZeman   +6 more
doaj   +3 more sources

When does grouping happen? [PDF]

open access: yes, 2003
Recent research on perceptual grouping is described with particular emphasis on identifying the level(s) at which grouping factors operate. Contrary to the classical view of grouping as an early, two-dimensional, image-based process, recent experimental ...
Palmer, S.E.   +8 more
core   +1 more source

Soil organic matter composition and soil lightness [PDF]

open access: yes, 2004
[EN]: Relationships between soil lightness, soil organic matter (SOM) composition, content of organic C, CaCO3, and texture were studied using 42 top-soil horizons from different soil types located in southern Germany.
Kögel-Knabner, Ingrid   +4 more
core   +1 more source

What image features guide lightness perception? [PDF]

open access: yes, 2018
Lightness constancy is the ability to perceive black and white surface colors under a wide range of lighting conditions. This fundamental visual ability is not well understood, and current theories differ greatly on what image features are important for ...
Kim, Minjung   +2 more
core   +2 more sources

Effect of magnetized water and magnetic field treatments on the physicochemical properties, total phenolic and antioxidant capacity of sprouted oats flour [PDF]

open access: yesفناوری‌های جدید در صنعت غذا
One proposed method for optimizing water use in agriculture is to pass irrigation water through a magnetic field. In this study, the impacts of magnetized water and magnetic field treatments on the moisture and ash contents, pH, acidity, color indices ...
Kimia Samary   +3 more
doaj   +1 more source

Qualidade da carne de cordeiros Santa Inês puros e mestiços com Texel abatidos com diferentes pesos Quality of meat production of purebred Santa Inês and crossbred Texel x Santa Inês lambs at different slaughter weights

open access: yesRevista Brasileira de Zootecnia, 2003
Propôs-se avaliar os parâmetros de qualidade pH, cor, perda de peso por cozimento (PPC) e força de cisalhamento (FC) no músculo Longissimus dorsi (LD) e Semimembranosus (SM) de 13 cordeiros machos e 14 fêmeas Santa Inês puro (SI x SI) e o mesmo número de
Sarita Bonagurio   +4 more
doaj   +1 more source

Urban experience alters lightness perception [PDF]

open access: yes, 2018
We present the first empirical evidence that experience alters lightness perception. The role of experience in lightness perception was investigated through a cross-cultural comparison of two visual contrast phenomena: simultaneous lightness contrast and
De Fockert, J. W.   +15 more
core   +1 more source

Lightness functions [PDF]

open access: yes, 2012
Variants of the brightness function of a convex body K in R-n are investigated. The Lambertian lightness function L-K(v, w) gives the total reflected light resulting from illumination by a light source at infinity in the direction w that is visible when ...
Kiderlen, Markus   +3 more
core   +1 more source

Chromatic Anchoring of Lightness

open access: yes, 2022
This study introduces a new, fundamental determinant of colour appearance: chromatic anchoring. We tested whether observers use the chromaticity of colours to anchor the colour gamut and estimate lightness (chromatic anchoring of lightness).
Christoph Witzel
core   +1 more source

The role of amodal surface completion in stereoscopic transparency

open access: yesFrontiers in Psychology, 2012
Previous work has shown that the visual system can decompose stereoscopic textures into percepts of inhomogeneous transparency. We investigate whether this form of layered image decomposition is shaped by constraints on amodal surface completion.
Barton eAnderson, Alex eSchmid
doaj   +1 more source

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