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Contrast contrast determines perceived contrast
Optical Society of America Annual Meeting, 1991A testpatch of visual texture has greater apparent contrast when it is surrounded by a uniform mean gray field than by a background of similar, high contrast texture. Temporally modulating the contrast of surrounding texture induces a substantial antiphase modulation of testpatch apparent contrast.
Charles Chubb +2 more
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American journal of optometry and archives of American Academy of Optometry, 1970
ABSTRACT Chromatic contrast is of importance in contributing to the visibility of a colored object (10‐minute disc) on a colored background if the luminance contrast is very low. For luminance contrasts from zero to about 0.10.
S K, Guth, A A, Eastman
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ABSTRACT Chromatic contrast is of importance in contributing to the visibility of a colored object (10‐minute disc) on a colored background if the luminance contrast is very low. For luminance contrasts from zero to about 0.10.
S K, Guth, A A, Eastman
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Contrast and Depth Perception: Effects of Texture Contrast and Area Contrast
Perception, 2007Many objects in natural scenes have textures on their surfaces. Contrast of the texture surfaces (the texture contrast) reduces when the viewing distance increases. Similarly, contrast between the surfaces of the objects and the background (the area contrast) reduces when the viewing distance increases.
Shigeru, Ichihara +2 more
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Advances in Contrast Media and Contrast Injectors
Cardiology Clinics, 2009This article reviews the currently available contrast media used for imaging during coronary angiography and percutaneous intervention. Recent data regarding potential adverse effects of contrast media and strategies to minimize adverse events are discussed.
John C, Messenger, Ivan P, Casserly
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Contrast adaptation and contrast gain control
Experimental Brain Research, 1991Electrophysiological measurements have shown that contrast adaptation can increase the contrast gain of cortical cells of the cat and the monkey. This implies that adaptation could enhance the contrast discrimination sensitivity. Psychophysical contrast discrimination experiments were performed with and without contrast adaptation.
L M, Määttänen, J J, Koenderink
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Logic Journal of IGPL, 1995
Summary: I introduce the notion of bilogics, namely logics interpreted over a pair of structures, in contrast to classical logic and many of its variations, the formulae of which are interpreted over one structure. In particular, I introduce and study Contrastive Logic, suitable for expressing contrast and conformity between the two structures involved.
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Summary: I introduce the notion of bilogics, namely logics interpreted over a pair of structures, in contrast to classical logic and many of its variations, the formulae of which are interpreted over one structure. In particular, I introduce and study Contrastive Logic, suitable for expressing contrast and conformity between the two structures involved.
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The Contrast Contrast Illusion
2017Abstract To most observers, a patch of medium-contrast texture viewed against a background of high-contrast texture appears lower in contrast than an identical patch viewed against a homogeneous, mean gray background. This is the contrast contrast illusion.
Charles Chubb +2 more
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2008
Contrast in photographic and computer-generated imagery communicates colour and lightness differences that would be perceived when viewing the represented scene. Due to depiction constraints, the amount of displayable contrast is limited, reducing the image's ability to accurately represent the scene.
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Contrast in photographic and computer-generated imagery communicates colour and lightness differences that would be perceived when viewing the represented scene. Due to depiction constraints, the amount of displayable contrast is limited, reducing the image's ability to accurately represent the scene.
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Toboggan contrast enhancement for contrast segmentation
[1990] Proceedings. 10th International Conference on Pattern Recognition, 2002Toboggan contrast enhancement is a noniterative single-parameter linear execution time method for selectively augmenting the contrast of multispectral images of arbitrary dimensionality. Toboggan enhancement followed by contrast segmentation is compared with adaptive smoothing, all iterative, multiple parameter, parallel approach that achieves similar ...
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Brightness Contrast, Color Contrast, and Legibility
Human Factors: The Journal of the Human Factors and Ergonomics Society, 1965An experimental study was conducted investigating the effects of color and brightness contrast, direction of contrast, and six contrast values upon the legibility of a circular dial. The brightness of four chromatic hues was matched with four achromatic hues. Hues were combined in all possible combinations excluding chromatic with achromatic, resulting
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