Results 231 to 240 of about 79,443 (280)

Quantum mechanical model of color transparency

Physical Review D, 1992
We study a simple quantum-mechanical model that illustrates various conceptual questions associated with color transparency.
, Blaizot, , Venugopalan, , Prakash
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Uniform color space based on color vision mechanisms

SPIE Proceedings, 2002
A uniform color space based on color vision mechanisms was proposed. The mechanisms considered to construct the uniform color space were, proportion of three types of cones, compressive response nonlinearity at receptor and post- receptor stages, constant noise or dark response added to the receptor response, and fractional expressions of opponent and ...
Yasuhisa Nakano, Ryuzo Yamashita, Yukinari Fukuda, Ken-ichiro Suehara, Takuo Yano   +4 more
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Efficient Color Boundary Detection with Color-Opponent Mechanisms

2013 IEEE Conference on Computer Vision and Pattern Recognition, 2013
Color information plays an important role in better understanding of natural scenes by at least facilitating discriminating boundaries of objects or areas. In this study, we propose a new framework for boundary detection in complex natural scenes based on the color-opponent mechanisms of the visual system.
Kaifu Yang, Shaobing Gao, Chaoyi Li, Yongjie Li   +3 more
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Cone mechanisms underlying the color discrimination of deutan color deficients

Vision Research, 1985
An alternation method of color matching was used to obtain a series of extended Rayleigh matches from several deutan color deficients with varying degrees of color discrimination. With large stimulus fields there were differences in the matches made by observers with good color discrimination and the matches made by observers with poor color ...
A L, Nagy, K F, Purl, J S, Houston
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Mechanisms of color vision.

Critical reviews in neurobiology, 1988
We review the physiological and psychophysical research on mechanisms of color vision. Psychophysical work has led to the formulation of explicit theories of the early stages of color vision. The principal postulates of these theories have been confirmed by physiologists (e.g., the existence of three classes of receptors and second-stage mechanisms in ...
P, Lennie, M, D'Zmura
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Quantum chromodynamics with colored Higgs mechanism

Physical Review D, 1985
We derive, in the context of a previously proposed chiral soliton bag model with colored Higgs mechanism, the field equations for the eight gluons and the remaining four Higgs particles. It is pointed out that the boundary condition used by Jaendel for supporting his claim about the lack of a suppression mechanism for open-color states do not follow ...
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Physiological mechanisms of color constancy

Neurophysiology, 1975
Color constancy is the term given to the ability to recognize the color of objects correctly under different conditions of illumination. For this purpose the visual system must determine the character of the illumination, introduce a correction for it into the spectal composition of the light received from the object, and hence recreate the true color ...
E. M. Maksimova, A. M. Dimentman, V. V. Maksimov, P. P. Nikolaev, O. Yu. Orlov   +4 more
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THE RETINAL MECHANISM OF COLOR RECEPTION

Optometry and Vision Science, 1941
This paper is a review of the analysis of color reception with the aid of electrophysiological methods. Microelectrodes have been inserted into the retina to record the discharge of impulses from single or a restricted number of elements in response to illumination with a spectrum of known energy distribution.
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Neural Mechanisms of Color Vision

Comprehensive Physiology, 1984
Abstract The sections in this article are: Photopigments Spectral Absorbance Characteristics Univariance of Photopigment Response
Russell L. De Valois, Gerald H. Jacobs
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Color interchange mechanism considering color adaptation and gamut mapping

Journal of Electronic Imaging, 1993
A new color interchange mechanism in a networked color system is proposed. Compared with the current color interchange mechanism adopted in international standards such as open document architecture and standard page description language, it considers recent algorithms about color adaptation correction and gamut mapping, e.g., Nayatani's color ...
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