Results 251 to 260 of about 31,445 (293)
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Efficient Color Boundary Detection with Color-Opponent Mechanisms
2013 IEEE Conference on Computer Vision and Pattern Recognition, 2013Color 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 +3 more
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Mechanism of Color Breakup on Field‐Sequential Color Projectors
SID Symposium Digest of Technical Papers, 1999Abstract To investigate color breakup on field‐sequential color projector, we measured threshold of color fusion frequency to retinal velocity of the moving edge on the color flicker filed. The characteristic changed in the velocity as saccade.
Mineo Mori +6 more
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Mechanisms of central color vision
Current Opinion in Neurobiology, 1998In monkey cerebral cortex, color information is processed along the ventral visual pathway. This pathway starts in the primary visual cortex and ends in area TE of the inferior temporal cortex. Recent studies indicate that the transformation of cone signals occurs early in the pathway to form neurons selective to a narrow range of hues. In addition, it
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Retinal mechanisms of color vision
Vision Research, 1964Abstract Over a century and a half ago Young (1802) theorized that color discrimination is mediated by three photoreceptor substances, each maximally sensitive to a different region of the spectrum, and that the activity of each of these substances is somehow communicated in a unique fashion to the brain.
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THE RETINAL MECHANISM OF COLOR RECEPTION
Optometry and Vision Science, 1941This 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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Cone mechanisms underlying the color discrimination of deutan color deficients
Vision Research, 1985An 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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Mechanism of carotenoid coloration in the brightly colored plumages of broadbills (Eurylaimidae)
Journal of Comparative Physiology B, 2014The plumage carotenoids of six species from five genera of broadbills (Eurylaimidae) have been examined. These plumages are crimson, violet, purple-maroon, or yellow. Two genera also have brilliant green plumages that are produced by a combination of structural coloration and unknown carotenoids.
Richard O, Prum +4 more
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Color mechanisms in spinel: cobalt and iron interplay for the blue color
Physics and Chemistry of Minerals, 2015Six natural, blue colored spinel crystals were studied chemically by electron microprobe and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) techniques and optically by UV–VIS–NIR–MIR spectroscopy in the range 30,000–2,000 cm−1 to investigate the causes of their blue color hues.
D'IPPOLITO, VERONICA +5 more
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Color interchange mechanism considering color adaptation and gamut mapping
Journal of Electronic Imaging, 1993A 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 ...
Toru Yamasaki +4 more
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Color-vision mechanisms of the extrafoveal retina
Vision Research, 1984Wavelength discrimination, spectral sensitivity as well as color-matching performance were measured at the fovea and at different eccentricities in the peripheral retina. The results show that the underlying mechanisms of color vision in the normal peripheral retina are different from those of the classic forms of congenital color blindness.
U, Stabell, B, Stabell
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