Results 171 to 180 of about 310,218 (192)

Contrasting the Vision and the Reality

Journal of Religion & Abuse, 2001
Abstract This article advocates the use of developing individual core ethical values as the first step in a process of using one's own principles as a means of keeping focused and grounded. The article does not stop but encourages the reader to actually use the value through the introduction of a straightforward yet sophisticated decision model ...
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Contrast Sensitivity and Functional Vision

International Ophthalmology Clinics, 2003
How well does a person see faces in a crowd, read a newspaper, or drive an automobile at night? These are vital questions about a person's quality of life and safety. Obtaining answers to these questions requires tests of functional vision.
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Vision channels, contrast sensitivity, and functional vision

SPIE Proceedings, 2004
The neurophysiology and psychophysics of vision provide the basis for vision channels. Vision channels are the foundation of understanding spatial vision. This understanding has led to the development of a general model of visual perception and tests of functional vision.
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Models of contrast sensitivity in human vision

IEEE Transactions on Systems, Man, and Cybernetics, 1993
Eight models are examined as input-output representations of steady-state vision in humans at moderate to low level illumination. Three new models for visual contrast sensitivity are introduced and evaluated using contrast sensitivity function (CSF) data with samples on both narrow and wide frequency ranges.
G.C. Gilmore, F.L. Royer, C.W. Thomas
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A silicon retina for polarization contrast vision

IJCNN'99. International Joint Conference on Neural Networks. Proceedings (Cat. No.99CH36339), 2003
Polarization vision is prevalent among insects, and offers visual capabilities that contribute to object discrimination and homing tasks. We present a CMOS imager that is capable of extracting polarization contrast in a scene. A similar visual modality has been seen in Octopus.
Z.K. Kalayjian, Andreas G. Andreou
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The embodied mind: Contrasting visions

Mind, Culture, and Activity, 1999
This article presents a critical examination and discussion of 2 arguments in support of the embodied mind position as developed within the philosophical literature of the Cognitive Linguistics paradigm. Employing the dialectical Materialist approach of Evald Ilyenkov (1997), closely allied to the cultural‐historical and activity theory traditions, the
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Spatial Vision and Aging. I: Contrast Sensitivity

Journal of Gerontology, 1980
Contrast sensitivity functions (CSFs) were measured for two groups of healthy observers, a younger group with mean age 18.5 years and an older group with mean age 73 years. Although the two groups had virtually identical sensitivities to high spatial frequencies (gratings with narrow bars), the younger observers were three times more sensitive at low ...
Robert Sekuler, Lucinda Picciano Hutman
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Temporal properties of spatial contrast vision

Vision Research, 1987
The temporal characteristics of spatial contrast vision at and above threshold were assessed psychophysically using sinusoidal gratings and a contrast-matching method. Temporal frequency response curves became flatter as contrast level increased. An impulse response model was fitted to these flicker data, and used to make predictions about temporal ...
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Contrasting Visions and Continuing Struggle

2020
This chapter addresses the European Community’s involvement in the creation of the European Science Foundation (ESF), an independent and nongovernmental European institution devoted to fundamental research, and another disappointment for the promoters of an EC-centric vision for European research collaboration.
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Vision assistance in scenes with extreme contrast

IEEE Micro, 1993
The performance and architecture of a high dynamic range camera (HDRC) chip and the conceptional advantages for its adaptation to image processing systems in traffic environments are discussed. The HDRC chip was developed with 64*64 pixels using a standard digital 1.2- mu m CMOS technology.
U. Seger, M.E. Landgraf, H.-G. Graf
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