Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"color contrast"”.
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Accomodation with displays having color contrast
… by VDT users. The increased use of multicolor CRTs in the workplace adds yet another factor, chromatic aberration, to affect the observers' accommodation to information presented on the CRT. Two experiments were run to determine the effect of viewing characters of one chromaticity and …
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Performance Implications Of Alternative Color-codesin Airport X-ray Baggage Screening
… and affective influences of alternative color combinations in a search task paradigm. The effects of re-mapping the existing, comparatively arbitrarily color codes of baggage X-ray images, were explored. Alternative color-codes were evaluated for improving the economy of visual search in …
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Comparing LED Lighting Systems in the Detection and Color Recognition of Roadway Objects
… abilities to provide detection distance and color recognition distance of potential roadway hazard. Detection distance is regarded as a metric of visibility. Color recognition distance is a metric for comparing the impact of the (Correlated Color Temperature) CCT of each luminaire and their …
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Toward accessible evaluation of the electrophysiology of human vision
… to characterize their specific experience of color, contrast, and movement, making way for a whole new paradigm of tailored display technologies.
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Sensory Ecology of Foraging in Bumblebees
… time for artificial flowers of various sizes and colors, a key variable defining the value of a prey type in optimal foraging theory. When flowers were large, search times correlate well with the color contrast of the targets with their green foliage-type background, as predicted by a model of …
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Les carrières en fin d'activités: un potentiel paysager?
… and the landform in bleachers. Furthermore, color contrast and textures from vegetation, rock and water were also relevant. An apparent aesthetic landscape quality was perceived and the study showed that respondents are feeling good in the site surveyed. The quarryscape can be characterized …
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The Consequence of Anthropogenic Disturbance on Communication and the Operation of Sexual Selection in the Eastern Bluebird (Sialia Sialis)
… communication. I tested whether nestling mouth coloration in Eastern bluebirds (Sialia sialis) was a signal of quality, and if a parents ability to discriminate among the mouth coloration of their nestlings was affected by level of human disturbance. I found that the perceived color contrast of …
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Unitary suprathreshold color-difference metrics of legibility for CRT raster imagery
… dissertation examined the relationships between color contrast and legibility for digital raster video imagery. CIE colorimetric components were combined into three-dimensional color coordinate systems whose coordinates map one-to-one with the physical energy parameters of all colors. The …
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Structural Model Discovery in Temporal Event Data Streams
… information, extractable visual information - color, contrast, shape, etc. However, these captured aspects may not uncover all salient information in the data or provide adequate models/patterns of phenomena of interest. This is a challenging problem for social scientists who are trying to …
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Evaluation and improvement of optical remote sensing methods in monitoring particulate matter emissions and plume opacity
… developed by Du (2007), namely: 1) the contrast model that requires a plume passing in front of and near one of two co-located contrasting backgrounds; and 2) the transmission model that requires a plume passing in front of and near one background, and a diffusive scattering parameter …
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Behavioral Measures and Ecological Correlates of Vision in Poeciliid Fishes
… visual stimuli that vary in spatial detail and contrast, (2) correlates of eye size and eye investment across P. reticulata populations that experience different threats from predation and, (3) visual signaling correlates of eye size across the family Poeciliidae.</p><p>The first chapter of this …
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Communication-theoretic Approach for Skin Cancer Detection using Dynamic Thermal Imaging
… l edge detection based solely on spectral (color) information. More precisely, this algorithm fuses the process of detecting edges through ratios of pixels with critical information resulting from spectral classification of the very image whose edges are to be identified. This algorithm is …