The color of night: Surface color categorization by color defective observers under dim illuminations
نویسندگان
چکیده
منابع مشابه
The color of night: surface color categorization by color defective observers under dim illuminations.
People with normal trichromatic color vision experience variegated hue percepts under dim illuminations where only rod photoreceptors mediate vision. Here, hue perceptions were determined for persons with congenital color vision deficiencies over a wide range of light levels, including very low light levels where rods alone mediate vision. Deuteranomalous trichromats, deuteranopes and protanope...
متن کاملThe color of night: Surface color perception under dim illuminations.
Several studies document rudimentary color vision under dim illumination. Here, hue perceptions of paper color samples were determined for a wide range of light levels, including very low light levels where rods alone mediate vision. The appearances of 24 paper color samples from the OSA Uniform Color Scales were gauged under successively dimmer illuminations from 10-0.0003 Lux. Triads of sampl...
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In 1974, not long after an antenna was implanted in his skull, the British artist Neil Harbisson became the first person in history to be officially recognized as a cyborg.1 A cyborg—short for cybernetic organism—is a living thing formed from the integration of organic and mechanical parts. Before becoming a cyborg, Harbisson struggled as an art student afflicted with achromatopsia, an extremel...
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Color matching in Content-Based Image Retrieval is done using a color space and measuring distances between colors. Such an approach yields nonintuitive results for the user. We introduce color categories (or focal colors), determine that they are valid, and use them in two experiments. The experiments conducted prove the difference between color categorization by the cognitive processes color ...
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Color has been shown to be useful in the context of texture classification. However, since under different illuminations color is not stable, color invariant descriptors should be defined when the illumination of the query is unknown. In this paper, we propose to characterize color textures by analyzing the rank correlation of color planes between pixels locally close to each other. Thus, consi...
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ژورنال
عنوان ژورنال: Visual Neuroscience
سال: 2008
ISSN: 0952-5238,1469-8714
DOI: 10.1017/s0952523808080486