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Título:
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Perception of high-contrast blurred edges
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Autores:
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Sanz, Iván ;
Chevalier del Río, Margarita ;
Lakshminarayanan, Vasudevan
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Tipo de documento:
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texto impreso
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Editorial:
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Academic Press Inc. / Elsevier Science, 2001-09
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Optica
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Tipo = Artículo
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Resumen:
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Observer sensitivity to edge blur has been examined by experimental measurements of threshold blur as a function of contrast. An extension of previous results from Watt and Morgan for high-contrast blur edges is discussed and analyzed. We propose a psychophysical test based on a two-alternative forced choice test. The results found for three adult observers show a comparable behavior. A tendency for the blur threshold to reach an average value as contrast increases is mainly discussed. These results complement previous ones from other authors for which low- and intermediate-contrast ranges were analyzed. The observed behavior suggests a need to improve algorithms for image quality assessment, extending the actual range of contrast values to high-contrast ones.
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En línea:
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https://eprints.ucm.es/id/eprint/25624/1/CalvoML66.pdf
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