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Titolo:
The role of spatial frequency in color induction
Autore:
Smith, VC; Jin, PQ; Pokorny, J;
Indirizzi:
Univ Chicago, Ctr Visual Sci, Chicago, IL 60637 USA Univ Chicago Chicago IL USA 60637 , Ctr Visual Sci, Chicago, IL 60637 USA
Titolo Testata:
VISION RESEARCH
fascicolo: 8, volume: 41, anno: 2001,
pagine: 1007 - 1021
SICI:
0042-6989(200104)41:8<1007:TROSFI>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHROMATIC-DISCRIMINATION; CONE EXCITATION; ASSIMILATION; CONTRAST; SENSITIVITY; BACKGROUNDS; APPEARANCE; BRIGHTNESS; ADAPTATION; STIMULI;
Keywords:
assimilation; color contrast; induction; spatial frequency;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
57
Recensione:
Indirizzi per estratti:
Indirizzo: Smith, VC Univ Chicago, Ctr Visual Sci, 939 E 57Th St, Chicago, IL 60637 USA Univ Chicago 939 E 57Th St Chicago IL USA 60637 go, IL 60637 USA
Citazione:
V.C. Smith et al., "The role of spatial frequency in color induction", VISION RES, 41(8), 2001, pp. 1007-1021

Abstract

Color induction was measured for test and inducing chromaticities presented in spatial square-wave alternation, with spatial frequencies of 0.7, 4.0,6.0 and 9.0 cpd. Observers matched the test chromaticities to a rectangular matching field using haploscopic presentation. Data were collected and analyzed within the framework of a cone chromaticity space, allowing analysisof spatial frequency effects on post-receptoral spectral opponent pathways. Assimilation, a shift of chromaticity toward the inducing chromaticity, was found at the highest spatial frequency (9.0 cpd). Contrast, a shift of chromaticity away from the inducing chromaticity, occurred at the lowest spatial frequency (0.7 cpd). The spatial frequency at the transition point from assimilation to contrast was near 4 cpd, independent of the cone axis. Assimilation was unaffected by the presence of a neutral surround and could be described by a spread light model. Contrast was reduced in the presence of a neutral surround. The data suggested that retinal contrast signals are important determinants in the perception of chromatic contrast. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/04/20 alle ore 00:26:23