The luminance misattribution in lightness perception

Hdl Handle:
http://hdl.handle.net/10149/100139
Title:
The luminance misattribution in lightness perception
Authors:
Soranzo, A. (Alessandro); Galmonte, A. (Alessandra); Agostini, T. (Tiziano)
Affiliation:
University of Teesside. School of Social Sciences and Law.
Citation:
Soranzo, A., Galmonte, A. and Agostini, T. (2010) 'The luminance misattribution in lightness perception', Psihologija, 43 (1), pp.33-45.
Publisher:
Drustvo Psihologa Srbije
Journal:
Psihologija
Issue Date:
2010
URI:
http://hdl.handle.net/10149/100139
DOI:
10.2298/PSI1001033S
Abstract:
The Simultaneous Lightness Contrast is the condition whereby a grey patch on a dark background appears lighter than a physically identical patch on a light background. This is probably the most studied phenomenon in lightness perception. Although this phenomenon has been explained in terms of low-level mechanisms, convincing evidences supporting a high-level interpretation have been presented over the last decades. Two are the main high-level interpretations. On one side, the layer approach claims that the visual system splits the luminance into separate overlapping layers, corresponding to separate physical contributions; whilst on the other side, the framework approach maintains that the visual system groups the luminance within a set of contiguous frameworks. One of the biggest weaknesses of the layer approach is that it cannot account properly for errors in lightness perception (Gilchrist, 2005 Current Biology, 15(9), 330-332). To extend the multiple layers interpretation to errors in lightness perception, in this study we show that the perceptual lightness difference among equal patches on different backgrounds increases even when the luminance contrast with their backgrounds shrinks. Specifically, it is shown that the perceptual lightness difference among equal patches on different backgrounds intensifies when a small-sized semi-transparent surface is interposed between the patches and the backgrounds. This result indicates that in these conditions the visual system besides decomposing the luminance into separate layers also becomes liable for a luminance misattribution. It is proposed that the photometric and geometric relationships among the luminance edges in the image might account for this misattribution.
Type:
Article
Language:
en
Keywords:
luminance misattribution; framework schema; multilayer schema; luminance edges
ISSN:
0048-5705
Rights:
No publisher policy information on http://www.sherpa.ac.uk/romeo/ [Accessed 02/06/2010]
Citation Count:
0 [Web of Science, 02/06/2010]

Full metadata record

DC FieldValue Language
dc.contributor.authorSoranzo, A. (Alessandro)en
dc.contributor.authorGalmonte, A. (Alessandra)en
dc.contributor.authorAgostini, T. (Tiziano)en
dc.date.accessioned2010-06-02T11:24:12Z-
dc.date.available2010-06-02T11:24:12Z-
dc.date.issued2010-
dc.identifier.citationPsihologija; 43(1):33-45en
dc.identifier.issn0048-5705-
dc.identifier.doi10.2298/PSI1001033S-
dc.identifier.urihttp://hdl.handle.net/10149/100139-
dc.description.abstractThe Simultaneous Lightness Contrast is the condition whereby a grey patch on a dark background appears lighter than a physically identical patch on a light background. This is probably the most studied phenomenon in lightness perception. Although this phenomenon has been explained in terms of low-level mechanisms, convincing evidences supporting a high-level interpretation have been presented over the last decades. Two are the main high-level interpretations. On one side, the layer approach claims that the visual system splits the luminance into separate overlapping layers, corresponding to separate physical contributions; whilst on the other side, the framework approach maintains that the visual system groups the luminance within a set of contiguous frameworks. One of the biggest weaknesses of the layer approach is that it cannot account properly for errors in lightness perception (Gilchrist, 2005 Current Biology, 15(9), 330-332). To extend the multiple layers interpretation to errors in lightness perception, in this study we show that the perceptual lightness difference among equal patches on different backgrounds increases even when the luminance contrast with their backgrounds shrinks. Specifically, it is shown that the perceptual lightness difference among equal patches on different backgrounds intensifies when a small-sized semi-transparent surface is interposed between the patches and the backgrounds. This result indicates that in these conditions the visual system besides decomposing the luminance into separate layers also becomes liable for a luminance misattribution. It is proposed that the photometric and geometric relationships among the luminance edges in the image might account for this misattribution.en
dc.language.isoenen
dc.publisherDrustvo Psihologa Srbijeen
dc.rightsNo publisher policy information on http://www.sherpa.ac.uk/romeo/ [Accessed 02/06/2010]en
dc.subjectluminance misattributionen
dc.subjectframework schemaen
dc.subjectmultilayer schemaen
dc.subjectluminance edgesen
dc.titleThe luminance misattribution in lightness perceptionen
dc.typeArticleen
dc.contributor.departmentUniversity of Teesside. School of Social Sciences and Law.en
dc.identifier.journalPsihologijaen
ref.citationcount0 [Web of Science, 02/06/2010]en
or.citation.harvardSoranzo, A., Galmonte, A. and Agostini, T. (2010) 'The luminance misattribution in lightness perception', Psihologija, 43 (1), pp.33-45.-
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