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Naturally glossy: gloss perception, illumination statistics and tone mapping

Naturally glossy: gloss perception, illumination statistics and tone mapping
Naturally glossy: gloss perception, illumination statistics and tone mapping
Recognizing materials and understanding their properties is very useful – perhaps critical – in daily life as we encounter objects and plan our interactions with them. Visually derived estimates of material properties guide where and with what force we grasp an object. However, the estimation of material properties, such as glossiness, is a classic ill-posed problem. Image cues that we rely on to estimate gloss are also affected by shape, illumination and, in visual displays, tone-mapping. Here, we focus on the latter two. We define some commonalities present in the structure of natural illumination, and determine whether manipulation of these natural ‘signatures’ impedes gloss constancy.
We manipulate the illumination field to violate statistical regularities of natural illumination, such that light comes from below, or the luminance distribution is no longer skewed. These manipulations result in errors in perceived gloss. Similarly, tone mapping has a dramatic effect on perceived gloss. However, when objects are viewed against an informative (rather than plain gray) background that reflects these manipulations, there are some improvements to gloss constancy: in particular, observers are far less susceptible to the effects of tone mapping when judging gloss. We suggest that observers are sensitive to some very simple statistics of the environment when judging gloss.
1534-7362
Adams, Wendy
25685aaa-fc54-4d25-8d65-f35f4c5ab688
Kucukoglu, Gizem
08a48479-7e43-46fd-b977-53c2927c6beb
Landy, Michael
ac5390f1-57d7-4668-9921-ce4e73f2a24b
Mantiuk, Rafal
f1d447d8-999f-4610-9c7e-e57c2b4dd55a
Adams, Wendy
25685aaa-fc54-4d25-8d65-f35f4c5ab688
Kucukoglu, Gizem
08a48479-7e43-46fd-b977-53c2927c6beb
Landy, Michael
ac5390f1-57d7-4668-9921-ce4e73f2a24b
Mantiuk, Rafal
f1d447d8-999f-4610-9c7e-e57c2b4dd55a

Adams, Wendy, Kucukoglu, Gizem, Landy, Michael and Mantiuk, Rafal (2018) Naturally glossy: gloss perception, illumination statistics and tone mapping. Journal of Vision, 18 (4). (doi:10.1167/18.13.4).

Record type: Article

Abstract

Recognizing materials and understanding their properties is very useful – perhaps critical – in daily life as we encounter objects and plan our interactions with them. Visually derived estimates of material properties guide where and with what force we grasp an object. However, the estimation of material properties, such as glossiness, is a classic ill-posed problem. Image cues that we rely on to estimate gloss are also affected by shape, illumination and, in visual displays, tone-mapping. Here, we focus on the latter two. We define some commonalities present in the structure of natural illumination, and determine whether manipulation of these natural ‘signatures’ impedes gloss constancy.
We manipulate the illumination field to violate statistical regularities of natural illumination, such that light comes from below, or the luminance distribution is no longer skewed. These manipulations result in errors in perceived gloss. Similarly, tone mapping has a dramatic effect on perceived gloss. However, when objects are viewed against an informative (rather than plain gray) background that reflects these manipulations, there are some improvements to gloss constancy: in particular, observers are far less susceptible to the effects of tone mapping when judging gloss. We suggest that observers are sensitive to some very simple statistics of the environment when judging gloss.

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GlossContext - Accepted Manuscript
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Accepted/In Press date: 26 September 2018
e-pub ahead of print date: 3 December 2018

Identifiers

Local EPrints ID: 423691
URI: https://eprints.soton.ac.uk/id/eprint/423691
ISSN: 1534-7362
PURE UUID: 16e98f7e-718c-46be-ab52-c19095b8663d
ORCID for Wendy Adams: ORCID iD orcid.org/0000-0002-5832-1056

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Date deposited: 27 Sep 2018 16:30
Last modified: 14 Mar 2019 01:43

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