Inferred motion perception of light sources in 3D scenes is color-blind

Holly E. Gerhard, Laurence Maloney

Research output: Contribution to journalArticle

Abstract

In everyday scenes, the illuminant can vary spatially in chromaticity and luminance, and change over time (e.g. sunset). Such variation generates dramatic image effects too complex for any contemporary machine vision system to overcome, yet human observers are remarkably successful at inferring object properties separately from lighting, an ability linked with estimation and tracking of light field parameters. Which information does the visual system use to infer light field dynamics? Here, we specifically ask whether color contributes to inferred light source motion. Observers viewed 3D surfaces illuminated by an out-of-view moving collimated source (sun) and a diffuse source (sky). In half of the trials, the two sources differed in chromaticity, thereby providing more information about motion direction. Observers discriminated light motion direction above chance, and only the least sensitive observer benefited slightly from the added color information, suggesting that color plays only a very minor role for inferring light field dynamics.

Original languageEnglish (US)
Pages (from-to)98-100
Number of pages3
Journali-Perception
Volume4
Issue number2
DOIs
StatePublished - 2013

Fingerprint

Motion Perception
Light sources
Color
Light
Aptitude
Solar System
Lighting
Sun
Computer vision
Luminance
Direction compound

Keywords

  • 3D perception
  • Color constancy
  • Illumination perception
  • Material perception
  • Motion perception
  • Scene understanding

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Sensory Systems
  • Artificial Intelligence

Cite this

Inferred motion perception of light sources in 3D scenes is color-blind. / Gerhard, Holly E.; Maloney, Laurence.

In: i-Perception, Vol. 4, No. 2, 2013, p. 98-100.

Research output: Contribution to journalArticle

@article{0429a92c3a6d460bac7e22f4b9e82d59,
title = "Inferred motion perception of light sources in 3D scenes is color-blind",
abstract = "In everyday scenes, the illuminant can vary spatially in chromaticity and luminance, and change over time (e.g. sunset). Such variation generates dramatic image effects too complex for any contemporary machine vision system to overcome, yet human observers are remarkably successful at inferring object properties separately from lighting, an ability linked with estimation and tracking of light field parameters. Which information does the visual system use to infer light field dynamics? Here, we specifically ask whether color contributes to inferred light source motion. Observers viewed 3D surfaces illuminated by an out-of-view moving collimated source (sun) and a diffuse source (sky). In half of the trials, the two sources differed in chromaticity, thereby providing more information about motion direction. Observers discriminated light motion direction above chance, and only the least sensitive observer benefited slightly from the added color information, suggesting that color plays only a very minor role for inferring light field dynamics.",
keywords = "3D perception, Color constancy, Illumination perception, Material perception, Motion perception, Scene understanding",
author = "Gerhard, {Holly E.} and Laurence Maloney",
year = "2013",
doi = "10.1068/i0591sas",
language = "English (US)",
volume = "4",
pages = "98--100",
journal = "i-Perception",
issn = "2041-6695",
publisher = "Pion Ltd.",
number = "2",

}

TY - JOUR

T1 - Inferred motion perception of light sources in 3D scenes is color-blind

AU - Gerhard, Holly E.

AU - Maloney, Laurence

PY - 2013

Y1 - 2013

N2 - In everyday scenes, the illuminant can vary spatially in chromaticity and luminance, and change over time (e.g. sunset). Such variation generates dramatic image effects too complex for any contemporary machine vision system to overcome, yet human observers are remarkably successful at inferring object properties separately from lighting, an ability linked with estimation and tracking of light field parameters. Which information does the visual system use to infer light field dynamics? Here, we specifically ask whether color contributes to inferred light source motion. Observers viewed 3D surfaces illuminated by an out-of-view moving collimated source (sun) and a diffuse source (sky). In half of the trials, the two sources differed in chromaticity, thereby providing more information about motion direction. Observers discriminated light motion direction above chance, and only the least sensitive observer benefited slightly from the added color information, suggesting that color plays only a very minor role for inferring light field dynamics.

AB - In everyday scenes, the illuminant can vary spatially in chromaticity and luminance, and change over time (e.g. sunset). Such variation generates dramatic image effects too complex for any contemporary machine vision system to overcome, yet human observers are remarkably successful at inferring object properties separately from lighting, an ability linked with estimation and tracking of light field parameters. Which information does the visual system use to infer light field dynamics? Here, we specifically ask whether color contributes to inferred light source motion. Observers viewed 3D surfaces illuminated by an out-of-view moving collimated source (sun) and a diffuse source (sky). In half of the trials, the two sources differed in chromaticity, thereby providing more information about motion direction. Observers discriminated light motion direction above chance, and only the least sensitive observer benefited slightly from the added color information, suggesting that color plays only a very minor role for inferring light field dynamics.

KW - 3D perception

KW - Color constancy

KW - Illumination perception

KW - Material perception

KW - Motion perception

KW - Scene understanding

UR - http://www.scopus.com/inward/record.url?scp=84875793254&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84875793254&partnerID=8YFLogxK

U2 - 10.1068/i0591sas

DO - 10.1068/i0591sas

M3 - Article

C2 - 23755354

AN - SCOPUS:84875793254

VL - 4

SP - 98

EP - 100

JO - i-Perception

JF - i-Perception

SN - 2041-6695

IS - 2

ER -