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Colour perception in a virtual scene

Dam, R. (2005) Colour perception in a virtual scene. Master's Thesis / Essay, Computing Science.

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Why do we always perceive the colour of grass as green, even under changing daylight conditions? From a physical point of view, grass is not always green. The light illuminating the grass varies throughout the day due to atmospheric wavelength scattering and refraction. The ability to perceive constant colours under changing illumination conditions is called colour constancy. An important unanswered question regarding colour constancy concerns the role of binocular information. Binocular disparity facilitates three-dimensional (3-D) object perception, and, in principle, may perform a role in colour constancy. In this master thesis, we focus on the influence of binocular information in the perception of surface colour in a virtual 3-D scene. In particular, we examine whether the addition of binocular disparity cues may modulate the extent to which nearby surfaces within a two-dimensional (2- D) projection plane of the virtual scene affect the colour of a target surface (colour induction, a phenomenon closely related to colour constancy). Consistent with previous studies, we find some evidence to support the notion that colour induction is strongest when object surfaces appear in the same depth plane. We discuss technical problems associated with developing the virtual scene and suggest improved experimental designs for investigating additional questions related to colour constancy and depth perception.

Item Type: Thesis (Master's Thesis / Essay)
Degree programme: Computing Science
Thesis type: Master's Thesis / Essay
Language: English
Date Deposited: 15 Feb 2018 07:30
Last Modified: 15 Feb 2018 07:30

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