Lovell, P. George and Spencer, Lucy J. and Bloj, Marina and Harris, Julie M. (2012) Learning a 3-D Visual Light Field: Effects of Exploration on Lightness Constancy. In: Predicting Perceptions: Proceedings of the 3rd International Conference on Appearance. Lulu Press, Edinburgh UK, pp. 155-157. ISBN 978-1-4716-6869-2
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The pattern of light across a scene is determined by the lighting, the material properties of objects in the scene, and the three- dimensional (3-D) scene structure. The problem of determining the material properties of an object is therefore a complex one. To do this correctly the relationship between 3-D scene structure and lighting must be understood by the viewer. In this paper we describe experiments which evaluate how exploration of the lightfield  within the scene aids the estimation of surface lightness (albedo). We find that the experience of viewing a block moving throughout the 3D scene - illustrating the variations in lightfield – results in lightness constancy, i.e. viewers are able to estimate surface albedo under varying illumination. Exploration of the lightfield facilitated albedo recovery as opposed to simple brightness matching.
|Item Type:||Book Section|
|Uncontrolled Keywords:||Lightness perception, depth perception, stereopsis.|
|Depositing User:||Dr Stefano Padilla|
|Date Deposited:||07 May 2012 13:40|
|Last Modified:||08 May 2012 12:34|
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