A page from the OpenDepot.org service

Jump to the start of the main contents

Toscani, Matteo and Valsecchi, Matteo and Gegenfurtner, Karl R. (2012) The Optimal Estimator of Objects’ Lightness. In: Predicting Perceptions: Proceedings of the 3rd International Conference on Appearance. Lulu Press, Edinburgh UK, pp. 167-169. ISBN 978-1-4716-6869-2

[img]
Preview
 PDF (The Optimal Estimator of Objects’ Lightness) - Published Version
Available under License Creative Commons Attribution Non-commercial No Derivatives.
Download (624Kb) | Preview

    Abstract

    We have recently shown that eye movements have an effect on lightness estimation of real objects. Observers tended to fixate points with above-average luminance and they overestimated the objects’ lightness. The matched lightness was higher when observers were forced to fixate a bright region of the object than when they fixated a darker region. In the present work we performed a simulation with a physically based rendering system, showing that this is an efficient and simple heuristic for the visual system to arrive at accurate and invariant judgments of lightness.

    Item Type: Book Section
    Uncontrolled Keywords: Lightness perception, albedo, estimator reliability, physically based rendering.
    Subjects: UNSPECIFIED
    Divisions: UNSPECIFIED
    Depositing User: Dr Stefano Padilla
    Date Deposited: 07 May 2012 14:05
    Last Modified: 08 May 2012 12:36
    URI: http://opendepot.org/id/eprint/1089

    Actions (login required)

    		 View Item