Horizon Map Capture

We present a method for computing horizon maps from captured images of a bumpy surface. 1Horizon maps encode surface self‐shadowing effects, and can be used with bump or normals maps to realistically render surfaces with small height perturbations. The method does not rely on complete surface recons...

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Bibliographic Details
Published inComputer graphics forum Vol. 20; no. 3; pp. 85 - 94
Main Authors Rushmeier, Holly, Balmelli, Laurent, Bernardini, Fausto
Format Journal Article
LanguageEnglish
Published Oxford, UK and Boston, USA Blackwell Publishers Ltd 01.09.2001
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Summary:We present a method for computing horizon maps from captured images of a bumpy surface. 1Horizon maps encode surface self‐shadowing effects, and can be used with bump or normals maps to realistically render surfaces with small height perturbations. The method does not rely on complete surface reconstruction, and requires only eight captured images as input. In this paper we discuss how shadow information is extrapolated from the eight captured images to compute the horizon map. Our implementation accounts for the noise and uncertainties in physically acquired data.
Bibliography:istex:F5447D8E8F48F33E2A4872EFFFBD631ADB0A1049
ark:/67375/WNG-L87H4JF9-N
ArticleID:CGF501
ISSN:0167-7055
1467-8659
DOI:10.1111/1467-8659.00501