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Horizon Map Capture
Author(s) -
Rushmeier Holly,
Balmelli Laurent,
Bernardini Fausto
Publication year - 2001
Publication title -
computer graphics forum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 120
eISSN - 1467-8659
pISSN - 0167-7055
DOI - 10.1111/1467-8659.00501
Subject(s) - computer science , shadow (psychology) , computer vision , horizon , encode , surface (topology) , computer graphics (images) , artificial intelligence , noise (video) , shadow mapping , image (mathematics) , geometry , mathematics , psychology , biochemistry , chemistry , psychotherapist , gene
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.