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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Published in | Computer graphics forum Vol. 20; no. 3; pp. 85 - 94 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Oxford, UK and Boston, USA
Blackwell Publishers Ltd
01.09.2001
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Online Access | Get full text |
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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. |
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Bibliography: | istex:F5447D8E8F48F33E2A4872EFFFBD631ADB0A1049 ark:/67375/WNG-L87H4JF9-N ArticleID:CGF501 |
ISSN: | 0167-7055 1467-8659 |
DOI: | 10.1111/1467-8659.00501 |