Real‐Time Linear BRDF MIP‐Mapping
We present a new technique to jointly MIP‐map BRDF and normal maps. Starting with generating an instant BRDF map, our technique builds its MIP‐mapped versions based on a highly efficient algorithm that interpolates von Mises‐Fisher (vMF) distributions. In our BRDF MIP‐maps, each pixel stores a vMF m...
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| Published in | Computer graphics forum Vol. 36; no. 4; pp. 27 - 34 |
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| Main Authors | , , , |
| Format | Journal Article |
| Language | English |
| Published |
Oxford
Blackwell Publishing Ltd
01.07.2017
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0167-7055 1467-8659 |
| DOI | 10.1111/cgf.13221 |
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| Abstract | We present a new technique to jointly MIP‐map BRDF and normal maps. Starting with generating an instant BRDF map, our technique builds its MIP‐mapped versions based on a highly efficient algorithm that interpolates von Mises‐Fisher (vMF) distributions. In our BRDF MIP‐maps, each pixel stores a vMF mixture approximating the average of all BRDF lobes from the finest level. Our method is capable of jointly MIP‐mapping BRDF and normal maps, even with high‐frequency variations, at real‐time while preserving high‐quality reflectance details. Further, it is very fast, easy to implement, and requires no precomputation. |
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| AbstractList | We present a new technique to jointly MIP‐map BRDF and normal maps. Starting with generating an instant BRDF map, our technique builds its MIP‐mapped versions based on a highly efficient algorithm that interpolates von Mises‐Fisher (vMF) distributions. In our BRDF MIP‐maps, each pixel stores a vMF mixture approximating the average of all BRDF lobes from the finest level. Our method is capable of jointly MIP‐mapping BRDF and normal maps, even with high‐frequency variations, at real‐time while preserving high‐quality reflectance details. Further, it is very fast, easy to implement, and requires no precomputation. |
| Author | Zhao, Shuang Bao, Hujun Xu, Chao Wang, Rui |
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| Cites_doi | 10.1145/2980179.2980228 10.1145/1276377.1276412 10.1145/15886.15902 10.1145/964967.801126 10.1111/cgf.12745 10.1145/2897824.2925915 10.1007/978-3-7091-6303-0_17 10.1109/TVCG.2007.70439 10.1080/2151237X.2005.10129203 10.1145/2508363.2508422 10.1364/JOSA.57.001105 10.1145/1618452.1618479 10.1109/TVCG.2011.81 10.1145/2601097.2601155 10.1145/965141.563893 10.1145/1730804.1730834 10.1109/TVCG.2014.2346324 |
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| Copyright | 2017 The Author(s) Computer Graphics Forum © 2017 The Eurographics Association and John Wiley & Sons Ltd. Published by John Wiley & Sons Ltd. 2017 The Eurographics Association and John Wiley & Sons Ltd. |
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| Snippet | We present a new technique to jointly MIP‐map BRDF and normal maps. Starting with generating an instant BRDF map, our technique builds its MIP‐mapped versions... We present a new technique to jointly MIP-map BRDF and normal maps. Starting with generating an instant BRDF map, our technique builds its MIP-mapped versions... |
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| SubjectTerms | Approximation Categories and Subject Descriptors (according to ACM CCS) I.3.7 [Computer Graphics]: Three‐Dimensional Graphics and Realism—Color, shading, shadowing, and texture Lobes Mapping Real time Reflectance Stores |
| Title | Real‐Time Linear BRDF MIP‐Mapping |
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