Article | Proceedings of SIGRAD 2011. Evaluations of Graphics and Visualization — Efficiency; Usefulness; Accessibility; Usability; November 17-18; 2011; KTH; Stockholm; Sweden | Geometry Independent Surface Light Fields for Real Time Rendering of Precomputed Global Illumination

Title:
Geometry Independent Surface Light Fields for Real Time Rendering of Precomputed Global Illumination
Author:
E. Miandijy: Linkoping University, Sweden J. Kronander: Linkoping University, Sweden J. Unger: Linkoping University, Sweden
Download:
Full text (pdf)
Year:
2011
Conference:
Proceedings of SIGRAD 2011. Evaluations of Graphics and Visualization — Efficiency; Usefulness; Accessibility; Usability; November 17-18; 2011; KTH; Stockholm; Sweden
Issue:
065
Article no.:
005
Pages:
27-34
No. of pages:
8
Publication type:
Abstract and Fulltext
Published:
2011-11-21
ISBN:
978-91-7393-008-6
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press; Linköpings universitet


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We present a framework for generating; compressing and rendering of Surface Light Field (SLF) data. Our method is based on radiance data generated using physically based rendering methods. Thus the SLF data is generated directly instead of re-sampling digital photographs. Our SLF representation decouples spatial resolution from geometric complexity. We achieve this by uniform sampling of spatial dimension of the SLF function. For compression; we use Clustered Principal Component Analysis (CPCA). The SLF matrix is first clustered to low frequency groups of points across all directions. Then we apply PCA to each cluster. The clustering ensures that the withincluster frequency of data is low; allowing for projection using a few principal components. Finally we reconstruct the CPCA encoded data using an efficient rendering algorithm. Our reconstruction technique ensures seamless reconstruction of discrete SLF data. We applied our rendering method for fast; high quality off-line rendering and real-time illumination of static scenes. The proposed framework is not limited to complexity of materials or light sources; enabling us to render high quality images describing the full global illumination in a scene.

Proceedings of SIGRAD 2011. Evaluations of Graphics and Visualization — Efficiency; Usefulness; Accessibility; Usability; November 17-18; 2011; KTH; Stockholm; Sweden

Author:
E. Miandijy, J. Kronander, J. Unger
Title:
Geometry Independent Surface Light Fields for Real Time Rendering of Precomputed Global Illumination
References:

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Proceedings of SIGRAD 2011. Evaluations of Graphics and Visualization — Efficiency; Usefulness; Accessibility; Usability; November 17-18; 2011; KTH; Stockholm; Sweden

Author:
E. Miandijy, J. Kronander, J. Unger
Title:
Geometry Independent Surface Light Fields for Real Time Rendering of Precomputed Global Illumination
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