A Novel Approach to Compress Reflection Functions Based on PCA

Björn Olsson
Linköping University, Sweden

Anders Hast
Linköping University, Sweden

Anders Ynnerman
Linköping University, Sweden

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Ingår i: SIGRAD 2005 The Annual SIGRAD Conference Special Theme - Mobile Graphics

Linköping Electronic Conference Proceedings 16:10, s. 51-56

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Publicerad: 2005-11-23


ISSN: 1650-3686 (tryckt), 1650-3740 (online)


In many applications it is important to perform image-based relighting. That is; to synthesize a scene in various lighting conditions without explicitely rerendering the image. This paper proposes an efficient compression method; which after a precomputing step allows an efficient re-rendering of the scene. The best results are achieved on scenes with a limited number of materials; but it may also be used on arbitrary scenes. In this work images of a static scene are generated and the method is exemplified using a dataset of ray-traced images.

CR Categories: I.3.3 [Computer graphics]: Picture/Image Generation; I.3.7 [Computer graphics]: Three-Dimensional


BRDF; PCA; image-based relighting


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