Tight Frame Normal Map Compression

Munkberg, Jacob; Olsson, Ola; Stroem, Jacob; Akenine-Moeller, Tomas

Tight Frame Normal Map Compression

Files

037-040.pdf (749.33 KB)

Date

2007

Authors

Munkberg, Jacob
Olsson, Ola
Stroem, Jacob
Akenine-Moeller, Tomas

Publisher

The Eurographics Association

Abstract

We present a new powerful and flexible fixed-rate normal map compression algorithm with higher quality than existing schemes on a test suite of normal maps. Our algorithm encodes a tight box with uniform normals inside the box, and in addition, a special mode is introduced for handling slowly varying normals. We also discuss several error measures needed to understand the qualities of different algorithms. We believe the high quality of our technique makes it a potential candidate for inclusion in OpenGL ES.

        @inproceedings{:10.2312/EGGH/EGGH07/037-040
,
booktitle = {SIGGRAPH/Eurographics Workshop on Graphics Hardware
},
editor = {Mark Segal and Timo Aila
},
title = {{Tight Frame Normal Map Compression
}},
author = {Munkberg, Jacob and 
Olsson, Ola and 
Stroem, Jacob and 
Akenine-Moeller, Tomas
},
year = {2007
},
publisher = {The Eurographics Association
},
ISSN = {1727-3471
},
ISBN = {978-3-905673-47-0
},
DOI = {/10.2312/EGGH/EGGH07/037-040
}
}