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ETC2: Texture Compression using Invalid Combinations
(The Eurographics Association, 2007)
We present a novel texture compression system for improved image quality. Building on the iPACKMAN/ETC method, bit combinations that are invalid in that system are used to allow for three additional decompression modes ...
Tight Frame Normal Map Compression
(The Eurographics Association, 2007)
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 ...