Vertex-Blend Attribute Compression

Kuth, Bastian; Meyer, Quirin

Vertex-Blend Attribute Compression

Files

043-052.pdf (6.5 MB)

Date

2021

Authors

Kuth, Bastian
Meyer, Quirin

Publisher

The Eurographics Association

Abstract

Skeleton-based animations require per-vertex attributes called vertex-blend attributes. They consist of a weight tuple and a bone index tuple. With meshes becoming more complex, vertex-blend attributes call for compression. However, no technique exists that exploits their special properties. To this end, we propose a novel and optimal weight compression method called Optimal Simplex Sampling and a novel bone index compression. For our test models, we compress bone index tuples between 2.3:1 and 3.5:1 and weight tuples between 1.6:1 and 2.5:1 while being visually lossless. We show that our representations can speed rendering and reduces GPU memory requirements over uncompressed representations with a similar error. Further, our representations compress well with general-purpose codecs making them suitable for offline-storage and streaming.

        @inproceedings{10.2312:hpg.20211282
,
booktitle = {High-Performance Graphics - Symposium Papers
},
editor = {Binder, Nikolaus and Ritschel, Tobias
},
title = {{Vertex-Blend Attribute Compression
}},
author = {Kuth, Bastian and 
Meyer, Quirin
},
year = {2021
},
publisher = {The Eurographics Association
},
ISSN = {2079-8687
},
ISBN = {978-3-03868-156-4
},
DOI = {10.2312/hpg.20211282
}
}