NDLI: Compressing color data for voxelized surface geometry

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Compressing color data for voxelized surface geometry

Content Provider	ACM Digital Library
Author	Kämpe, Viktor Assarsson, Ulf Dolonius, Dan Sintorn, Erik
Abstract	We explore the problem of decoupling color information from geometry in large scenes of voxelized surfaces and of compressing the array of colors without introducing disturbing artifacts. First, we present a novel method for connecting each node in a sparse voxel DAG to its corresponding colors in a separate 1D array of colors, with very little additional information stored to the DAG. Then, we show that by mapping the 1D array of colors onto a 2D image using a space-filling curve, we can achieve high compression rates and good quality using conventional, modern, hardware-accelerated texture compression formats such as ASTC or BC7. We additionally explore whether this method can be used to compress voxel colors for off-line storage and network transmission using conventional off-line compression formats such as JPG and JPG2K. For real-time decompression, we suggest a novel variable bitrate block encoding that consistently outperforms previous work, often achieving two times the compression at equal quality.
Starting Page	1
Ending Page	10
Page Count	10
File Format	PDF
ISBN	9781450348867
DOI	10.1145/3023368.3023381
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2017-02-25
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Compression Voxelization
Content Type	Text
Resource Type	Article

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