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Compressing color d...
Compressing color data for voxelized surface geometry
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- Dolonius, Dan, 1985 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Sintorn, Erik, 1980 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Kämpe, Viktor, 1986 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Assarsson, Ulf, 1972 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2019
- 2019
- English.
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In: IEEE Transactions on Visualization and Computer Graphics. - 1941-0506 .- 1077-2626. ; 25:2, s. 1270-1282
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Abstract
Subject headings
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- 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. In this extension of our I3D paper with the same title [1] , we first 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.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Annan teknik -- Mediateknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies -- Media Engineering (hsv//eng)
- NATURVETENSKAP -- Matematik -- Diskret matematik (hsv//swe)
- NATURAL SCIENCES -- Mathematics -- Discrete Mathematics (hsv//eng)
- NATURVETENSKAP -- Data- och informationsvetenskap -- Datorseende och robotik (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences -- Computer Vision and Robotics (hsv//eng)
Keyword
- BC
- space filling curve
- color compression
- PNG
- ASTC
- Voxel
- sparse voxel octree
- directed acyclic graph
- JPEG
Publication and Content Type
- art (subject category)
- ref (subject category)
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