About: Parallel BTF Compression with Multi-Level Vector Quantization in OpenCL

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://diglib.eg.org/EG/DL/PE/PG/PG2014short/131-134.pdf.abstract.pdf
Description	Bidirectional Texture Function (BTF) as an effective visual fidelity representation of surface appearance is becoming more and more widely used. In this paper we report on contributions to BTF data compression for multi-level vector quantization. We describe novel decompositions that improve the compression ratio by 15% in comparison with the original method, without loss of visual quality. Further, we show how for offline storage the compression ratio can be increased by 33% in total by Huffman coding. We also show that efficient parallelization of the vector quantization algorithm in OpenCL can reduce the compression time by factor of 9 on a GPU. The results for the new compression algorithm are shown on six low dynamic range BTFs and four high dynamic range publicly available BTF samples. Our method allows for real time synthesis on a GPU. Bidirectional Texture Function (BTF) as an effective visual fidelity representation of surface appearance is becoming more and more widely used. In this paper we report on contributions to BTF data compression for multi-level vector quantization. We describe novel decompositions that improve the compression ratio by 15% in comparison with the original method, without loss of visual quality. Further, we show how for offline storage the compression ratio can be increased by 33% in total by Huffman coding. We also show that efficient parallelization of the vector quantization algorithm in OpenCL can reduce the compression time by factor of 9 on a GPU. The results for the new compression algorithm are shown on six low dynamic range BTFs and four high dynamic range publicly available BTF samples. Our method allows for real time synthesis on a GPU. (en)
Title	Parallel BTF Compression with Multi-Level Vector Quantization in OpenCL Parallel BTF Compression with Multi-Level Vector Quantization in OpenCL (en)
skos:prefLabel	Parallel BTF Compression with Multi-Level Vector Quantization in OpenCL Parallel BTF Compression with Multi-Level Vector Quantization in OpenCL (en)
skos:notation	RIV/68407700:21230/14:00221435!RIV15-MSM-21230___
http://linked.open...avai/riv/aktivita	P S
http://linked.open...avai/riv/aktivity	P(GA14-19213S), P(GAP202/12/2413), S
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Havran, Vlastimil Egert, Petr
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	České vysoké učení technické v Praze / Fakulta elektrotechnická
http://linked.open...dnocenehoVysledku	35698
http://linked.open...ai/riv/idVysledku	RIV/68407700:21230/14:00221435
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	compression; bidirectional texture function (en)
http://linked.open.../riv/klicoveSlovo	compression bidirectional texture function
http://linked.open...ontrolniKodProRIV	[7193F7D51651]
http://linked.open...v/mistoKonaniAkce	Seoul
http://linked.open...i/riv/mistoVydani	Aire-la-Ville
http://linked.open...i/riv/nazevZdroje	Proceedings of Pacific Graphics 2014
http://linked.open...in/vavai/riv/obor	IN
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Optimal Algorithms for Image Synthesis On-site acquisition, compression and rendering of spatially varying surface reflectances
http://linked.open...UplatneniVysledku	2014
http://linked.open...iv/tvurceVysledku	Havran, Vlastimil Egert, Petr
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2014-10-08 (xsd:date)
number of pages	4 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Eurographics Association
https://schema.org/isbn	978-3-905674-73-6
http://localhost/t...ganizacniJednotka	21230

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