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Volume Raycasting Sampling Revisited
Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering. Linköping University, Center for Medical Image Science and Visualization (CMIV).ORCID iD: 0000-0002-5220-633X
Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0003-1511-5006
Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0001-7285-0483
2019 (English)Conference paper, Published paper (Refereed)
Abstract [en]

We investigate the effects of practical sample placement strategies when solving the volume rendering integral for interactive volume raycasting with fixed step lengths for each ray. Different sample placements have been used in previous work but they have not been compared with respect to their correctness or visual quality. In this work, the different sampling strategies are presented visually and practical implementation details are provided using algorithmic descriptions of each strategy. A thorough analysis based on comparisons with analytic solutions and real-world data shows that visual artifacts, especially at volume borders, can appear if samples are not placed correctly. Our analysis and comparison results in a sample placement strategy that easily can be integrated into existing implementations, has no impact on performance, and decreases visual artifacts of the rendered image compared to other fixed step size sample strategies.

Place, publisher, year, edition, pages
2019.
Keywords [en]
Volume Rendering, Raytracing, Rasterization
National Category
Computer Sciences
Identifiers
URN: urn:nbn:se:liu:diva-178612OAI: oai:DiVA.org:liu-178612DiVA, id: diva2:1587279
Conference
Leipzig symposium on Visualization In Applications (LEVIA)
Funder
ELLIIT - The Linköping‐Lund Initiative on IT and Mobile CommunicationsSwedish e‐Science Research CenterVinnova, 2014-04257Available from: 2021-08-24 Created: 2021-08-24 Last updated: 2022-12-08

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Steneteg, PeterJönsson, DanielFalk, MartinHotz, Ingrid

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Steneteg, PeterJönsson, DanielFalk, MartinHotz, Ingrid
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CiteExportLink to record
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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
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  • Other locale
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Output format
  • html
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