Dynamic Scene Graph: Enabling Scaling, Positioning, and Navigation in the Universe. (4th July 2017)
- Record Type:
- Journal Article
- Title:
- Dynamic Scene Graph: Enabling Scaling, Positioning, and Navigation in the Universe. (4th July 2017)
- Main Title:
- Dynamic Scene Graph: Enabling Scaling, Positioning, and Navigation in the Universe
- Authors:
- Axelsson, Emil
Costa, Jonathas
Silva, Cláudio
Emmart, Carter
Bock, Alexander
Ynnerman, Anders - Abstract:
- Abstract: In this work, we address the challenge of seamlessly visualizing astronomical data exhibiting huge scale differences in distance, size, and resolution. One of the difficulties is accurate, fast, and dynamic positioning and navigation to enable scaling over orders of magnitude, far beyond the precision of floating point arithmetic. To this end we propose a method that utilizes a dynamically assigned frame of reference to provide the highest possible numerical precision for all salient objects in a scene graph. This makes it possible to smoothly navigate and interactively render, for example, surface structures on Mars and the Milky Way simultaneously. Our work is based on an analysis of tracking and quantification of the propagation of precision errors through the computer graphics pipeline using interval arithmetic. Furthermore, we identify sources of precision degradation, leading to incorrect object positions in screen‐space and z‐fighting. Our proposed method operates without near and far planes while maintaining high depth precision through the use of floating point depth buffers. By providing interoperability with order‐independent transparency algorithms, direct volume rendering, and stereoscopy, our approach is well suited for scientific visualization. We provide the mathematical background, a thorough description of the method, and a reference implementation.
- Is Part Of:
- Computer graphics forum. Volume 36:Number 3(2017)
- Journal:
- Computer graphics forum
- Issue:
- Volume 36:Number 3(2017)
- Issue Display:
- Volume 36, Issue 3 (2017)
- Year:
- 2017
- Volume:
- 36
- Issue:
- 3
- Issue Sort Value:
- 2017-0036-0003-0000
- Page Start:
- 459
- Page End:
- 468
- Publication Date:
- 2017-07-04
- Subjects:
- Computer graphics -- Periodicals
006.605 - Journal URLs:
- http://onlinelibrary.wiley.com/doi/10.1111/j.1467-8659.1982.tb00001.x/abstract ↗
http://onlinelibrary.wiley.com/ ↗
http://www.blackwell-synergy.com/servlet/useragent?func=showIssues&code=cgf ↗ - DOI:
- 10.1111/cgf.13202 ↗
- Languages:
- English
- ISSNs:
- 0167-7055
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 3393.982000
British Library DSC - BLDSS-3PM
British Library STI - ELD Digital store - Ingest File:
- 14216.xml