Title: Expressive volume rendering
Authors: Rheingans, Penny
Citation: Journal of WSCG. 2004, vol. 12, no. 1-3, p. 7-10.
Issue Date: 2004
Publisher: UNION Agency
Document type: článek
URI: http://wscg.zcu.cz/wscg2004/Papers_2004_Full/Rheingans.pdf
ISSN: 1213-6972
Keywords: objemové vykreslování;vědecká ilustrace;nefotorealistické vykreslování;vizualizace dat
Keywords in different language: volume rendering;scientific illustration;non-photorealistic rendering;data visualization
Abstract: Accurately and automatically conveying the structure of a volume model is a problem not fully solved by existing volume rendering approaches. Physics-based volume rendering approaches create images that may match the appearance of translucent materials in nature, but may not embody important structural details. Transfer function approaches allow flexible design of the volume appearance, but generally require substantial hand tuning for each new data set in order to be effective. We have introduced the volume illustration approach, combining the familiarity of a physics-based illumination model with the ability to enhance important features using non-photorealistic rendering techniques. Since features to be enhanced are defined on the basis of higherorder model characteristics rather than volume sample value, the application of volume illustration techniques requires less manual tuning than the design of a good transfer function. Volume illustration provides a flexible unified framework for enhancing structural perception of volume models through the amplification of features, the addition of illumination effects, and the application of procedural textures. Volume illustration works on both presampled and procedurally defined volume models, enabling a range of image styles from practical technical illustrations to more abstract painterly effects.
Rights: © UNION Agency
Appears in Collections:Volume 12, number 1-3 (2004)

Files in This Item:
File Description SizeFormat 
Rheingans.pdf193,57 kBAdobe PDFView/Open

Please use this identifier to cite or link to this item: http://hdl.handle.net/11025/1692

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.