title: Interactive display of isosurfaces with global illumination.
abstract: In many applications, volumetric data sets are examined by displaying isosurfaces, surfaces where the data, or some function of the data, takes on a given value. Interactive applications typically use local lighting models to render such surfaces. This work introduces a method to precompute or lazily compute global illumination to improve interactive isosurface renderings. The precomputed illumination resides in a separate volume and includes direct light, shadows, and interreflections. Using this volume, interactive globally illuminated renderings of isosurfaces become feasible while still allowing dynamic manipulation of lighting, viewpoint and isovalue.
authors.affiliation: The University of Iowa, Iowa City 52242-1419, USA. cwyman@cs.uiowa.edu
authors.forename: Chris
authors.initials: C
authors.lastname: Wyman
authors.forename: Steven
authors.initials: S
authors.lastname: Parker
authors.forename: Peter
authors.initials: P
authors.lastname: Shirley
authors.forename: Charles
authors.initials: C
authors.lastname: Hansen
mesh_terms: D000465:Algorithms; D003196:Computer Graphics; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D016247:Information Storage and Retrieval / Q000379:methods; D008029:Lighting; D014584:User-Computer Interface