DocumentCode :
2082058
Title :
Illumination dependent refinement of multiresolution meshes
Author :
Klein, Reinhard ; Schilling, Andreas ; Strasser, Wolfgang
Author_Institution :
Wilhelm-Schickard-Inst., Tubingen Univ., Germany
fYear :
1998
fDate :
22-26 Jun 1998
Firstpage :
680
Lastpage :
687
Abstract :
State of the art multiresolution modeling allows to selectively refine a coarse mesh of an object on the visually important parts. In this way it is possible to render the geometry of a given object accurately with a minimum number of triangles. There are also approaches that use cones of normal vectors to perform illumination dependent selective refinement. This includes the correct rendering of highlights and transitions between lit and unlit areas of an object. The drawback of these approaches is that using only the normal cone for the detection gives only a very poor criteria to detect the problematic cases. Therefore, too much refinement has to be performed which in most cases prevents real time update rates between successive frames. The authors describe a new approach for better estimation of normal deviations between different levels of detail. This allows for accurate lighting with a minimum number of triangles
Keywords :
computational geometry; lighting; rendering (computer graphics); highlight rendering; illumination dependent refinement; illumination dependent selective refinement; lit area; multiresolution meshes; multiresolution modeling; normal vector cones; object geometry rendering; selective coarse mesh refinement; triangles; unlit area; visually important parts; Art; Electrical capacitance tomography; Inverse problems; Lighting; Postal services; Solid modeling; Visualization; World Wide Web;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Computer Graphics International, 1998. Proceedings
Conference_Location :
Hannover
Print_ISBN :
0-8186-8445-3
Type :
conf
DOI :
10.1109/CGI.1998.694326
Filename :
694326
Link To Document :
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