Visualization Issues in Virtual Environments: from Computer Graphics Techniques to Intentional Visualization.
Alexis Angelidis, Geoffroy Fouquier · 2001
Rendering eciently large virtual environment scenes composed of many elements, dynamic objects, and a highly moving viewpoint is a major issue. This paper focuses on the rst of the two viewing stage operations: required elements determination, the second being shading/ltering. We propose a classication, extending the existing computer graphic techniques toward display scalability requirements, that distinguishes two key points: keeping only required elements (culling), and keeping only required details (which includes traditional LODs). The mechanisms needed for display scalability are presented. Keywords: virtual environment, LOD, intentional display, semantics. 1