An Error Metric for Layered Environment Map Impostors
نویسندگان
چکیده
Impostors are image-based primitives commonly used to replace complex geometry in order to accelerate the rendering of large virtual environments. This paper describes a “layered impostor technique” used for representing distant scene-parts when seen from a bounded viewing region. A special layer placement is derived which bounds the geometric error introduced by parallaxes to a defined value. In combination with a special technique for image generation, a high-quality impostor representation without image artifacts can be obtained. CR Categories: I.3.3 [Computer Graphics]: Picture/Image Generation—Viewing Algorithms I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism—Virtual Reality
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