Adaptive real-time level-of-detail based rendering for polygonalmodels

摘要

We present an algorithm for performing adaptive real-timenlevel-of-detail-based rendering for triangulated polygonal models. Thensimplifications are dependent on viewing direction, lighting, andnvisibility and are performed by taking advantage of image-space,nobject-space, and frame-to-frame coherences. In contrast to thentraditional approaches of precomputing a fixed number of level-of-detailnrepresentations for a given object, our approach involves staticallyngenerating a continuous level-of-detail representation for the object.nThis representation is then used at run time to guide the selection ofnappropriate triangles for display. The list of displayed triangles isnupdated incrementally from one frame to the next. Our approach is moreneffective than the current level-of-detail-based rendering approachesnfor most scientific visualization applications, where there are anlimited number of highly complex objects that stay relatively close tonthe viewer. Our approach is applicable for scalar (such as distance fromnthe viewer) as well as vector (such as normal direction)nattributes