Light transport consistent scene simplification within graphics display system

摘要

Method including casting a first plurality of rays towards an original 3-D scene comprising objects with object surfaces. Method also includes constructing a simplified representation of the original 3-D scene and adjusting the simplified representation to be consistent with the original 3-D scene. Simplified representation is adjusted by using known rays and object surface intersections obtained from the casting, to produce an adjusted simplified representation. Method further includes steps for rendering a high quality image: casting a second plurality of rays toward the adjusted simplified representation and testing the second plurality of rays for points of intersection with the object surfaces within the adjusted simplified representation, estimating incoming light within the adjusted simplified representation at the points of intersection with the object surfaces, examining material properties of the object surfaces, and calculating a color and light intensity for a plurality of pixels associated with the second plurality of rays.

主权项

1. A computer graphics implemented method comprising:
casting a first plurality of rays towards an original three dimensional scene comprising objects with object surfaces wherein said first plurality of rays may be recast within said original three dimensional scene; constructing a simplified representation of said original three dimensional scene, wherein said constructing further comprises:
using a k-nearest neighbor search to adapt to a local density of endpoints for said first plurality of rays;deriving a radius for each of said first plurality of rays; andcreating an approximation of said original three dimensional scene in terms of a plurality of splats on tangent planes of said endpoints; and adjusting said simplified representation to be consistent with said original three dimensional scene by using known rays and object surface intersections obtained from said casting, to produce an adjusted simplified representation, wherein said adjusting further comprises:
tracing said first plurality of rays against said simplified representation; andshrinking said plurality of splats that intersect with said first plurality of rays to produce said adjusted simplified representation.