information

book chapter

sketch

abstract

High-fidelity real-time visualization of surfaces under high-dynamic-range (HDR) image-based illumination provides an invaluable resource for various computer graphics applications. Material design, lighting design, architectural previsualization, and gaming are just a few such applications. Environment map prefiltering techniques, plus other frequency space solutions using wavelets or spherical harmonics, provide real-time visualizations. However, their use may be too cumbersome because they require a hefty amount of precomputation or a sizable code base for glossy surface reflections. As an alternative, we present a technique for image-based lighting of glossy objects using a Monte Carlo quadrature that requires minimal precomputation and operates within a single GPU shader, thereby fitting easily into almost any production pipeline requiring real-time dynamically changing materials or lighting.

presentation

• SIGGRAPH 2007 Presentation [PPT (7.3MB)]
• Intel Presentation [PPT (8MB)]

[ Demo (Full Sources Included) (15 MB) ]

video

Video (DivX/20 MB) - Demonstration of editing spatially varying and homogeneous materials using our simple material design interface. The interface uses Lafortune et al.'s model to define the underlying material. For efficiency, we use the GPU to perform all painting operations.