Applying Ray Tracing for Virtual Reality and Industrial Design

Ingo Wald, Andreas Dietrich, Carsten Benthin, Alexander Efremov, Tim Dahmen,
Johannes G√ľnther, Vlastimil Havran, Hans-Peter Seidel, and Philipp Slusallek
Proceedings of the IEEE Symposium on Interactive Ray Tracing 2006, pp. 177-185,
Salt Lake City, USA, September 18-20, 2006
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Computer aided design (CAD) and virtual reality (VR) are becoming
increasingly important tools for industrial design applications.
Unfortunately, there is a huge and growing gap between what data
CAD engineers are working on, what rendering quality is needed
by designers and executives to faithfully judge a design variant, and
what rendering capabilities are offered by commonly available VR
frameworks. In particular, existing VR systems cannot currently
cope with the accuracy demanded by CAD engineers, nor can they
deliver the photo-realistic rendering quality and reliability required
by designers and decision makers.
In this paper, we describe a ray tracing based virtual reality
framework that closes these gaps. In particular, the proposed system
supports direct ray tracing of trimmed freeform surfaces even
for complex models of thousands of patches, allows for accurately
simulating reflections and refraction for glass and car paint effects,
offers support for direct integration of measured materials via bidirectional
texture functions, and even allows for soft environmental
lighting from high dynamic range environment maps. All of these
effects can be delivered interactively, and are demonstrated on a
real-world industrial model, a complete Mercedes C-Class car.