Interactive Rendering with Real-World Illumination
Simon Gibson and Alan Murta.
Rendering Techniques 2000
(Proceedings of the 11th Eurographics Workshop on Rendering), Brno,
Czech Republic, June 2000.
We propose solutions for seamlessly integrating synthetic objects into
background photographs at interactive rates. Recently developed
image-based methods are used to capture real-world illumination, and
sphere-mapping is used illuminate and render the synthetic objects. We
present a new procedure for approximating shadows cast by the
real-world illumination using standard hardware-based shadow mapping,
and a novel image composition algorithm that uses frame-buffer
hardware to correctly overlay the synthetic objects and their shadows
onto the background image. We show results of an OpenGL implementation
of the algorithm that is capable of rendering complex synthetic
objects and their shadows at rates of up to 10 frames per second on an
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