3D graphics eBook - Course Materials Repository

High dynamic range rendering 64
• List of video games supporting HDR (http:/ / www. uvlist. net/ groups/ info/ hdrlighting)
• Examples of high dynamic range photography (http:/ / www. hdr-photography. org/ )
• Examples of high dynamic range 360-degree panoramic photography (http:/ / www. hdrsource. com/ )
Image-based lighting
Image-based lighting (IBL) is a 3D rendering technique which involves plotting an image onto a dome or sphere
that contains the primary subject. The lighting characteristics of the surrounding surface are then taken into account
when rendering the scene, using the modeling techniques of global illumination. This is in contrast to light sources
such as a computer-simulated sun or light bulb, which are more localized.
Image-based lighting generally uses high dynamic range imaging for greater realism, though this is not universal.
Almost all modern rendering software offers some type of image-based lighting, though the exact terminology used
in the system may vary.
Image-based lighting is also starting to show up in video games as video game consoles and personal computers start
to have the computational resources to render scenes in real time using this technique. This technique is used in
Forza Motorsport 4, and by the Chameleon engine used in Need for Speed: Hot Pursuit.
References
• Tutorial [1]
External links
• Real-Time HDR Image-Based Lighting Demo [2]
References
[1] http:/ / ict. usc. edu/ publications/ ibl-tutorial-cga2002. pdf
[2] http:/ / www. daionet. gr. jp/ ~masa/ rthdribl/