SIGGRAPH 2008 > For Attendees > Classes > High-Dynamic-Range Imaging & Image-Based Lighting

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High-Dynamic-Range Imaging & Image-Based Lighting

Tuesday
8:30 am - 12:15 pm
Room 403 AB
Level: Intermediate

Theme: SIGGRAPH Core

This class outlines recent advances in high-dynamic-range imaging (HDRI), from capture to image-based lighting to display. In a hands-on approach, the class demonstrates how HDR images and video are captured, the file formats available to store them, and the algorithms required to prepare them for display on low-dynamic-range displays. The trade-offs at each step are assessed so attendees can make informed choices about data-capture techniques, file formats, and tone-reproduction operators. The class also presents the latest developments in image-based lighting.

Prerequisites
None. This course is intended for students, researchers, and industrial developers in digital photography, computer graphics rendering, real-time photoreal graphics, game design and visual-effects production (especially rendering and compositing).

Instructors
Greg Ward
Dolby Canada

Erik Reinhard
University of Bristol
and University of Central Florida

Paul Debevec
Institute for Creative Technologies and University of Southern California

Instructor Information

Greg Ward
Greg Ward is an HDR pioneer, having developed the first widely used high-dynamic-range image file format in 1986 as part of the RADIANCE lighting simulation system. Since then, he has developed the LogLuv TIFF HDR image format and the JPEG-HDR format, and authored the application Photosphere, an HDR image builder and browsing program. More recently, he has been involved with Dolby Canada's HDR display developments, which employ dual modulators to show colors 30 times brighter and 10 times darker than conventional monitors. Working in the computer graphics research community for over 20 years, he has developed rendering algorithms, reflectance models and measurement systems, tone reproduction operators, HDR image-processing techniques, and photo-printer calibration methods. His past employers include the Lawrence Berkeley National Laboratory, EPFL Switzerland, SGI, Shutterfly, Exponent, and BrightSide Technologies. He holds a bachelors in physics from the University of California, Berkeley and a masters in computer science from San Francisco State University. He is currently working as a consultant in Albany, California.

Erik Reinhard
Erik Reinhard is a lecturer at the University of Bristol and holds a courtesy appointment at the University of Central Florida. He has a BS and a TWAIO diploma in computer science from Delft University of Technology and a PhD in computer science from the University of Bristol. He was a post-doctoral researcher at the University of Utah. He co-authored the first book on high-dynamic-range imaging (Morgan Kaufmann Publishers, 2005). He is founder and co-editor-in-chief of the journal ACM Transactions on Applied Perception and guest editor of a special issue on Parallel Graphics and Visualisation for the journal Parallel Computing (March 2003) and a special issue on high-dynamic-range in the Journal of Visual Communication and Image Representation. He is also co-editor of Practical Parallel Rendering (A K Peters, 2002). His current interests are in visual perception and its application to computer graphics problems such as tone reproduction and color correction.

Paul Debevec
Paul Debevec is the associate director of graphics research at USC's Institute for Creative Technologies. His PhD thesis (University of California, Berkeley, 1996) presented Façade, an image-based modeling and rendering system for creating photoreal architectural models from photographs. Using Façade, he led creation of virtual cinematography of the Berkeley campus for his 1997 film "The Campanile Movie." Techniques developed for that film were used to create virtual backgrounds in the 1999 film "The Matrix." Subsequently, Debevec developed techniques for illuminating computer-generated scenes with real-world lighting captured through high-dynamic-range photography, demonstrating new image-based lighting techniques in his films "Rendering with Natural Light" (1998), "Fiat Lux" (1999), and "The Parthenon" (2004). he also led the design of HDR Shop, the first widely used high-dynamic-range image editing program. At USC ICT, Debevec has led development of a series of light stage devices for capturing and simulating how objects and people reflect light, which were recently used to create realistic digital actors in films such as "Spider Man 2" and "Superman Returns." He is the recipient of ACM SIGGRAPH's first Significant New Researcher Award and a co-author of the 2005 book High Dynamic Range Imaging (Morgan Kaufmann Publishers, 2005).