HDR 的鼻祖 Paul Debevec

　　作为一个准专业的3D图形爱好者，有可能你不知道Paul Debevec，但不可能不知道HDR 贴图和用法，HDR几乎是目前所有高级渲染器所支持一个通用光能渲染标准，也是最智能最简单的真实光线计算方式之一。这是就由Paul Debevec早在1997年的 SIGGRAPH上提出的，并在1998年成功的应用在电影的实时渲染上。

　　Paul Debevec的主要研究成果目前主要集中在4个方面：图形技术研究、电影应用领域、ICT图形实验室工作、图形独立项目。

　　主要项目包括：
　　多角度多元化的适时照明开发 SIGGRAPH 2005
　　适时烟雾粒子的智能产生 SIGGRAPH 2005
　　双重灯光的智能照明 EGSR 2005
　　对太阳和天空的纯粹HDR图片的捕捉 AFRIGRAPH 2004
　　自然灯光的反射比和折射计算 ICT-TR-06-2004
　　面部动画的反射计算和捕捉 EGSR 2004
　　适时高动态贴图的开发和应用 EGWR 2001
　　针对史前文化对象复原的光能传递模拟 VAST 2001
　　模拟真实的多角度多灯光的照明效果 SIGGRAPH 2001
　　对真实灯光的自动捕捉和渲染 EGSR 2003 　
　　复制作品的真实灯光匹配和模拟 EGSR 2003
　　线性灯光的反射计算 SIGGRAPH 2003
　　用照片建立模型并渲染的技术研究 SIGGRAPH 1996
　　高动态广域图像的捕捉和基本应用 SIGGRAPH 1997
　　依靠IBR技术用投影纹理来建立真实模型效果 EGRW 98
　　对象对环境的真实模拟 SIGGRAPH 98
　　球形照明的反转技术 SIGGRAPH 99
　　反射域与人脸光线的相互关系 SIGGRAPH 2000

　　个人介绍
　　Paul Debevec earned degrees in Math and Computer Engineering at the University of Michigan in 1992 and a Ph.D. in Computer Science at UC Berkeley in 1996. He began combining research in computer vision and computer graphics in 1991 by three-dimensionally modeling and rendering a Chevette from photographs. At Interval Research Corporation he contributed to Michael Naimark's Immersion '94 virtual exploration of Banff National forest and collaborated with Golan Levin on the interactive art installation Rouen Revisited.

　　Debevec's Ph.D. thesis under Prof. Jitendra Malik presented Fa?ade, a an image-based modeling system for creating virtual cinematography of architectural scenes using new techniques for photogrammetry and image-based rendering. Using Fa?ade he directed a photoreal fly-around of the Berkeley campus for his 1997 film The Campanile Movie whose techniques were later used to create the Academy Award-winning virtual backgrounds for the "bullet time" shots in the 1999 film The Matrix.

　　Following his Ph.D. Debevec developed techniques for capturing real-world illumination and illuminating synthetic objects with real light, facilitating the realistic integration of real and computer generated imagery. His 1999 film Fiat Lux placed towering monoliths and gleaming spheres into a photorealistic reconstruction of St. Peter's Basilica, all illuminated by the light that was actually there. Techniques from this research known as HDRI and Image-Based Lighting have been used to dramatic effect in films such as the X-Men series, The Matrix sequels, The Chronicles of Narnia, and Batman Begins. Debevec's 2004 film The Parthenon used 3D scanning, inverse global illumination, HDRI, and image-based lighting to virtually reunite the Parthenon and its sculptures.

　　At USC ICT Debevec has led the development of several Light Stage systems that capture and simulate how people and objects appear under real-world illumination. The Light Stage 2 process was used by Sony Pictures Imageworks to create photoreal digital actors as part of the Academy Award-winning visual effects in Spider Man 2, the Academy Award-nominated visual effects in Superman Returns, and most recently Spider Man 3.

　　In 2001 Debevec received ACM SIGGRAPH's first Significant New Researcher Award for his Creative and Innovative Work in the Field of Image-Based Modeling and Rendering, in 2002 was named one of the world's top 100 young innovators by MIT's Technology Review Magazine, and in 2005 received a Lillian Gilbreth lectureship from the National Academy of Engineering. Debevec is a member of ACM SIGGRAPH, the Visual Effects Society, was a program co-chair for the 2002 Eurographics Workshop on Rendering, and is a Research Associate Professor in the USC Computer Science Department. He leads the Graphics Laboratory at the University of Southern California's Institute for Creative Technologies.