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ABSTRACT
In the production of computer generated pictures of three dimensional objects, one stage of the calculation is the determination of the intensity of a given object once its visibility has been established. This is typically done by modelling the surface as a perfect diffuser, sometimes with a specular component added for the simulation of hilights. This paper presents a more accurate function for the generation of hilights which is based on some experimental measurements of how light reflects from real surfaces. It differs from previous models in that the intensity of the hilight changes with the direction of the light source. Also the position and shape of the hilights is somewhat different from that generated by simpler models. Finally, the hilight function generates different results when simulating metallic vs. nonmetallic surfaces. Many of the effects so generated are somewhat subtle and are apparent only during movie sequences. Some representative still frames from such movies are included.
REFERENCES
Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.
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Catmull, E. A. Computer display of curved surfaces. Proc. Conf. on Comptr. Graphics. May 1975 (IEEE Cat. No. 75CH0981-1C)11-17
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4
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Gilpin, F. H. Effect of the variation of the incident angle on the coefficient of diffused reflection. Trans. Illum. Eng. Soc. Vol 5, 1910 854-873
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5
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Middleton, W. E. K. and Mungall, A. G. The luminous directional reflectance of snow. J. Opt. Soc. Am. 42, 8(Aug 1952) 572-579
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6
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Torrance, K. E. and Sparrow, E. M. Polarization, directional distribution, and off-specular peak phenomena in light reflected from roughened surfaces. J. Opt. Soc. Am. 56, 7(Jul 1966) 916-925
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7
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Torrance, K. E. and Sparrow, E. M. Theory for off-specular reflection from roughened surfaces. J. Opt. Soc. Am.. 57, 9(Sep 1967) 1105-1114
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8
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Trowbridge, T. S. and Reitz, K. P. Average irregularity representation of a roughened surface for ray reflection. J. Opt. Soc. Am. 65, 1975) 531-536
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CITED BY 121
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P. Peggy Li , Scott Whitman , Roberto Mendoza , James Tsaio, ParVox: a parallel splatting volume rendering system for distributed visualization, Proceedings of the IEEE symposium on Parallel rendering, p.7-ff., October 20-21, 1997, Phoenix, Arizona, United States
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Deborah Patrick , Shaun Bangay , Adele Lobb, Modelling and rendering techniques for African hairstyles, Proceedings of the 3rd international conference on Computer graphics, virtual reality, visualisation and interaction in Africa, November 03-05, 2004, Stellenbosch, South Africa
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Taosong He , Lichan Hong , Arie Kaufman , Hanspeter Pfister, Generation of transfer functions with stochastic search techniques, Proceedings of the 7th conference on Visualization '96, p.227-ff., October 28-29, 1996, San Francisco, California, United States
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Donald P. Greenberg , Kenneth E. Torrance , Peter Shirley , James Arvo , Eric Lafortune , James A. Ferwerda , Bruce Walter , Ben Trumbore , Sumanta Pattanaik , Sing-Choong Foo, A framework for realistic image synthesis, Proceedings of the 24th annual conference on Computer graphics and interactive techniques, p.477-494, August 1997
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Dave Edwards , Solomon Boulos , Jared Johnson , Peter Shirley , Michael Ashikhmin , Michael Stark , Chris Wyman, The halfway vector disk for BRDF modeling, ACM Transactions on Graphics (TOG), v.25 n.1, p.1-18, January 2006
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Alexis Angelidis , Fabrice Neyret , Karan Singh , Derek Nowrouzezahrai, A controllable, fast and stable basis for vortex based smoke simulation, Proceedings of the 2006 ACM SIGGRAPH/Eurographics symposium on Computer animation, September 02-04, 2006, Vienna, Austria
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Tim Weyrich , Wojciech Matusik , Hanspeter Pfister , Bernd Bickel , Craig Donner , Chien Tu , Janet McAndless , Jinho Lee , Addy Ngan , Henrik Wann Jensen , Markus Gross, Analysis of human faces using a measurement-based skin reflectance model, ACM Transactions on Graphics (TOG), v.25 n.3, July 2006
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Feng Liu , Scott Owen , Ying Zhu , Robert Harrison , Irene Weber, Web based molecular visualization using procedural shaders in X3D, ACM SIGGRAPH 2005 Web program, July 31-August 04, 2005, Los Angeles, California
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Hendrik P. A. Lensch , Michael Goesele , Yung-Yu Chuang , Tim Hawkins , Steve Marschner , Wojciech Matusik , Gero Mueller, Realistic materials in computer graphics, ACM SIGGRAPH 2005 Courses, July 31-August 04, 2005, Los Angeles, California
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Hendrik P. A. Lensch , Michael Goesele , Yung-Yu Chuang , Tim Hawkins , Steve Marschner , Wojciech Matusik , Gero Mueller, Realistic materials in computer graphics, ACM SIGGRAPH 2005 Courses, July 31-August 04, 2005, Los Angeles, California
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François Ferland , François Pomerleau , Chon Tam Le Dinh , François Michaud, Egocentric and exocentric teleoperation interface using real-time, 3D video projection, Proceedings of the 4th ACM/IEEE international conference on Human robot interaction, March 09-13, 2009, La Jolla, California, USA
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Taek-Hee Lee , Jeongjin Lee , Ho Lee , Heewon Kye , Yeong Gil Shin , Soo Hong Kim, Fast perspective volume ray casting method using GPU-based acceleration techniques for translucency rendering in 3D endoluminal CT colonography, Computers in Biology and Medicine, v.39 n.8, p.657-666, August, 2009
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