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Publication Type	technical report
School or College	College of Engineering
Department	Computing, School of
Creator	Malley, Thomas J. V.
Title	A shading method for computer generated images
Date	1988-06
Description	A shading method for computer generated images is developed that provides benefits of both ray tracing and radiosity methods. Diffuse reflection behavior is taken from the radiosity approach, while specular reflection and transparency are based on ray tracing methods. Distributions of sample rays are traced to calculate approximate geometric form factors used in the radiosity solution for shading free form surfaces. The resulting shaded images include the effects of color bleeding between diffuse surfaces, soft shadows, caustics, and attenuations in reflection and transparency based on the Fresnel reflection law.
Type	Text
Subject	computer graphics; shading method; computer generated images; ray tracing; radiosity
Language	eng
Bibliographic Citation	Malley, T. J. V. (1988). A shading method for computer generated images. UUCS-88-026.
Series	University of Utah Computer Science Technical Report
Relation is Part of	ARPANET
Format Medium	application/pdf
Format Extent	32,231,727 bytes
File Name	Malley-A_Shading_Method.pdf
Conversion Specifications	Original scanned with Kirtas 2400 and saved as 400 ppi uncompressed TIFF. PDF generated by Adobe Acrobat Pro X for CONTENTdm display
ARK	ark:/87278/s6qv5nvm
Setname	ir_computersa
ID	101866
Reference URL	https://collections.lib.utah.edu/ark:/87278/s6qv5nvm

Page Metadata

Title	Page 80
Setname	ir_computersa
ID	101864
OCR Text	Show 68 [14] Robert L. Cook and Kenneth E. Torrance. A Reflectance Model for Computer Graphics. Computer Graphics, Volume 15, Number 3:307-316, July 1981. [15] Akira Fujimoto, Takayuki Tanaka, and Kansei Iwata. ARTS: Accelerated RayTracing System. IEEE Computer Graphics and Applications, Volume 6, Number 4:16-26, April 1986. [16] AndrewS. Glassner. Space Subdivision for Fast Ray Tracing. IEEE Computer Graphics and Applications, Volume 4, Number 10:15-22, October 1984. [17] Jeffrey Goldsmith and John Salmon. Automatic Creation of Object Hierarchies for Ray Tracing. IEEE Computer Graphics and Applications, Volume 7, Number 5:14-20, May 1987. [18] Cindy M. Goral, Kenneth E. Torrance, Donald P. Greenberg, and Bennett Battaile. Modelling the Interaction of Light between Diffuse Surfaces. Computer Graphics, Volume 18, Number 3:213-222, July 1984. [19] PaulS. Heckbert and Pat Hanrahan. Beam Tracing Polygonal Obje~ts . Computer Graphics, Volume 18, Number 3:119-127, July 1984. [20] David S. Immel and Michael F. Cohen. A Radiosity 11ethod for Non-Diffuse Environments. Computer Graphics, Volume 20, Number 4:133-142, August 1986. [21] James T. Kajiya. Anisotropic Reflection ~1odels . Computer Graphics, Volume 19, Number 3:15-21, July 1985. [22] James T. Kajiya. The Rendering Equation. In Siggraph86 Tutorial on Ray Tracing, Association for Computing Machinery, New York, NY, August 1986. (23) James T. Kajiya. The Rendering Equation. Computer Graphics, Volume 20, Number 4:143-150, August 1986. [24] Timothy L. Kay and James T. Kajiya. Ray Tracing Complex Scenes. Computer Graphics, Volume 20, Number 4:269-278, August 1986. [25] Gary W. Meyer, Holly E. Rushmeier, Michael F. Cohen, Donald P. Greenberg,· and Kenneth E. Torrance. An Experimental Evaluation of Computer Graphics Imagery. ACM Transactions on Graphics, 5(1):30-50, January 1986. [26) Tomoyuki Nishita and Eihachiro Nakamae. Continuous Tone Representation of Three-Dimensional Objects Taking Account of Shadows and Interrefiection. Computer Graphics, Volume 19, Number 3:23-30, July 1985. [27] John W. Peterson. PRT - A High Quality Image Generation System. March 1988. Unpublished manuscript, University of Utah Computer Science Department. [28] Bui Tong Phong. illumination for Computer Generated Pictures. Communications of the ACM, Volume 18, Number 6:311-317, June 1975.
Reference URL	https://collections.lib.utah.edu/ark:/87278/s6qv5nvm/101864