|
Warning: The download time has expired please click on the item to try again.
ABSTRACT
Certain defects, such as jagged edges and disappearing detail, have long been an annoyance in digitally generated shaded images. Although increasing the resolution or defocusing the display can attenuate them, an understanding of these defects leads to more effective methods. This paper explains the observed defects in terms of the aliasing phenomenon inherent in sampled signals and discusses prefiltering as a recognized cure. A method for evaluating filters is presented, the application of prefiltering to hidden-surface algorithms is discussed, and an implementation of a filtering tiler is shown accompanied by examples of its effectiveness.
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.
 |
1
|
|
| |
2
|
Crow, F.C. The aliasing problem in computer-synthesized shaded images. UTEC-CSc-76-015, Dept. Comptr. Sci., U. of Utah, Salt Lake City, Utah, March 1976.
|
 |
3
|
|
| |
4
|
Gouraud, H. Computer display of curved surfaces. UTEC-CSc- 71-113, Comptr. Sci., U. of Utah, June 1971. Abridged in IEEE Trans. Comptrs. C-20 (June 1971).
|
| |
5
|
Hunt, R.W.G., The Reproduction of Colour in Photography, Printing and Television. Fountain Press, England, 3rd Ed., 1975.
|
 |
6
|
|
| |
7
|
|
| |
8
|
Stockham, T.G. Jr., High-speed convolution and correlation. Proc. AFIPS 1966 SJCC, Vol. 28, AFIPS Press, Montvale, N.J., pp. 229-233.
|
 |
9
|
|
| |
10
|
Zworykin, V.K., and Morton, G.A. Television. Wiley, New York, 2nd Ed., 1954.
|
CITED BY 44
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Ares Lagae , Craig S. Kaplan , Chi-Wing Fu , Victor Ostromoukhov , Oliver Deussen, Tile-based methods for interactive applications, ACM SIGGRAPH 2008 classes, August 11-15, 2008, Los Angeles, California
|
|
|
Bongjun Jin , Insung Ihm , Byungjoon Chang , Chanmin Park , Wonjong Lee , Seokyoon Jung, Selective and adaptive supersampling for real-time ray tracing, Proceedings of the Conference on High Performance Graphics 2009, August 01-03, 2009, New Orleans, Louisiana
|
|
|
|
|
|
|
|