This Article 
 Bibliographic References 
 Add to: 
Antialiasing Scan-Line Data
January/February 1990 (vol. 10 no. 1)
pp. 18-30

The output of a scan-line visible-surface algorithm is a collection of scan-line segments with associated simple shading functions, which together define the shading as a function of a continuous variable along each scan line. A hybrid antialiasing method that uses this information fully is presented. The method extends to the case where an image transform maps the scan lines into slanted lines in the output raster coordinates. Edge-slope information can be used to infer data along extra scan lines to improve antialiasing. Results obtained with the method are given.

1. N. Max, "Atmospheric Illumination and Shadows,"Computer Graphics(Proc. SIGGRAPH), Aug. 1986, pp. 117-124.
2. K. Weiler and P. Atherton, "Hidden Surface Removal Using Polygon Area Sorting,"Computer Graphics(Proc. SIGGRAPH), July 1977, pp. 214-222.
3. E. Feibush, M. Levoy, and R. Cook, "Synthetic Texturing Using Digital Filters,"Computer Graphics(Proc. SIGGRAPH), Vol. 14, No. 3, July 1980, pp. 294-301.
4. F. Crow, "The Aliasing Problem in Computer Generated Shaded Images,"CACM, Vol. 20, No. 11, Nov. 1977, pp. 799- 805.
5. F. Crow, "A Comparison of Antialiasing Techniques,"CG&A, Vol. 1, No. 1, Jan. 1981, pp. 40-48.
6. H. Gouraud, "Continuous Shading of Curved Surfaces,"IEEE Trans. Computers, Vol. 20, No. 6,1971, pp. 623-628.
7. G.S.P. Miller, "The Definition and Rendering of Terrain Maps,"Computer Graphics(Proc. SIGGRAPH), Vol. 20, No. 4, Aug. 1986, pp. 39-48.
8. E. Catmull and A.R. Smith, "3D Transformations of Images in Scanline Order,"Computer Graphics, (Proc. SIGGRAPH), July 1980, pp. 279-285.
9. K. M. Fant, "A nonaliasing, real-time spatial transform technique,"IEEE CG&A, pp. 71-80, Jan. 1986.
10. J. Bloomenthal, "Edge Inference with Applications to Anti-aliasing,"Computer Graphics(Proc. SIGGRAPH), Vol. 17, No. 3, July 1983, pp. 157-162.
11. A. Fujimoto, C. Perrot, and K. Iwata, "A 3D Graphics Display System with Depth Buffer and Pipeline Processor,"CG&A, Vol. 4, No. 6, June 1984, pp. 11-23.
12. J. Bloomenthal, "Modeling the Mighty Maple,"Computer Graphics(Proc. Siggraph), Vol. 19, No. 3, July 1985, pp. 305-312.
13. N. Max, "Horizon Mapping: Shadows for Bump-Mapped Surfaces,"The Visual Computer, Vol. 4, No. 2, July 1988, pp. 109-117.

Nelson L. Max, "Antialiasing Scan-Line Data," IEEE Computer Graphics and Applications, vol. 10, no. 1, pp. 18-30, Jan.-Feb. 1990, doi:10.1109/38.45807
Usage of this product signifies your acceptance of the Terms of Use.