A family of new algorithms for soft filling

  • Authors:
  • Kenneth P. Fishkin;Brian A. Barsky

  • Affiliations:
  • Berkeley Computer Graphics Laboratory, Computer Science Division, Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California;Berkeley Computer Graphics Laboratory, Computer Science Division, Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California

  • Venue:
  • SIGGRAPH '84 Proceedings of the 11th annual conference on Computer graphics and interactive techniques
  • Year:
  • 1984

Quantified Score

Hi-index 0.00

Visualization

Abstract

Soft filling algorithms change the color of an anti-aliased region, maintaining the anti-aliasing of the region. The two published algorithms for soft filling work only if the foreground region is anti-aliased against a black background. This paper presents three new algorithms. The first fills against a region consisting of any two distinct colors, and is faster than the published algorithms on a pixel-by-pixel basis for an RGB frame buffer; the second fills against a region composed of three distinct colors; and the third fills against a region composed of four distinct colors. As the power of the algorithms increases, so do the number of assumptions they make, and the computational cost.