Method and apparatus for performing post-process antialiasing of polygon edges
US6005580A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 15, 1996 |
| Grant date | Dec 21, 1999 |
| Priority date | — |
| Expiry date | May 15, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/121
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for performing post-process antialiasing of polygon edges. According to one aspect of the invention, a method is provided for modifying the color of a pixel in a texture mapped representation of an image generated from a plurality of polygons. According to this method, it is determined that an edge of one of the plurality of polygons intersects a scan line in the texture mapped representation at an intersection point. In addition, the pixel within which this intersection point lies is determined. The color for this pixel is identified by pixel data stored as part of the texture mapped representation. A filter is performed using the texture mapped representation as an input texture map by: 1) determining a texture point in the input texture map that corresponds to the intersection point; 2) performing a filter on texels in the input texture map identified by that texture point to determine a corrected color for the pixel; and 3) altering the pixel data stored as part of the texture mapped representation for the pixel containing the intersection point to indicate the corrected color. According to another aspect of the invention, the filter used in this method i…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.