Method and apparatus for antialiasing using a non-uniform pixel sampling pattern
US6501483B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 1998 |
| Grant date | Dec 31, 2002 |
| Priority date | — |
| Expiry date | May 29, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2200/12
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention provides a method and apparatus for an anti-aliasing process that allows for super-sampling at a high subpixel resolution, but does not require the process and memory resources typically required for conventional super-sampling at this subpixel resolution. Each pixel is partitioned into an array that provides for a large number of subpixels, and a smaller set of super-samples from this set of subpixels are sampled and used to determine the resultant pixel values. Because the set of super-samples is substantially smaller in number (less than half) than the number of subpixels, the processing and memory requirements are substantially reduced. The set of super-samples are preferably determined so as to provide for a uniform sampling frequency in each of the major axes, and along each diagonal, even though the super-samples may not provide an uniform sampling of each pixel area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.