Pixel delta interpolation method and apparatus
US7636095B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2002 |
| Grant date | Dec 22, 2009 |
| Priority date | — |
| Expiry date | Sep 8, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T11/203
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for rendering an object including receiving a pixel tile representing a portion of a primitive to be rendered, determining attributes of a reference pixel within the pixel tile, and determining the attributes of neighboring pixels within the pixel tile based on barycentric differences relative to the reference pixel is disclosed. A circuit for calculating at least one attribute of an object to be rendered includes an initial calculation circuit providing full precision reference pixel attribute data in response to a pixel tile that defines at least a portion of the object; and a derivative circuit, operatively coupled to the initial calculation circuit, providing reduced precision neighboring pixel attribute data in response to the pixel tile. The derivative circuit includes a plurality of pixel attribute sub-circuits or components, which determine the attribute values of neighboring pixels within the pixel tile at a precision less than that of the precision used to define the reference pixel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.