Anisotropic filtering technique

US6816167B1 · kind B1 · utility

Assignee

• Intel Corporation · US

Inventors

• Brian D. Rauchfuss · Fort Collins, US
• Val G. Cook · Shingle Springs, US
• Tom Piazza · Loomis, US

Key dates

• Filing date: Jan 10, 2000
• Grant date: Nov 9, 2004
• Expiry date: Jan 10, 2020

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01L21/6838
• WIPO field: Semiconductors
• WIPO sector: Electrical engineering

Abstract

An anisotropic filtering technique includes defining pixel elements in two dimensions and defining at least one object having three dimensional surfaces in a three-dimensional model space and storing texel elements in two dimensions defining a texture map bearing a relationship to the three dimensional surfaces of the at least one object. Each pixel element to be texture mapped is divided into a group of sub-pixel elements and the sub-pixel elements are separately texture mapped. The resultant textures of the sub-pixel elements are averaged to obtain a texture for their respective pixel element.