Magnification of indirection textures

US7400330B2 · kind B2 · utility

Assignee

• Microsoft Corporation · US

Inventors

• Sylvain Lefebvre · Quebec City, CA
• Hugues Hoppe · Redmond, US

Key dates

• Filing date: Jun 30, 2005
• Grant date: Jul 15, 2008
• Expiry date: Jun 22, 2026

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T3/40
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

An indirection texture magnification system and method for producing high-resolution indirection texture results. The system and method uses an indirection texture, designed for use with a low-resolution texture image, and a high-resolution texture image, which is a higher-resolution version of the low-resolution texture image. The indirection texture magnification system and method re-interprets an indirection texture computed for a low-resolution image so that a higher-resolution image can be used with the same indirection texture. This generates additional samples and allows the generation of a magnified, high-resolution indirection texture result. The indirection texture magnification system and method takes three or more neighboring pixel coordinates stored in an indirection texture and offsets those pixel coordinates in order to access the higher-resolution image with an increased precision. Colors obtained from adding this offset are combined to obtain a color for a corresponding pixel at a certain location in the magnified, high-resolution indirection texture result.