The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 21, 2012
Filed:
Jun. 13, 2008
Richard Szeliski, Bellevue, WA (US);
Matthew T. Uyttendaele, Seattle, WA (US);
Simon Winder, Seattle, WA (US);
Richard Szeliski, Bellevue, WA (US);
Matthew T. Uyttendaele, Seattle, WA (US);
Simon Winder, Seattle, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Multi-pass image resampling technique embodiments are presented that employ a series of one-dimensional filtering, resampling, and shearing stages to achieve good efficiency while maintaining high visual fidelity. In one embodiment, high-quality (multi-tap) image filtering is used inside each one-dimensional resampling stage. Because each stage only uses one-dimensional filtering, the overall computation efficiency is very good and amenable to graphics processing unit (GPU) implementation using pixel shaders. This embodiment also upsamples the image before shearing steps in a direction orthogonal to the shearing to prevent aliasing, and then downsamples the image to its final size with high-quality low-pass filtering. This ensures that none of the stages causes excessive blurring or aliasing.