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:
Jul. 15, 2008
Filed:
Mar. 14, 2006
Donald J. Munsil, Kirkland, WA (US);
Glenn F. Evans, Kirkland, WA (US);
Stacey L. Spears, Sammamish, WA (US);
Donald J. Munsil, Kirkland, WA (US);
Glenn F. Evans, Kirkland, WA (US);
Stacey L. Spears, Sammamish, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Strategies are set forth for performing a scaling operation on image information using a filter. According to one exemplary implementation, the strategies involve: computing, based on scaling to be performed, a number of filter kernels required to implement the filter and a number of taps required for each filter kernel; pre-computing and storing the number of filter kernels; and applying the filter kernels to a row or column of the image information by repeatedly sequencing through the filter kernels if there are more pixel elements in the row or column than there are pre-calculated filter kernels. The scaling operation can employ a Catmull-Rom filter. Further, the scaling operations can be implemented by a pixel shader by assigning weighting information and delta-shifted versions of the image information to respective texture units of the pixel shader.