Method for parallel interpolation of images
US5625374A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 7, 1993 |
| Grant date | Apr 29, 1997 |
| Priority date | — |
| Expiry date | Sep 7, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention is a method for performing a parallel interpolation between corresponding pixel characteristics within a packed foreground pixel data word and a packed background pixel data word. A blending factor is used to indicate the extent to which the pixel characteristics are scaled, where the scaling is related to a power of two. The pixel characteristics within each packed data word are scaled simultaneously. The method of the present invention preferably comprises the steps of: creating shifted versions of the packed foreground pixel data word and the packed background pixel data word; inserting a guard bit into the most-significant bit (MSB) position of each pixel characteristic within the two shifted packed data words; adding the two shifted packed data words to create a packed result data word, where the packed result data word corresponds to a 50% blending; and adding a packed adjustment data word formed from either the packed foreground or background data word to the packed result data word based upon the exact value of the blending factor. Upon completion of the method, the packed result data word is interpreted as a packed composite pixel data word.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.