Digital image scaling with non integer scaling factors
US8538199B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2010 |
| Grant date | Sep 17, 2013 |
| Priority date | — |
| Expiry date | Apr 5, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T3/4007
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Non integer scaling of images to reduce artifacts is presented herein. One embodiment includes determining a scaling resolution based on a pixel resolution of the image and a pixel resolution of an output device (i.e., factors of the scaling resolution). The image is converted to the scaling resolution to change (e.g., increase) the pixels of the image by the first factor. A grid is generated to scale the converted image. The grid has a number of sections defined according to the second factor times the pixel resolution of an output device. The converted image is sectioned according to the grid. Each section of the grid includes an integer number of pixels of the converted image. The color values of the pixels of the converted image are averaged within each section of the grid to compute a single color value for each section of the grid and scale the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.