Image resolution enhancement
US8538201B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 14, 2009 |
| Grant date | Sep 17, 2013 |
| Priority date | — |
| Expiry date | Jan 25, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T3/4053
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to upscaling of images such as upscaling of video images from standard definition to high definition. An input image is upscaled to a resolution enhanced image (207) by weighting pixel values in the input image depending on a match metric combining two match metrics. A first image generator (103) generates a blurred version of the input image and a second image generator (103) generates an upscaled interpolated version. The first metric is generated by comparing pixel sets of the blurred image and the upscaled interpolated image. A second metric is generated by comparing pixel sets of the input image and already synthesized pixel values of the resolution enhanced image (207). For each location in a search area, a resolution enhancement processor (107) generates the combined match metric and uses this to weigh the pixel value of that location when generating the unknown pixel value of the resolution enhanced image (207).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.