Image upsampling with training images
US8233734B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2008 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Jun 1, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T3/4053
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Images are upsampled using a knowledge base derived from a plurality of high-quality training images. The knowledge base is used to refine a high-frequency component including high-frequency aspects of a high-resolution, low-frequency image, interpolated from a low-resolution full-frequency image, into a high-frequency component. An enhancement step is performed without using a knowledge base to construct a high-compatibility component from the low-resolution, full-frequency image. The low-resolution, full-frequency image is combined with the coarse high-frequency component to yield an enhanced high-frequency component. A second knowledge base step is performed to construct an improved high-frequency component from the enhanced high-frequency component. The improved high-frequency component is blended with a high-resolution, low-frequency image to yield a high-resolution image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.