Directional interpolation method and device for increasing resolution of an image
US7532773B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2004 |
| Grant date | May 12, 2009 |
| Priority date | — |
| Expiry date | May 22, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T3/4007
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A directional interpolation method and device for increasing resolution of an image is disclosed. The device includes an input terminal, a memory, a texture analysis module, a texture variance consistence module and an interpolation module. The input terminal receives signals representing the pixels of the image. The memory stores the pixels in row direction. The texture analysis module obtains a monotone variation area by taking the position as a center. The texture variance consistence module computes all directional texture variances in a closest upper and a closest lower rows of pixels within the monotone variation area in the case of taking the position as a center and accordingly finds two pixels having texture variance consistence. The interpolation module finds a value of pixel to be interpolated to the position through a median filter in accordance with the two pixels and their neighbor pixels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.