Methods and device for efficient resampling and resizing of digital images
US9350899B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2012 |
| Grant date | May 24, 2016 |
| Priority date | — |
| Expiry date | Mar 2, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N11/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Described are a system and method to determine the initial luma and chroma phase such that the resulting image after chroma upsampling and scaling has zero phase difference between the luma and chroma components. Particularly, the described method may include receiving a subsampled input image having luma and chroma values. The method may then perform a phase computation of the input image to determine scaling parameters such that phase differences between all color components of an output image are zero. The method may then include performing a combined upscaling and upsampling process on the input image using the scaling parameters to generate an upscaled image with no phase difference from the subsampled image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.