Sub-pixel interpolation and its application in motion compensated encoding of a video signal
US9118927B2 · kind B2 · utility
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112References
9Claims
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Key dates
| Filing date | Jun 13, 2007 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Aug 13, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/82
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Reducing computational complexity when generating sub-pixel values for sub-pixel motion estimation from integer pixels. In an embodiment, half pixels in vertical and horizontal directions are computed by a applying a filter of first complexity on integer pixels, and a half pixel in diagonal direction is computed using a filter of lower complexity as compared to the filter of first complexity. Quarter (and other lower resolution pixels) pixels may also be generated using the half pixel in the diagonal direction. Thus, overall computational complexity is reduced in generating sub-pixels for sub-pixel motion estimation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.