Low-resolution video coding content extraction
US8514942B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 31, 2008 |
| Grant date | Aug 20, 2013 |
| Priority date | — |
| Expiry date | Jan 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Low complexity method directly decode low-resolution frames from compressed high-resolution videos that were encoded using predictive coding techniques like the H.264 video coding standard. The smaller the decoding resolution, the higher will be the computation and power savings of using the method. Low-frequency coefficients of 2D transformed predictions are added to the low-frequency coefficients of the transformed residual error. Low-frequency coefficients of the reconstructed data are then inverse transformed taking a smaller size transform. Further savings are obtained by reconstructing only those reference pixels that will be needed for accurate decoding of further Intra blocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.