Low-resolution video coding content extraction from high resolution
US9154791B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 3, 2013 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Nov 14, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A low complexity method for directly decoding low-resolution video frames from compressed high-resolution video content that were encoded using predictive coding toques, such as the H264 video coding standard, is disclosed. The decoding resolution is inversely proportional to the decoding complexity. Thus, a smaller decoding resolution yields higher computation and power savings. Low-frequency coefficients of 2 Dimensional transformed predictions are added to low-frequency coefficients of a transformed residual error. Low-frequency coefficients of the reconstructed data are then inversely transformed, having a smaller size transform. Further computational and power savings are obtained by reconstructing only those referenced pixels necessary for accurate decoding of proceeding Intra blocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.