Systems and methods for highly efficient video compression using selective retention of relevant visual detail
US8077773B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2008 |
| Grant date | Dec 13, 2011 |
| Priority date | — |
| Expiry date | Oct 12, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/80
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods are presented for compressing digital video signals in a manner that prevents the creation of block artifacts and improves compression efficiency by the selective removal of data representing visually imperceptible or irrelevant detail. Bandwidth control is improved through prioritized removal of data exceeding permissible bandwidth limits. This provides a process by which a coupled compressor and de-compressor system can effect the transmission or storage of video at low bitrates with high perceptual quality of the decompressed video. In one embodiment, the low frequency components are removed from a video stream and either stored or transmitted in compressed format separate from the storage or transmission of the high frequency components of the video stream. Certain high frequency video stream details can be suppressed to further reduce bitrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.