Method of improved image/video compression via data re-ordering
US7409099B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2007 |
| Grant date | Aug 5, 2008 |
| Priority date | — |
| Expiry date | Jul 19, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/60
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of image and video compression including data re-ordering to improve the performance of the core compression algorithm. In the inventive method, pixel values of at least part of an image are examined and then re-ordered into a new order that has greater compactability than the original pixel order. The re-ordered pixel values are then compressed, e.g., by block transform. In the particular case of a compression scheme employing a block transform, the inventive method reduces the complexity of the transform coefficients, resulting in more efficient compression. The method may be added to existing compression algorithms with only minor modifications to the bitstream and decoder architecture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.