Method for encoding symbols from a sequence of digitized images
US9338469B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 13, 2010 |
| Grant date | May 10, 2016 |
| Priority date | — |
| Expiry date | Dec 22, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/174
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Images are divided into image regions. The image regions are processed in encoding cycles such that during an encoding cycle, entropy encoding is carried out in a plurality of parallel encoding branches. In each encoding branch the symbols of an image region are encoded by entropy encoding, which is based on one or more probability models, which take into account the frequencies of symbols occurring in image regions. The probability models are adapted on the basis of the symbols occurring in the image region. A common set of probability models is updated at predetermined time intervals on the basis of frequencies that are adapted in at least one temporally preceding encoding cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.