Video coding method and apparatus with motion compensation and motion vector estimator
US6591015B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1999 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Jul 28, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video coding method according to the present invention is adapted to predictively code each target block within a target frame relative to a reference frame. The method includes the steps of: a) calculating an estimate of the target block based on pixel values within the target block; b) calculating respective correction values for the target block and a predicted block associated with the target block, the predicted block being generated from the reference frame by motion compensation; c) correcting the pixel values within the target and predicted blocks using the respective correction values, and calculating a predicted error based on a difference between each said pixel value within the corrected target block and an associated one of the pixel values within the corrected predicted block; d) determining a coding mode based on the estimate of the target block and the predicted error; and e) coding the target block in accordance with the coding mode determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.