Moving picture prediction method, moving picture coding method and apparatus, and moving picture decoding method and apparatus
US8553770B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2012 |
| Grant date | Oct 8, 2013 |
| Priority date | — |
| Expiry date | May 18, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/577
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image decoding method is provided for generating a predictive pixel value of a current picture to be decoded, and decoding the current picture using the predictive pixel value. The method includes a first parameter calculation step of calculating a first parameter corresponding to a distance between the current picture and a first reference picture; a second parameter calculation step of calculating a second parameter corresponding to a distance between the first reference picture and a second reference picture; a judgment step of judging whether or not a value of a third parameter calculated using a value obtained by dividing the first parameter by the second parameter is a value which is represented by a plurality of bits; a predictive pixel value generation step of generating a predictive pixel value of the current picture; and a decoding step of decoding the current picture using the predictive pixel value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.