Method and device for encoding moving picture using reference frequency of reference frame
US7835438B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 20, 2004 |
| Grant date | Nov 16, 2010 |
| Priority date | — |
| Expiry date | Jul 28, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/149
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A moving picture encoding method capable of using a reference frame number in multi-frame motion prediction and variable-length code reference frame information corresponding to the number includes the steps of: calculating a reference frequency of the reference frame; acquiring, with the reference frequency, reference frame identification information so that a ratio of a reference frame index code occupying a bit stream is reduced; and multiplexing the reference frame identification information together with encoded moving picture data. Instead of the calculation of the reference frequency, the reference frequency of the reference frame may be estimated by calculating a frame similarity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.