Code amount control method and apparatus
US9131236B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2011 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Feb 5, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/124
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A code amount control method used in a video encoding method for performing code amount control by estimating a generated code amount for an encoding target picture. The control method includes steps of computing a feature value of the encoding target picture and stores the value into a storage device; extracting a feature value of a previously-encoded picture stored in the storage device and used for generated code amount estimation; comparing the feature values of the encoding target picture and the previously-encoded picture; and a step performed according to a result of the comparison. If it is determined that difference between both feature values is larger than a predetermined criterion value, the amount of code generated for the encoding target picture is estimated using no result of encoding of the previously-encoded picture, and otherwise the relevant generated code amount is estimated based on a result of the encoding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.