Systems and methods for resetting rate control state variables upon the detection of a scene change within a group of pictures
US7197072B1 · kind B1 · utility
35Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 2003 |
| Grant date | Mar 27, 2007 |
| Priority date | — |
| Expiry date | Jan 15, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/23406
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention is related to methods and apparatus that advantageously improve picture quality in a video encoder, such as an MPEG video encoder. Scene changes typically occur relatively frequently in picture sequences, such as movies. One embodiment of the invention detects a scene change within a group of pictures and allocates bits within the group of pictures in response to the detected scene change without changing a predetermined structure for the group of pictures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.