发明名称 |
Two pass rate control techniques for video coding using rate-distortion characteristics |
摘要 |
This disclosure describes rate control techniques that can improve video coding based on a“two-pass”approach. The first pass codes a video sequence using a first set of quantization parameters (QPs) for the purpose of estimating rate-distortion characteristics of the video sequence based on the statistics of the first pass. A second set of QPs can then be defined for a second coding pass. The estimated rate-distortion characteristics of the first pass are used to select QPs for the second pass in a manner that minimizes distortion of the frames of the video sequence.
|
申请公布号 |
US7876819(B2) |
申请公布日期 |
2011.01.25 |
申请号 |
US20050303617 |
申请日期 |
2005.12.15 |
申请人 |
QUALCOMM INCORPORATED |
发明人 |
WANG HAOHONG;MALAYATH NARENDRANATH |
分类号 |
H04N11/02 |
主分类号 |
H04N11/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|