发明授权
- 专利标题： Method and device for controlling the quality of video data
- 专利标题（中）： 用于控制视频数据质量的方法和装置
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申请号： US10096707申请日： 2002-03-13
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公开(公告)号： US07082167B2公开(公告)日： 2006-07-25
- 发明人: Patrice Alexandre , Xavier Ducloux , Gildas Guelou
- 申请人： Patrice Alexandre , Xavier Ducloux , Gildas Guelou
- 申请人地址： FR Cergy Pontoise
- 专利权人： Nextream S.A.
- 当前专利权人： Nextream S.A.
- 当前专利权人地址： FR Cergy Pontoise
- 代理商 Joseph J. Laks; Ronald H. Kurdyla; Guy H. Eriksen
- 优先权： FR0104623 20010329
- 主分类号： H04N7/12
- IPC分类号： H04N7/12
摘要：
The present invention relates to a method and a device for monitoring the quality of video data having to undergo coding and decoding, making it possible to maintain predetermined constant quality of the video data after decoding. The method is such that information representing the complexity of video data to be coded is received from at least one coder. For each video-data item to be coded, a reference quantization value is calculated as a function of the complexity. For each video-data item to be coded, a reference throughput calculated as a function of the reference quantization value and of the value of the predetermined constant quality is calculated and transmitted to the coder, allowing the coder to code each video data item so as to obtain video data at the predetermined quality, after decoding.
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