| Video transcoding technology based on video quality control | |
| Xu Yifan ; Dai Qionghai ; Guihua, E.R. | |
| 2010-05-06 ; 2010-05-06 | |
| 关键词 | Practical Theoretical or Mathematical/ adaptive codes digital video broadcasting discrete cosine transforms mean square error methods video coding/ video transcoding technology video quality control adaptive transcoding scheme digital video broadcasting DVB discrete cosine transform mean square error frequency domain quantization process/ B6135C Image and video coding B6420 Radio and television broadcasting B0290X Integral transforms in numerical analysis B0290F Interpolation and function approximation (numerical analysis) |
| 中文摘要 | An adaptive transcoding scheme was developed for DVB (digital video broadcasting) application with improved video quality control. The transcoding error is based on the mean square error of the DCT (discrete cosine transform) coefficients in the frequency domain. The model is based on the quantization process where the quantization steps are adaptively selected to provide the desired video quality. Unlike previous schemes, this scheme focuses on video quality control and does not need to reconstruct the pictures into the pixel domain. Therefore, computations are not needed for the DCT transform in the quality evaluation process. Simulations show that the scheme greatly improves the efficiency of transcoding while maintaining video quality. |
| 语种 | 中文 ; 中文 |
| 出版者 | Tsinghua Univ. Press ; China |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/8978]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | Xu Yifan,Dai Qionghai,Guihua, E.R.. Video transcoding technology based on video quality control[J],2010, 2010. |
| APA | Xu Yifan,Dai Qionghai,&Guihua, E.R..(2010).Video transcoding technology based on video quality control.. |
| MLA | Xu Yifan,et al."Video transcoding technology based on video quality control".(2010). |
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