A new DCT-Domain distortion model for MB-Level quality control

He Xun, Chen Xianmin, Liu Peilin, Satoshi Goto

研究成果: Conference contribution

抜粋

For many applications like video surveillance and digital cinema, it is desirable to encode video content with constant video quality. However, although constant quantization parameter is used in video encoder, quality fluctuation in macroblock level is still very large and standard deviation of PSNR is typically about 1.8dB. Since distortion is introduced in the process of quantization of DCT coefficients, we propose a new DCT-domain distortion model which utilizes the truncated tailing bits in quantization to estimate distortion in macroblock level, and QP of each block is determined by the estimated PSNR. Experimental results show that our proposed model can accurately estimate distortion of each MB before implementing quantization and the corresponding RMSE is only about 0.3dB (less than 1% of the actual value). Compared with previous works, our proposed algorithm can achieve 0.57dB enhancement in quality stabilization.

元の言語English
ホスト出版物のタイトルProceedings - 2009 International Conference on Computer Modeling and Simulation, ICCMS 2009
ページ69-72
ページ数4
DOI
出版物ステータスPublished - 2009
イベント2009 International Conference on Computer Modeling and Simulation, ICCMS 2009 - Macau
継続期間: 2009 2 202009 2 22

Other

Other2009 International Conference on Computer Modeling and Simulation, ICCMS 2009
Macau
期間09/2/2009/2/22

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Computer Science Applications
  • Software

フィンガープリント A new DCT-Domain distortion model for MB-Level quality control' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用

    Xun, H., Xianmin, C., Peilin, L., & Goto, S. (2009). A new DCT-Domain distortion model for MB-Level quality control. : Proceedings - 2009 International Conference on Computer Modeling and Simulation, ICCMS 2009 (pp. 69-72). [4797357] https://doi.org/10.1109/ICCMS.2009.28