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Journal of Zhejiang University-SCIENCE A

, Volume 10, Issue 6, pp 778–785 | Cite as

Local curve fitting based Lagrange multiplier selection for Id-slice in multi-view video coding

  • Shi-fang Xu
  • Guo-bin Chen
  • Hua-dong Pan
  • Ji-lin Liu
Article
  • 58 Downloads

Abstract

The rate and distortion of Id-slice do not fit the globally linear relationship on a logarithmic scale. Lagrange multiplier selection methods based on the globally linear approximate relationship are neither efficient nor optimal for multi-view video coding (MVC). To improve the coding efficiency of MVC, a local curve fitting based Lagrange multiplier selection method is proposed in this paper, where Lagrange multipliers are selected according to the local slopes of the approximate curves. Experimental results showed that the proposed method improves the coding efficiency. Up to 2.5 dB gain was achieved at low bitrates.

Key words

Id-slice Lagrange multiplier Local curve fitting Multi-view video coding (MVC) 

CLC number

TP391 

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Copyright information

© Zhejiang University and Springer-Verlag GmbH 2009

Authors and Affiliations

  • Shi-fang Xu
    • 1
  • Guo-bin Chen
    • 1
  • Hua-dong Pan
    • 1
  • Ji-lin Liu
    • 1
  1. 1.Department of Information Science and Electronic EngineeringZhejiang UniversityHangzhouChina

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