Adaptive reconstruction for Wyner-Ziv video coders

Antoni Roca; Josep Prades-Nebot; Edward J. Delp III

doi:10.1117/12.807270

19 January 2009 Adaptive reconstruction for Wyner-Ziv video coders

Antoni Roca, Josep Prades-Nebot, Edward J. Delp III

Proceedings Volume 7257, Visual Communications and Image Processing 2009; 725708 (2009) https://doi.org/10.1117/12.807270
Event: IS&T/SPIE Electronic Imaging, 2009, San Jose, California, United States

Abstract

In contrast to conventional video coding, Wyner-Ziv video coders perform simple intra-frame encoding and complex inter-frame decoding using side information. An important process in Wyner-Ziv decoding is the reconstruction process. So far, two main reconstructions have been used: the Maximum a Posteriori (MAP) reconstruction and the Minimum Mean Square Error (MMSE) reconstruction. In this paper, we study the MAP and MMSE reconstructions for both Pixel-Domain and Transform-Domain Wyner-Ziv video coders. We also present a new reconstruction function for Pixel-Domain Wyner-Ziv video coders that adapts to the local accuracy of the side information. Experimental results show that our adaptive reconstruction provides improvements over both the MAP and the MMSE reconstructions.

Citation Download Citation

Antoni Roca, Josep Prades-Nebot, and Edward J. Delp III "Adaptive reconstruction for Wyner-Ziv video coders", Proc. SPIE 7257, Visual Communications and Image Processing 2009, 725708 (19 January 2009); https://doi.org/10.1117/12.807270

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