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Electronics and Telecommunications Research Institute (한국전자통신연구원)
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Enhanced Block-Based Adaptive Loop Filter with Multiple Symmetric Structures for Video Coding

  • Lee, Ha-Hyun (Broadcasting & Telecommunications Convergence Research Laboratory, ETRI) ;
  • Lim, Sung-Chang (Broadcasting & Telecommunications Convergence Research Laboratory, ETRI) ;
  • Choi, Hae-Chul (Broadcasting & Telecommunications Convergence Research Laboratory, ETRI) ;
  • Jeong, Se-Yoon (Broadcasting & Telecommunications Convergence Research Laboratory, ETRI) ;
  • Kim, Jong-Ho (Broadcasting & Telecommunications Convergence Research Laboratory, ETRI) ;
  • Choi, Jin-Soo (Broadcasting & Telecommunications Convergence Research Laboratory, ETRI)
  • Received : 2009.11.30
  • Accepted : 2010.05.18
  • Published : 2010.08.30
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Abstract

In this letter, we present an enhanced block-based adaptive loop filter (E-BALF) with multiple filter symmetric structures. The E-BALF adapts various filter symmetric structures in a rate-distortion optimization sense, reflecting the statistical properties of each image in a video sequence. Experimental results show that the proposed method achieves a reduction in the Bj${\phi}$ntegaard delta (BD)-bitrate by an average of 9.60% compared with Joint Model 11.0 of H.264/AVC. Compared to the state-of-the-art BALF, a reduction of up to 1.13% in BD-bitrate is achieved.

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References

  1. ISO/IEC JTC 1, "Draft Call for Proposals on High-Performance Video Coding (HVC)," Doc.N10926, Oct. 2009.
  2. ITU-T SG16, "Draft Call for Proposals for Next-Generation Video Coding Standardization," TD152(PLEN/16), Nov. 2009.
  3. J. Lee et al., "Intra-Mixture Prediction Mode and Enhanced Most Probable Mode Estimation for Intra Coding," ETRI J., vol. 31, no. 5, Oct. 2009, pp. 610-612. https://doi.org/10.4218/etrij.09.0209.0153
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  8. T. Chujoh, N. Wada, and G. Yasuda, "Quadtree-Based Adaptive Loop Filter (QALF)," IUT-T SG16/Q.6 Doc. COM16-C181-E, Jan. 2009.

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