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Reduced-Resolution Intra Block Coding Mode
Sung Jae Park, Jung-hak Nam, Dong-gyu Sim, Seoung Jun Oh, and Jin Woo Hong
Abstract :	In this letter, a new intra-block coding mode is presented to improve the coding efficiency for band-limited signals. A band-limited block is sub-sampled, and the sub-sampled signal is coded on the basis of the conventional prediction/transform coding. The rest of the samples are reconstructed by interpolation at the decoder side without any side information. Experimental results show that the proposed algorithm achieves coding gains of 2.7% for common intermediate format (CIF), 4.29% for quarter CIF, and 6.39% for 720p60 sequences against the H.264/AVC JM10.2 reference software.
Key word :	H.264/AVC, interpolation, intra-block coding.
DOI :	http://dx.doi.org/10.4218/etrij.09.0208.0280
Cite this :	Sung Jae Park, Jung-hak Nam, Dong-gyu Sim, Seoung Jun Oh, and Jin Woo Hong, "Reduced-Resolution Intra Block Coding Mode," ETRI Journal, vol. 31, no. 1, Feb. 2009, pp. 80-82. http://dx.doi.org/10.4218/etrij.09.0208.0280
References :	1. J. Ostermann et al., "Video Coding with H.264/AVC: Tools, Performance, and Complexity," IEEE Circuits and Systems Magazine, vol. 4, no. 1, 2004, pp. 7-28. 2. K.S. Lee and H.J. Kim, "An Implementation of H.264 Intra Predictor Based on Sub-sampling," Circuits and Systems, APCCAS, IEEE Asia Pacific Conf., Dec. 2006, pp. 1079-1082 3. G. Bjontegaard, "Calculation of Average PSNR Differences between RD-Curves," ITU-T Q.6/SG16 VCEQ, VCEQ-M33, Apr. 2001.
Reader   Evaluation :	Important   Innovative   Insightful   Useful
Correction :	In the 10th line of the abstract of the print version, "sixty 720 pixel" should read "720p60." The electronic version has been corrected.

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