Fringe Benefits of the H.264/AVC

1. Fringe Benefits of the H.264/AVC R. Queiroz, R. Ortis, A. Zaghetto and T. Fonseca,“Fringe benefits of the H.264/AVC,” in Proceedings of International Telecommunications Symposium, pp. 166-170, September 2006. Adviser : 葉家宏老師 Presenter : 蕭世倫 Date : 2009/12/09 (Wed)

2. Outline Introduction H.264/AVC Against Other Standards H.264-Intra as A Still Image Coder H.264/AVC Without Motion Estimation Conclusion

3. Introduction

4. Outline Introduction H.264/AVC Against Other Standards H.264-Intra as A Still Image Coder H.264/AVC Without Motion Estimation Conclusion

5. H.264/AVC Against Other Standards • Quarter-pel motion estimation • Arbitrary reference frames • In-loop deblocking filter

6. H.264/AVC Against Other Standards • Variable size macroblock partition • Intraframe prediction mode • Context-adaptive binary arithmetic coding (CABAC) • Variable block size transform

7. H.264/AVC Against Other Standards Fig. 1. PSNR (dB) plots for a few popular color video sequences. The sequence names are indicated. Resolutions are CIF (spatial) and 30 fps (temporal). PSNR was computed in YCbCr space

8. H.264/AVC Against Other Standards Fig. 2. PSNR (dB) plots for two popular color video sequences. The sequence names are indicated. Resolutions are CIF and 30 fps. PSNR was computed in YCbCr space

9. Outline Introduction H.264/AVC Against Other Standards H.264-Intra as A Still Image Coder H.264/AVC Without Motion Estimation Conclusion

10. H.264-Intra as A Still Image Coder • H.264 is a powerful still image compression engine • Context-adaptive binary arithmetic coding (CABAC) • Intra-frame macroblock prediction method

11. H.264-Intra as A Still Image Coder Fig. 3. PSNR (dB) plots comparing H.264-Intra against JPEG-2000 for a few monochrome images. At the bottom, the differential PSNR (relative to JPEG-2000) is shown for all the images to facilitate the comparison between coders.

12. H.264-Intra as A Still Image Coder Fig. 3. PSNR (dB) plots comparing H.264-Intra against JPEG-2000 for a few monochrome images. At the bottom, the differential PSNR (relative to JPEG-2000) is shown for all the images to facilitate the comparison between coders.

13. Outline Introduction H.264/AVC Against Other Standards H.264-Intra as A Still Image Coder H.264/AVC Without Motion Estimation Conclusion

14. H.264/AVC Without Motion Estimation • S: still (S) regions without motion • C: cut (C) regions where motion is very abrupt or does not exist • M: motion (M) regions where the moderate motion is manageable by a good ME procedure

15. H.264/AVC Without Motion Estimation Fig. 4. PSNR (dB) plots from frame to frame comparing H.264/WME and MPEG-2 for a few color sequences. PSNR was computed in the YCbCr space

16. H.264/AVC Without Motion Estimation Fig. 5. Average PSNR (dB) plots comparing H.264/WME and MPEG-2 for color sequence “Akiyo” at several bit-rates. PSNR was computed in the YCbCr space

17. Outline Introduction H.264/AVC Against Other Standards H.264-Intra as A Still Image Coder H.264/AVC Without Motion Estimation Conclusion

18. Conclusion The H.264-Intra can be used as a new benchamrk in image compression. It easily outperforms JPEG-2000 H.264/AVC outperforms MPEG-2 by a large margin, nevertheless the H.264/WME can be used as a lower cost version to rival MPEG-2 in complexity too

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