1. H.264 and DIS 指導教授：楊士萱 老師 學生：鄭馥銘

2. Outline Introduction of DIS Combine DIS and H.264 Some problem for combination issue Future work

3. Outline Introduction of DIS Combine DIS and H.264 Some problem for combination issue Future work

4. Introduction Why use DIS in video-footage device  Video footage from hand-held camera is typically jerky due to small,unwanted camera movements.  We present a video stabilization algorithm aimed to produce a compensated video sequence so that the camera’s undesirable shake or jiggle can be removed.

5. Categories of DIS Mechanical-Optical system Mechanical-Digital system Fully Digital system

6. Architecture of DIS - 1 Pre-processing Diadv ： Need additional memory 、 sensor 、 chip StabilizationVideo-EncoderVideo-Decoder inputoutput

7. Architecture of DIS - 2 Post-processing Adv ： No motion estimation computation Disadv ： Coding efficiency can not be increased Stabilization Video-EncoderVideo-Decoder inputoutput

8. Architecture of DIS - 3 Combine-Encoder Adv ： Save memory 、 sensor 、 chip 、 Coding efficiency can be increased 。 Disdv ：？ Stabilization Video-EncoderVideo-Decoder inputoutput

9. Summarize the goal of DIS-system Combine DIS and H.264 Encoder  Our DIS using block-base ME is suited with encoder so that DIS can immediate get MV form encoder.  Coding efficiency can be increased  Jitter can be removed

10. Outline Introduction of DIS Combine DIS and H.264 Some problem for combination issue Future work

11. H.264 Baseline Profile Free to use Tools  I Slice  P Slice  CAVLC  Slice Group  Redundant Slice

12. Review of DIS system Block-Blased Motion Estimation MV Validation MVs FMV Generation Hand – shake Estimation Motion correction LMVs FMV SMV, HMV, AMV

13. H.264 Encoder Architecture

14. Review of DIS system Block-Blased Motion Estimation MV Validation MVs FMV Generation Hand – shake Estimation Motion correction LMVs FMV SMV, HMV, AMV

15. H.264 Encoder Architecture

16. ME - In DIS system MB Size

17. ME - In DIS system

18. Reference picture management  Short term  Long term

19. ME - In DIS system Pixel Resolution  Full pixel  Half pixel  Quarter pixel

20. ME - In DIS system H.264 Main profile  B Slice

21. ME - In DIS system H.264 Main profile  Interlaced

22. ME - In DIS system Slice group  Ex 1 ： interlace  Ex 2 ： foreground & background

23. Combine DIS system and H.264 Block-Blased Motion Estimation MV Validation MVs FMV Generation Hand – shake Estimation Motion correction LMVs FMV SMV, HMV, AMV Block-Blased Motion Estimation Hand – shake Estimation Motion correction MVs SMV, HMV, AMV

24. H.264 Encoder Architecture HE

25. Combine DIS system and H.264 Block-Blased Motion Estimation Hand – shake Estimation Motion correction MVs SMV, HMV, AMV

26. H.264 Encoder Architecture HE Motion Correction ?

27. Outline Introduction of DIS Combine DIS and H.264 Some problem for combination issue Future work

28. Some problem of combination issue Where to place Motion Correction module What we need  MV buffer  Delay residual coding

29. DIS-H.264 system architecture-1 HE Motion Correction MV Buffer

30. Some problem of combination issue DIS-H.264 system architecture-1  Maybe jitter can be removed  But it does not increase coding efficiency

31. Remark of combination issue Shifting frame to stable position （ Motion Correction ） before motion estimation, in order to increase coding efficiency. Shifting frame to stable position （ Motion Correction ） before motion estimation, Because the size of reference frame is smaller than current frame.

32. Zoran DIS-MPEG4 system

33. Future work Ability to modify reference software program To assess the effects of DIS-H.264 system