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Efficient Scalable Video Compression by Scalable Motion Coding

Efficient Scalable Video Compression by Scalable Motion Coding. Review and Implementation of DWT Based Approach. Syed Jawwad Bukhari 2004-03-0028. Overview of Presentation. Scalable Video Coding Scalable Motion Coding DWT Which Approaches For Review TWAVIX MC-EZBC For Implementation

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Efficient Scalable Video Compression by Scalable Motion Coding

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  1. Efficient Scalable Video Compression by Scalable Motion Coding Review and Implementation of DWT Based Approach Syed Jawwad Bukhari 2004-03-0028

  2. Overview of Presentation • Scalable Video Coding • Scalable Motion Coding • DWT • Which Approaches • For Review • TWAVIX • MC-EZBC • For Implementation • Scalable Video coding Using DWT and • Scalable Motion Coding • EFFICIENT SCALABLE MOTION CODING FOR WIDE-RANGE SCALABLE VIDEO COMPRESSION

  3. SCALABLE VIDEO CODING • Decode part of bit stream • Stream is in form of number of layers, • a ‘base’ layer • one or more ‘enhancement’ layers • Quality vs. bit rate

  4. Types of Scalability • Spatial • SNR • Temporal

  5. Spatial Scalability Images adapted from [2]

  6. Temporal Scalability Image adapted from [2]

  7. Spatial and Temporal Correlation Image adapted from [2]

  8. TWAVIX Architecture The WAvelet-based Vldm Coder with Scalability Image adapted from [1]

  9. Motion in adjacent frames

  10. Difference due to motion, Optical flow Optical Flow Difference Image adapted from [2]

  11. Motion Estimation and Compensation Image adapted from [2]

  12. Macro-block motion prediction Image adapted from [2]

  13. Motion Vectors Image adapted from [2]

  14. Motion Compensated Frame Image adapted from [2]

  15. DWT Image adapted from [2]

  16. DWT 1 Stage Image adapted from [2]

  17. DWT 2 Stage Image adapted from [2]

  18. DWT 5 Stage Image adapted from [2]

  19. DWT layering

  20. References • ACCURACY-SCALABLE Motion CODING FOR EFFICIENT SCALABLE VIDEO COMPRESSION; by Boisson ,Edouard & Guillemot • H.264 and MPEG-4 Video Compression; by Iain E. G. Richardson,The Robert Gordon University, Aberdeen, UK

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