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Frame Error Concealment Technique Using Adaptive Inter-Mode Estimation for H.264/AVC

Frame Error Concealment Technique Using Adaptive Inter-Mode Estimation for H.264/AVC. Min- Cheol Hwang, Jun- Hyung Kim, Hae -Yong Yang, Sung- Jea Ko and A.W. Morales IEEE Transactions on Consumer Electronics, Feb. 2008. Outline. Introduction Previous work Proposed

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Frame Error Concealment Technique Using Adaptive Inter-Mode Estimation for H.264/AVC

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  1. Frame Error Concealment Technique Using Adaptive Inter-Mode Estimation for H.264/AVC Min-Cheol Hwang, Jun-Hyung Kim, Hae-Yong Yang, Sung-JeaKo and A.W. Morales IEEE Transactions on Consumer Electronics, Feb. 2008

  2. Outline • Introduction • Previous work • Proposed • Bi-directional motion vector extrapolation • Adaptive inter-mode estimation • Experimental results

  3. Outline • Introduction • Previous work • Proposed • Bi-directional motion vector extrapolation • Adaptive inter-mode estimation • Experimental results

  4. Introduction • The maximum frame size of H.264 bitstream is 3125 bytes in Football sequence with QP 28 • The size of network packet is 4096 bytes • Packet loss could equal to frame loss

  5. Previous Error Concealment Algorithm • MB loss • Spatial • Temporal • Frame loss • Pixel-based • Block-based

  6. Frame Loss Error Concealment Algorithm • MV extrapolation • Hole block MV MV

  7. Outline • Introduction • Previous work • Proposed • Bi-directional motion vector extrapolation • Adaptive inter-mode estimation • Experimental results

  8. Frame Loss Detection In H.264/AVC • No frame loss • Frame loss t-1 t t+1 t+1 t-1

  9. Previous Work • Forward MV (FMV)

  10. Previous Work • Backward MV(BMV)

  11. Problem • Directions of MVs are inconsistent

  12. Outline • Introduction • Previous work • Proposed • Bi-directional motion vector extrapolation • Adaptive inter-mode estimation • Experimental results

  13. Bi-Directional Motion Vector Extrapolation • The optimal pair of forward and backward MV • α is set 0.6 • The estimate MV is

  14. Outline • Introduction • Previous work • Proposed • Bi-directional motion vector extrapolation • Adaptive inter-mode estimation • Experimental results

  15. Adaptive Inter-Mode Estimation • Marge the neighboring 4×4 blocks within the same MB if is satisfied • TMV is set to 2 • The average MV is chosen as the MV of the merge blocks

  16. Adaptive Inter-Mode Estimation

  17. Outline • Introduction • Previous work • Proposed • Bi-directional motion vector extrapolation • Adaptive inter-mode estimation • Experimental results

  18. Parameter Setting • CIF resolution • JM12.2 • GOP size: 30 • Search range ±16 • QP: 28, 34 and 40 • Packet loss rate (PLR): 5% and 10%

  19. Experimental Results

  20. Experimental Results

  21. Experimental Results Soccer sequence with 5% PLR Bus sequence with 10% PLR

  22. Experimental Results Frame copy CAB Proposed

  23. Experimental Results No error Frame copy CAB Proposed

  24. Complexity • Compare with CAB

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