Page 263 - Video Coding for Mobile Communications Efficiency, Complexity, and Resilience
P. 263

240                Chapter  10.  Error Concealment Using Motion  Field Interpolation



                                         Foreman @ 25 f.p.s.
                      32.5
                                                                 γ=1
                                                                 γ=5
                                                                 γ=10
                                                                 γ=50
                       32


                      31.5
                      Y  (dB)
                     PSNR
                       31


                      30.5



                       30
                          10        20        30        40       50
                                          Block loss rate (%)
            Figure  10.3:  Performance  of  MFI  when  applied  to  QSIF  FOREMAN  at  25 frames=s  with  di,erent
            interpolation kernels. PSNRs are  for damaged blocks only



                                         Foreman @ 25 f.p.s.
                      32.5
                                                                 δ=1
                                                                 δ=5
                                                                 δ=10
                                                                 δ=50

                       32
                     PSNR Y  (dB)



                      31.5






                       31
                          10        20        30        40       50
                                          Block loss rate (%)
            Figure 10.4:  Performance of BM-MFI when applied to QSIF FOREMAN  at 25 frames=s with di,erent
            multihypothesis weights. PSNRs are for  damaged blocks  only
   258   259   260   261   262   263   264   265   266   267   268