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Evaluation of MPEG4-SVC f or QoE protection i n the context of transmission errors

Yohann Pitrey Marcus Barkowsky Patrick Le Callet Romuald Pepion. Evaluation of MPEG4-SVC f or QoE protection i n the context of transmission errors. SPIE Optical Engineering + Applications Applications of Digital Image Processing XXXIII. IRCCyN lab, IVC group NANTES, FRANCE

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Evaluation of MPEG4-SVC f or QoE protection i n the context of transmission errors

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  1. Yohann Pitrey Marcus Barkowsky Patrick Le Callet Romuald Pepion Evaluation of MPEG4-SVC for QoE protection in the context oftransmission errors SPIE Optical Engineering + Applications Applications of Digital Image Processing XXXIII IRCCyN lab, IVC group NANTES, FRANCE Ecole Polytechnique de l’Universite de Nantes

  2. Yohann Pitrey - MPEG-4 SVC for error concealment – 08.03.2010 Scalable Video Coding for error concealment

  3. Yohann Pitrey - MPEG-4 SVC for error concealment – 08.03.2010 Outline • Workflow • SVC-based error concealment • Subjective experiment setup • Experimental results • Conclusions

  4. Yohann Pitrey - MPEG-4 SVC for error concealment – 08.03.2010 Workflow overview

  5. Yohann Pitrey - MPEG-4 SVC for error concealment – 08.03.2010 SVC-based error concealment

  6. Yohann Pitrey - MPEG-4 SVC for error concealment – 08.03.2010 Subjective experiment setup (1/2) Viewing conditions 40-inch reference full-HD LCD screen 1 session of 40 min. 145 sequences of 10 sec. Viewing distance = 4 x screen height (2m) Assessment methodology Absolute Category Rating (ACR)with 5 levels (bad …. excellent) Observers 29 non-expert viewers Visual acuity / color blindness tested

  7. Subjective experiment setup (2/2) • Tested video sequences Yohann Pitrey - MPEG-4 SVC for error concealment – 08.03.2010

  8. Experimental results (1/3) Yohann Pitrey - MPEG-4 SVC for error concealment – 08.03.2010

  9. Experimental results (2/3) * 120 kbps 15 fps 120kbps 30 fps 200 kbps 15 fps 200 kbps 30 fps patch patch patch patch switch switch switch switch upscale upscale upscale upscale reference Damaged AVC Non damaged SVC - _ _ _ _ Yohann Pitrey - MPEG-4 SVC for error concealment – 08.03.2010

  10. Experimental results (2/3) * 120 kbps 15 fps 120kbps 30 fps 200 kbps 15 fps 200 kbps 30 fps patch patch patch patch switch switch switch switch upscale upscale upscale upscale reference Damaged AVC Non damaged SVC _ - _ _ _ Yohann Pitrey - MPEG-4 SVC for error concealment – 08.03.2010

  11. Experimental results (2/3) * 120 kbps 15 fps 120kbps 30 fps 200 kbps 15 fps 200 kbps 30 fps patch patch patch patch switch switch switch switch upscale upscale upscale upscale reference Damaged AVC Non damaged SVC _ _ - _ _ Yohann Pitrey - MPEG-4 SVC for error concealment – 08.03.2010

  12. Experimental results (2/3) * 120 kbps 15 fps 120kbps 30 fps 200 kbps 15 fps 200 kbps 30 fps patch patch patch patch switch switch switch switch upscale upscale upscale upscale reference Damaged AVC Non damaged SVC _ _ _ - _ Yohann Pitrey - MPEG-4 SVC for error concealment – 08.03.2010

  13. Experimental results (2/3) * 120 kbps 15 fps 120kbps 30 fps 200 kbps 15 fps 200 kbps 30 fps patch patch patch patch switch switch switch switch upscale upscale upscale upscale reference Damaged AVC Non damaged SVC _ _ _ _ - Yohann Pitrey - MPEG-4 SVC for error concealment – 08.03.2010

  14. Yohann Pitrey - MPEG-4 SVC for error concealment – 08.03.2010 Experimental results (3/3) • Statistical verification (student t-test) b a statistically better than b a b a and b notstatistically significantly different a b b statistically better than a a

  15. Experimental results (4/4) Yohann Pitrey - MPEG-4 SVC for error concealment – 08.03.2010

  16. Yohann Pitrey - MPEG-4 SVC for error concealment – 08.03.2010 Conclusions SVC + concealment gets better quality than AVC + concealment Spatial discontinuities less visible than temporal discontinuities Layers with equal FPS => pixel-level concealment Layers with different FPS => frame-level concealment

  17. Your questions are welcome! Thank you for your attention

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