1. M17051 - Newspaper sequence - Results of 3DV/FTV Exploration Experiments with depths and view synthesis. October, 2009, Xi’an Krzysztof Klimaszewski Olgierd Stankiewicz Krzysztof Wegner team supervisor: Marek Domański Chair of Multimedia Telecommunications and Microelectronics Poznań University of Technology, Poland

2. 2 EE1 ‘Newspaper’ sequence Recommended settings Semiautomatic DERS5.0 + VSRS3.5 Half-pixel new manual information for key frames Smoothing coefficient 1.0-4.0

3. Background – wrong depth M16756 - Results of Exploration Experiments3

4. new MDM file 4 Frame 100Frame 200

5. new MEM file 5 Frame 100Frame 200

6. Synthesis results - comparison 6

7. 7 Best results Half-pixel precision is 0.3dB better than pixel precision which is 0.2dB better than quarter-pixel-precision Results are subjectively better

8. 8 Depth map obtained for frame 0, 100, 200

9. 9 Conclussions Semi-automatic DERS is better than automatic DERS Still more key frames is needed to achieve better quality

10. M16756 - Results of Exploration Experiments10 „Camera Distance” Camera distance = 3Camera distance = 1

11. EE 4 JMVM 5.0.6 GOP length was set to 16 Targeted bitrates 0.75, 1.5, 3, 6 Mbps for 2 view case QP – Quantization index for views QD – Quantization index for depth maps M16756 - Results of Exploration Experiments11

12. Quantization parameters BitrateQP-QD pairs selected 750 kbps 43-31, 37-36, 35-41, 38-34, 40-32, 39-33, 36-37, 35-40, 42-31, 44-30, 37-35 1.5 Mbps 30-32, 35-26, 41-24, 28-44, 29-35, 31-30, 28-43, 28-42, 37-25, 40-24, 28-41 3 Mbps29-21, 25-26, 23-34, 33-19, 24-28, 23-33, 30-20 6 Mbps28-13, 20-20, 19-23 12 Selected QP and QD indexes pairs which meet targeted bitrate

13. Results – 750 kbps Bitrate [kbps] QPQD against uncompressed synthesisagainst original view PSNR [dB] PSNR (pspnr) [dB] PSPNR temporal [dB] PSPNR spatial [dB] PSNR [dB] PSNR (pspnr) [dB] PSPNR temporal [dB] PSPNR spatial [dB] 730433131.3331.4945.3133.8229.6229.7444.831.38 733373634.2934.4948.4338.6431.3931.5648.0934.02 737354134.5934.8749.2339.431.6531.8749.1234.54 747383433.8334.0147.9137.8531.1731.3147.4733.65 752403232.9433.146.9236.3530.5930.7246.4332.8 753393333.4633.6347.4937.1930.9331.0746.9933.3 753363734.6134.8448.9239.2331.631.7948.634.36 754354034.6934.9749.2739.531.6931.949.1234.57 755423131.8632.0145.8934.629.9330.0445.3631.81 762443030.6730.8344.7132.8329.1429.2644.230.72 764373534.3434.5448.4538.731.4131.5848.0834.03 - the best result for given bitrate- the worst result for given bitrate 13

14. Results - PSNR 14

15. Results – PSNR without outer 15

16. Results – PSPNR temporal 16

17. Results – PSPNR spatial 17

18. Results - summary 18

19. Summary Quality of synthesized view depends more on quality of compressed/decompressed image (QP parameter) than on quality of compressed/decompressed depth (QD). The usual approach of choosing the minimal QP does not give the best results in some cases, but the differences of quality measures are neglible. When quality of synthesized view is calculated with original view as a reference, no quality improvement is observed when increasing bitrate from 3 Mbps to 6Mbps in terms of PSNR, PSNR (pspnr) and PSPNR. Quality of synthesized views (PSNR as well as PSPNR) increases, when measured with reference synthesized from uncompressed data in the similar way as for 2D sequences – approximately constant increase of quality for increase of bitrate by a factor of two. 19