1 / 12

Towards a unique subjective experiment dataset for 3DTV – « 3DTV phase 1 »

Towards a unique subjective experiment dataset for 3DTV – « 3DTV phase 1 ». Marcus Barkowsky. Overview. Purpose and scope Presentation of (additional) SRCs Presentation of (some) HRCs Timeline Examples of subjective test methodologies and conditions Discussion. Purpose and scope.

fadhila
Télécharger la présentation

Towards a unique subjective experiment dataset for 3DTV – « 3DTV phase 1 »

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Towards a unique subjective experiment dataset for 3DTV – « 3DTV phase 1 » Marcus Barkowsky

  2. Overview • Purpose and scope • Presentation of (additional) SRCs • Presentation of (some) HRCs • Timeline • Examples of subjective test methodologies and conditions • Discussion Marcus Barkowsky: Unique dataset 3DTV phase 1

  3. Purpose and scope • The scope of this database is to • Provide a unique set of degraded (+reference) sequences • Free for distribution • Free for publication • Well documented • Allowing comparisons! • Idea: Collecting a large number of “indices” for the same set of sequences in order to correlate the results and to discover the “ground truth” Marcus Barkowsky: Unique dataset 3DTV phase 1

  4. Purpose and scope • This database allows for • Cross - lab analysis: Run the same subjective experiment in several labs • Cross - methodology: Use different subjective test methodologies • Cross - environment: Use different environments for the subjective experiment, e.g. displays, backgrounds • Cross – scales: Asking observers to rate on various scales such as discomfort, depth quality, preference to 2D, etc. in order to find the relation to “Overall Quality of Experience” • Comparing the effect of training of observers • Evaluating additional inter-observer differences using for example questionnaires, observer characterization tests (prism facility, 3D acuity, sensitivity to asymmetric conditions) Marcus Barkowsky: Unique dataset 3DTV phase 1

  5. Out of this scope • The following points are out of the scope of this evaluation: • Length of sequences Marcus Barkowsky: Unique dataset 3DTV phase 1

  6. Presentation of additional SRC material database • NAMA3DS1:Nantes-Madrid 3D Stereoscopic Video Database 1 • Content captured with Panasonic 3DA1 • Most of the content captured uncompressed, otherwise ~20Mbit/s per view • Camera parameters mostly available • Depth map estimation available but not satisfying • Involved in the shooting: • From UPM: Jesús Gutiérrez, Narciso García • From IRCCyN/IVC: Matthieu Urvoy, Marcus Barkowsky, Romain Cousseau, Yohann Pitrey, Yao Koudota, Junle Wang, Patrick Le Callet Marcus Barkowsky: Unique dataset 3DTV phase 1

  7. Presentation of additional SRC material Depth map Filtered depth map Marcus Barkowsky: Unique dataset 3DTV phase 1

  8. Presentation of (some) HRCs • HRCs currently planned for the database: • Multiview Video Coding (MVC) • MPEG-4 part 10 / H.264 (AVC) • Transmission distortions • Resolution reduction • Framerate reduction • Asymmetric conditions • Other ideas: • Conversion S3D  2D+Z  S3D • Geometric distortions • <input welcome!> Marcus Barkowsky: Unique dataset 3DTV phase 1

  9. Selection of HRCs • How to select the PVSs for a unique subjective experiment ( ~ 160 sequences) from the large set of PVS? • Spread the range of • Different content • Different visual degradations (coding, blocking, blurring, color distortions, geometric distortions, …) • Different scale dimensions (video quality, discomfort, depth, …) • Suggestion: Perform a voting for PVSs in different 3D labs Marcus Barkowsky: Unique dataset 3DTV phase 1

  10. Timeline • Preparation of SRC sequences • 2 sets are already available • Identification of conditions in large HRC set • End of January? • Distribution of PVSs • Finish: End of February • Selection of PVSs • Conference Call mid-March • Unique dataset • Available end of March • Subjective experiments start • Analyze the results, prepare a report • Determine impact on Recommendations Marcus Barkowsky: Unique dataset 3DTV phase 1

  11. Dimensions of subjective experiment • Ideas of different test methodologies and test setups • Methodologies • ACR-HR • DSCQS • Paired Comparison (subset methods) • SAMVIQ • Scales • Quality of Experience • Video Quality • Naturalness • Visual Discomfort • Environment • Different screens • Standardized / Home environment Marcus Barkowsky: Unique dataset 3DTV phase 1

  12. Questions • Adding other SRC sequences • NICT license open enough for free distribution? • Who would like to contribute more/different HRCs in that timeframe? • Interest in participation in the PVS selection? • Who would be willing to run subjective experiments? • With well-prepared setup, e.g. 3D Blu-Ray? • Controlling their own lab setup and experiment method? Marcus Barkowsky: Unique dataset 3DTV phase 1

More Related