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Alternatives to Two-Lens 3D

Explore alternative 3D systems that offer no ghosting, no V-A conflict, adult-child compatibility, 2D viewer compatibility, and more. Learn about chromostereoscopic, 2D-to-3D conversion, single-lens stereoscopic, pulfrich illusion, and view shifting techniques.

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Alternatives to Two-Lens 3D

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  1.  PLEASE VIEW IN SLIDE SHOW MODE TO ACTIVATE AUDIO  Alternatives to Two-Lens 3D Mark Schubin, SchubinCafe.com Mark Schubin,HPA Tech Retreat, 2011 February 17

  2. The Elusive Grail Can there be a 3D system with • no ghosting • no V-A conflict or shrinking • adult-child compatibility • 2D-viewer compatibility • no extra personnel • one lens & camera/position • one signal path/recording • full spatial & temporal resolution • inexpensive glasses • for all TVs & distribution? Mark Schubin,HPA Tech Retreat, 2011 February 17

  3. Alternatives to Twin-Lens 3D • Less Than Fully Stereoscopic • e.g., choromostereoscopic, Pulfrich • 2D-to-3D Conversion • frame-by-frame, auto+assist, live • Virtual 3D Cameras • second VC per position • Single-Lens Stereoscopic • Sony TDG, ISee3D, etc. • SoliDDD, Wasol, Zepar BBC R&D White Paper 180 ISee3D shuttering Mark Schubin,HPA Tech Retreat, 2011 February 17

  4. Chromostereopsis • Eye lens focuses one color • red seems in front of blue • Real-world often matches • front: people, animals back: green trees, blue skies • easy animation • ChromaDepth glasses • prism-based color shift portion of Apparatus to Talk to Aliens, Akiyoshi Kitaoka, Ritsumeikan U. Mark Schubin,HPA Tech Retreat, 2011 February 17

  5. Pulfrich Illusion • One eye darkened • dark eye sees what was • clear eye sees what is • Choreography crucial • carousel ideal • Rolling Stones Steel Wheels tour: good Super Bowl half-time: bad Mark Schubin,HPA Tech Retreat, 2011 February 17

  6. View Shifting • “Wiggle-Vision” • 3D for the one-eyed • Constant motion • if not subtle, annoying • if subtle, near invisible • V3 iris-shifting lens adaptor • widely used, very subtle • see for yourself: http://www.inv3.com/examples_section.html Mark Schubin,HPA Tech Retreat, 2011 February 17

  7. LessThanFullStereoscopy in Use enhanced chromostereopsis (ChromaDepth) – VH1 Pulfrich - Discovery anaglyph micro- stereopsis – Nine TV Sydney (TrioScopics shown) view- shift – CBS Mark Schubin,HPA Tech Retreat, 2011 February 17

  8. Virtual-Camera S3D Imec above, BBC Research White Paper 180 similar Mark Schubin,HPA Tech Retreat, 2011 February 17

  9. The Other Stereo “Binauricular Auduition” compared to stereoscope A-B Stereo (Spaced Omnis) distance >>human head width • BIG sensation difference • Unnatural • Poor mono compatibility remember “ping-pong” stereo? Scientific American, December 31, 1881 Mark Schubin,HPA Tech Retreat, 2011 February 17

  10. “Single-Source” Stereo consumer, too X-Y, M-S, Dummy Head “coincident stereo” techniques Mark Schubin,HPA Tech Retreat, 2011 February 17

  11. Narrow-Separation Listening EmbracingSound speaker system Philips HTS7140 3D Blu-ray home theatre with surround-sound bar common professional Wohler stereo monitoring Mark Schubin,HPA Tech Retreat, 2011 February 17

  12. Cue Significance S. Nagata, 1991 J. Cutting & P. Vishton, 1995 Mark Schubin,HPA Tech Retreat, 2011 February 17

  13. Visual Stereoacuity 10 arcsecond stereoacuity ~ 1/6 of a pixel at “optimum” (6/6, 20/20) viewing angle “Stereoacuity at Distance and Near,” Wong, Woods, & Peli http://www.eri.harvard.edu/faculty/peli/posters/optometry/AAO2000_poster.pdf Binocular Vision and Stereopsis, Howard & Rogers, 1996 Mark Schubin,HPA Tech Retreat, 2011 February 17

  14. Limited Stereopsis Panasonic VW-CLT1 3D conversion lens (outer width 58 mm) reference: Canon XJ22x7.3 compact studio lens 165 mm wide box lens adaptor Canon 3D lens, shown on XL1 DXG-321 much narrower than pupillary distance Hammacher- Schlemmer Sharp 3D module Mark Schubin,HPA Tech Retreat, 2011 February 17

  15. Microstereopsis 1979: D.O.T.S. NL (Beiser US; 1970: Songer) Nine TV Sydney Sony Technology Development Group CES 2009 no-glasses 2D-compatible (no double images) • in focus: normal • too close: LG, RM • too far: LM, RG • one camera ISee3D alternate-shuttered version Mark Schubin,HPA Tech Retreat, 2011 February 17

  16. Microstereopsis • Successfully broadcast • Patents have expired • One ordinary lens/position* • Single-camera/position* • 3D display ok for 2D viewing • Ghosting not an issue • V-A conflict not an issue * depends somewhat on system Mark Schubin,HPA Tech Retreat, 2011 February 17

  17. Microstereopsis • Successfully broadcast • Patents have expired • One ordinary lens/position* • Single-camera/position* • 3D display ok for 2D viewing • Ghosting not an issue • V-A conflict not an issue * depends somewhat on system Mark Schubin,HPA Tech Retreat, 2011 February 17

  18. Microstereopsis ? • Successfully broadcast • Patents have expired • One ordinary lens/position* • Single-camera/position* • 3D display ok for 2D viewing • Ghosting not an issue • V-A conflict not an issue * depends somewhat on system Mark Schubin,HPA Tech Retreat, 2011 February 17

  19. download “Some Aspects of 3D in Depth” these slides are posted on the presentations page; the presentation with audio will be on SchubinCafe.com soon More at SchubinCafe.com Mark Schubin,HPA Tech Retreat, 2011 February 17

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