PLEASE VIEW IN SLIDE SHOW MODE TO ACTIVATE
- Slides: 19
PLEASE VIEW IN SLIDE SHOW MODE TO ACTIVATE AUDIO Alternatives to Two-Lens 3 D Mark Schubin, Schubin. Cafe. com Mark Schubin, HPA Tech Retreat, 2011 February 17 1
The Elusive Grail Can there be a 3 D system with n no ghosting n no V-A conflict or shrinking n adult-child compatibility n 2 D-viewer compatibility n no extra personnel n one lens & camera/position n one signal path/recording n full spatial & temporal resolution n inexpensive glasses n for all TVs & distribution? Mark Schubin, HPA Tech Retreat, 2011 February 17 2
Alternatives to Twin-Lens 3 D n Less Than Fully Stereoscopic n n 2 D-to-3 D Conversion n n frame-by-frame, auto+assist, live Virtual 3 D Cameras n n e. g. , choromostereoscopic, Pulfrich second VC per position Single-Lens Stereoscopic n n Sony TDG, ISee 3 D, etc. Soli. DDD, Wasol, Zepar Mark Schubin, HPA Tech Retreat, 2011 February 17 BBC R&D White Paper 180 ISee 3 D shuttering 3
Chromostereopsis n Eye lens focuses one color n n red seems in front of blue Real-world often matches front: people, animals back: green trees, blue skies n easy animation n n Chroma. Depth glasses n prism-based color shift portion of Apparatus to Talk to Aliens, Akiyoshi Kitaoka, Ritsumeikan U. Mark Schubin, HPA Tech Retreat, 2011 February 17 4
Pulfrich Illusion n One eye darkened dark eye sees what was n clear eye sees what is n n Choreography crucial n n carousel ideal Rolling Stones Steel Wheels tour: good Super Bowl half-time: bad Mark Schubin, HPA Tech Retreat, 2011 February 17 5
View Shifting n n n “Wiggle-Vision” 3 D for the one-eyed Constant motion if not subtle, annoying n if subtle, near invisible n n V 3 iris-shifting lens adaptor widely used, very subtle n see for yourself: http: //www. inv 3. com/examples_section. html n Mark Schubin, HPA Tech Retreat, 2011 February 17 6
Less Than Full Stereoscopy in Use enhanced chromostereopsis (Chroma. Depth) – VH 1 Pulfrich - Discovery anaglyph microstereopsis – Nine TV Sydney (Trio. Scopics shown) Mark Schubin, HPA Tech Retreat, 2011 February 17 viewshift – CBS 7
Virtual-Camera S 3 D Imec above, BBC Research White Paper 180 similar Mark Schubin, HPA Tech Retreat, 2011 February 17 8
“Binauricular Auduition” compared to stereoscope The Other Stereo A-B Stereo (Spaced Omnis) distance >>human head width n n n Scientific American, December 31, 1881 Mark Schubin, HPA Tech Retreat, 2011 February 17 BIG sensation difference Unnatural Poor mono compatibility remember “ping-pong” stereo? 9
“Single-Source” Stereo X-Y, M-S, Dummy Head “coincident stereo” techniques Mark Schubin, HPA Tech Retreat, 2011 February 17 consumer, too 10
Narrow-Separation Listening Embracing. Sound speaker system Philips HTS 7140 3 D Blu-ray home theatre with surround-sound bar common professional Wohler stereo monitoring Mark Schubin, HPA Tech Retreat, 2011 February 17 11
Cue Significance S. Nagata, 1991 Mark Schubin, HPA Tech Retreat, 2011 February 17 J. Cutting & P. Vishton, 1995 12
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/AAO 2000_poster. pdf Binocular Vision and Stereopsis, Howard & Rogers, 1996 Mark Schubin, HPA Tech Retreat, 2011 February 17 13
Limited Stereopsis reference: Canon XJ 22 x 7. 3 compact studio lens 165 mm wide box Panasonic VW-CLT 1 3 D conversion lens (outer width 58 mm) DXG-321 much narrower than pupillary distance Canon 3 D lens, shown on XL 1 Hammacher. Schlemmer Mark Schubin, HPA Tech Retreat, 2011 February 17 lens adaptor Sharp 3 D module 14
Microstereopsis 1979: D. O. T. S. NL (Beiser US; 1970: Songer) Nine TV Sydney Sony Technology Development Group CES 2009 no-glasses 2 D-compatible (no double images) ISee 3 D alternate-shuttered version Mark Schubin, HPA Tech Retreat, 2011 February 17 § in focus: normal § too close: LG, RM § too far: LM, RG § one camera 15
Microstereopsis Successfully broadcast n Patents have expired n One ordinary lens/position* n Single-camera/position* n 3 D display ok for 2 D viewing n Ghosting not an issue n V-A conflict not an issue * depends somewhat on system n Mark Schubin, HPA Tech Retreat, 2011 February 17 16
Microstereopsis Successfully broadcast n Patents have expired n One ordinary lens/position* n Single-camera/position* n 3 D display ok for 2 D viewing n Ghosting not an issue n V-A conflict not an issue * depends somewhat on system n Mark Schubin, HPA Tech Retreat, 2011 February 17 17
Microstereopsis Successfully broadcast n Patents have expired n One ordinary lens/position* n Single-camera/position* n 3 D display ok for 2 D viewing n Ghosting not an issue n V-A conflict not an issue * depends somewhat on system n Mark Schubin, HPA Tech Retreat, 2011 February 17 ? 18
More at Schubin. Cafe. com download “Some Aspects of 3 D in Depth” these slides are posted on the presentations page; the presentation with audio will be on Schubin. Cafe. com soon Mark Schubin, HPA Tech Retreat, 2011 February 17 19
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