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Digital Stereoscopic (3D) Digital Stereoscopic (3D) Presentation:Presentation:

How its Done Today andHow its Done Today andPost Production ImplicationsPost Production Implications

Glenn KennelGlenn KennelTexas Instruments DLP Cinema®Texas Instruments DLP Cinema®

February 23, 2006February 23, 2006

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Disney’s “Chicken Little”Disney’s “Chicken Little”using Barco and Christie DLP Cinema® projectorsusing Barco and Christie DLP Cinema® projectors

with Dolby Digital Cinema Player™ and Real D Z-Screen™with Dolby Digital Cinema Player™ and Real D Z-Screen™

Digital Content: Dual 24 fpsL & R eye in parallel

144 Hz (Triple flash), L/R eye sequential

You see 144 frames per second

L

| L R L R L R | L R L R L R | frame 1 frame 2

L R

Silver Screen

R

L L L

R R R Real D Glasses(Circular Polarization)

DLP Cinema® ProjectorReal D Z-Screen

Dolby DCPlayer

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Shuttered GlassesShuttered Glasses

Dual-streamSERVER

DLP Cinema®PROJECTOR

Buffer BoxIR

Emitter

292ALeft Eye

292BRight Eye

GPIO 37pin

NuVision &StereographicsActive Glasses

Standard Screen(1.5X gain)40 ft wide

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Digital Stereoscopic (3D) PicturesDigital Stereoscopic (3D) PicturesComparison of capabilities, costs and max. screen sizesComparison of capabilities, costs and max. screen sizes

PlaybackPlaybackServers fromServers from

QuVis, Dolby, Doremi QuVis, Dolby, Doremi and Kodakand Kodak

DisplayDisplayDLP Cinema® ProjectorsDLP Cinema® Projectors11

Barco DP100 or Christie Barco DP100 or Christie CP2000CP2000

Picture Picture QualityQuality

Exhibitor CostsExhibitor Costs Max Max Screen Screen

WidthWidth2 2 (ft)(ft)

Dual-stream serverDual-stream server

oror

2 servers in sync2 servers in sync

Single Projector w/Active Single Projector w/Active GlassesGlasses

Standard screen with 1.5X gainStandard screen with 1.5X gain

Shuttered LCD glassesShuttered LCD glasses

96 FPS Double flash (LRLR)96 FPS Double flash (LRLR)

Very Very GoodGood

Std auditorium & screenStd auditorium & screen

Standard projectorStandard projector

~$200 glasses ($25 soon?)~$200 glasses ($25 soon?)

~$2000 washing system~$2000 washing system

40 ft wide40 ft wide

(5 ft L)(5 ft L)

Single Projector w/ Z-screen®Single Projector w/ Z-screen®

Silver screen (2.0X gain)Silver screen (2.0X gain)

Passive circular-polarized Passive circular-polarized glassesglasses

144 PFS Triple flash144 PFS Triple flash

Very Very GoodGood

Standard auditoriumStandard auditorium

Standard projectorStandard projector

Real D proprietary license, Real D proprietary license, (includes silver screen)(includes silver screen)

< $1 glasses< $1 glasses

45 ft wide45 ft wide

(5 ft L)(5 ft L)

Two Projectors w/ fixed Two Projectors w/ fixed polarizerspolarizers

(stacked or side by side)(stacked or side by side)

Silver screen (2.0X gain)Silver screen (2.0X gain)

Passive linear-polarized Passive linear-polarized glassesglasses

ExcellentExcellent Standard auditoriumStandard auditorium

~$75,000 for 2~$75,000 for 2ndnd projector projector

~$25,000 silver screen~$25,000 silver screen

~10 cent glasses~10 cent glasses

65 ft wide65 ft wide

(5 ft L)(5 ft L)

2- Basis : 20,000 lumens projector, 1.85:1 aspect ratio, 2.0X silver screen, 1.5X standard screen 5.0 ft L net (to the eye):

1– Projector requirements: min. 20,000 lumens and fast enough to support 96 FPS display

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Digital 3D StandardsDigital 3D Standards

No standards today- proprietary approaches aboundNo standards today- proprietary approaches abound The emerging SMPTE DC28 Digital Cinema distribution The emerging SMPTE DC28 Digital Cinema distribution

and presentation standards can support 3D and presentation standards can support 3D (2K resolution (2K resolution only)only) with relatively small extensions with relatively small extensions

SMPTE DC28 has formed a Stereoscopic Working Group SMPTE DC28 has formed a Stereoscopic Working Group DC28.40 (chair: Matt Cowan)DC28.40 (chair: Matt Cowan)

Core User Requirements:Core User Requirements:– Use existing DCDM & Packaging documents with min. extensionsUse existing DCDM & Packaging documents with min. extensions– Provide a single distribution master for all servers and presentation Provide a single distribution master for all servers and presentation

systemssystems– Support playing a single channel for 2D presentationSupport playing a single channel for 2D presentation– Keep file size as small as possible, without sacrificing qualityKeep file size as small as possible, without sacrificing quality– DCI spec- 2 streams must not exceed total bit-rate of 250 MbpsDCI spec- 2 streams must not exceed total bit-rate of 250 Mbps

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3D in Post Production3D in Post Production Lower light levelLower light level (~5 ft L vs 14 ft L) darkens the picture (~5 ft L vs 14 ft L) darkens the picture

– Requires unique color grading and/or unique display LUTRequires unique color grading and/or unique display LUT– Polarizers shift color, so must grade through themPolarizers shift color, so must grade through them

Dual-linkDual-link input to projector input to projector– 200 ns jitter tolerance between links200 ns jitter tolerance between links– YCYCBBCCRR (Rec. 709) or YC (Rec. 709) or YCxxCCzz (JPEG2000 ICT) (JPEG2000 ICT)

Packaging for 3D-Packaging for 3D- Will left and right eyes be encoded as separate or Will left and right eyes be encoded as separate or interleaved JP2K streams?interleaved JP2K streams?

Motion blurMotion blur helps double flash (96 Hz) presentation work helps double flash (96 Hz) presentation work– If motion blur is not used, triple flash (144 Hz) smoothes motion, but with If motion blur is not used, triple flash (144 Hz) smoothes motion, but with

tradeoff in display resolution (max.1628 x 880 for 1.85:1)tradeoff in display resolution (max.1628 x 880 for 1.85:1) Ghost cancellationGhost cancellation pre-processing is required for Z-Screen™ pre-processing is required for Z-Screen™

– Today, this is rendered into the masterToday, this is rendered into the master– Real D is building an in-line box between the server and the projectorReal D is building an in-line box between the server and the projector