3D-TELEVISION

Naveen Sihag

Technical Overview of Integrated 3DTV

Capture Representation Transmission Signal Processing Display

Applications Conclusion

3DTV Technical Overview

3D Scene

CaptureRepresentation Coding

Signal Conversion

DisplayTransmission

Its Replica

Observations

Stereoscopic 3DTV is quite an old concept Almost as old as its 2D counterpart

2D has flourished 3D “failed” to be popular

Stereoscopic 3D is simpler Based on human visual system and

perception Usually creates “mismatches” of various

3D cues Current research on stereoscopic

3DTV is mostly targeted to overcome such problems

An Overview of Candidate 3DTV Techniques

Stereoscopic 3DTV Simplest, based on “perception” Viewer discomfort Autostereoscopic Head-tracking stereoscopic

Holographic 3DTV Basic principle -1948, first holograms – 1960 Based on physics : duplication of light field Digital holographic techniques Holographic cameras Experimental holographic motion pictures – 1989 Still at basic reseach phase

Integral Imaging Based 3DTVA principle known since 1908Based on “capturing a scene from different angles”And then reverse projection from corresponding anglesLenslet arraysVariants can be classified under “holographic techniques”

3DTV Project -Technical Overview

3D Scene

Capture Representation Coding

Signal Conversion

DisplayTransmission

Its Replica

3DTV Project - Technical Overview - Capture

Multi-camera Single Camera Holographic Human Face and Body Specific Pattern Projection Other

3DTV Project -Technical Overview

3D Scene

Capture Representation Coding

Signal Conversion

DisplayTransmission

Its Replica

3DTV Project – Technical Overview - Scene Representation

Point Representation Based Surface Representation Based Volume Representation Based

Human Face and Body Specific Representations Object Specific Representations Cloth and Garment Representation

Rendering Issues Formats and Standardization Issues

DXF, OBJ, VRML, LWO, 3DS, 3DIF, U3D, Web3D, X3D, MPEG-4-AFX

Texture Representation and Rendering

3DTV Project -Technical Overview

3D Scene

Capture Representation Coding

Signal Conversion

DisplayTransmission

Its Replica

3DTV Project – Technical Overview-3D Coding

3D Coding Techniques: Holographic Signal Compression Multiview Video Coding Object-based coding 3D Mesh compression Dynamic Texture Coding Multiple Description Schemes Interactivity Issues Lightfield Compression Point-cloud Compression MPEG4-AFX, BIFS Interactivity Issues Compound Bit-stream Syntax Security and Rights Management

3DTV – Standardization Activities

Current Standardization Activities in 3DTV MPEG4-3DAV

Multiview Coding

3DTV Project -Technical Overview

3D Scene

Capture Representation Coding

Signal Conversion

DisplayTransmission

Its Replica

3DTV Project–Technical Overvieaw - Transport Techniques for 3DTV

Media Transport over IP networks QoS Controls

Protocols Media Synchronization RTP DCCP H.264 over RTP

Loss Concealment Techniques Channel Coding Issues Mobile 3DTV Applications

3DTV Project Technical Overview

3D Scene

Capture Representation Coding

Signal Conversion

DisplayTransmission

Its Replica

Review Mtg – Technical Overview - Signal Processing Issues

Modeling of Diffraction from a Systems Point of View Forward and Inverse Problems in Holographic 3DTV Signal Processing Problems in Different 3DTV Techniques

Holographic 3DTV Stereoscopic TV Integral Imaging Hybrid Techniques SAR techniques

3DTV Project -Technical Overview

3D Scene

Capture Representation Coding

Signal Conversion

DisplayTransmission

Its Replica

3DTV Project – Technical Overview – Display Techniques

Holographic Displays SLMs DMDs Acousto-optic Modulators

Stereoscopic Displays Autostereoscopic Displays Volumetric Pseudo-volumetric Head-mount displays

3DTV Technologies – Other Applications

Education, Training and Simulation Scientific Simulation and Visualization Medicine and Dentistry Cultural Heritage Technical Applications Market Applications Telepresence Entertainment and Game Industry Air Traffic Control Military Security Communications Computers

THANKS