26-03-2014, 02:48 PM
3D-TELEVISION
3D-TELEVISION.ppt (Size: 1.01 MB / Downloads: 20)
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 3DTV
A principle known since 1908
Based on “capturing a scene from different angles”
And then reverse projection from corresponding angles
Lenslet arrays
Variants can be classified under “holographic techniques'
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