from single-frame rate to multi-frame rate systems · searis workshop at ieee vr 2008, 2008/03/09...
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Introduction MFR Basics Summary
From Single-Frame Rate toMulti-Frame Rate Systems
Jan P. Springer Bernd Frohlich
Bauhaus-Universitat Weimar
SEARIS Workshop at IEEE VR 2008, 2008/03/09 1 / 10
Introduction MFR Basics Summary
Observations for Complex Applications
High Frame Rates:I Object manipulation
I System control
Low(er) Frame Rates:
I Head tracking
I Navigation
SEARIS Workshop at IEEE VR 2008, 2008/03/09 4 / 10
Introduction MFR Basics Summary Video Properties
Multi-Frame Rate Basics
Slow client
Digitally composed image
Fast client
Client
Client
Master
Digital composition setup
SEARIS Workshop at IEEE VR 2008, 2008/03/09 5 / 10
Introduction MFR Basics Summary Video Properties
Multi-Frame Rate Basics
Slow client
Digitally composed image
Fast client
Client
Client
Master
Digital composition setup
SEARIS Workshop at IEEE VR 2008, 2008/03/09 5 / 10
Introduction MFR Basics Summary Video Properties
Multi-Frame Rate Basics
Slow client
Digitally composed image
Fast client
Client
Client
Master
Digital composition setup
SEARIS Workshop at IEEE VR 2008, 2008/03/09 5 / 10
Introduction MFR Basics Summary Video Properties
Video
SEARIS Workshop at IEEE VR 2008, 2008/03/09 6 / 10
Introduction MFR Basics Summary Video Properties
Properties
+ Fast user interaction
+ Maintains visual quality
+ Advanced techniquesI Interactive light manipulationI Volume rendering support
± Resource allocation
± Migration artifacts for “naıve” multi-frame rate rendering
± Navigation
SEARIS Workshop at IEEE VR 2008, 2008/03/09 7 / 10
Introduction MFR Basics Summary Video Properties
System Requirements
I Object-level granularityI Frameless rendering → pixel-level granularityI Object-level granularity already supported by scene graphs
I AsynchronicityI Buffer + meta information (e. g. camera parameters, object ids)I Parallel, asynchron render threadsI Sort-Last-support good starting point
I OrthogonalityI Acceleration methods (e. g. LOD, occl. culling)I Parallel rendering techniques
SEARIS Workshop at IEEE VR 2008, 2008/03/09 8 / 10
Introduction MFR Basics Summary
Future Work
I Multi-frame rate shadows
I Multi-frame rate ray tracing
I Improving navigation support
e. g. depth-image warping
SEARIS Workshop at IEEE VR 2008, 2008/03/09 9 / 10
Introduction MFR Basics Summary
Thank you for your attention.
SEARIS Workshop at IEEE VR 2008, 2008/03/09 10 / 10