Time-varying volume visualization and compression

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Presentation transcript:

Time-varying volume visualization and compression Presented by Zhi Yuan 10/05/2012

Volume Rendering

Changes through time? Volume Animation Fly-through navigation Fly-around navigation Time-varying animation

Rendering Pipeline

Rendering Pipeline Problems caused by large scale dataset: Storing Visualization Transmission

Features we can utilize Redundancy (or Coherence) Statistical redundancy Spatial redundancy Temporal redundancy

Coherence Metrics Spatial Coherence Temporal Coherence

Rendering Acceleration Re-projection techniques: space-leaping Incremental ray-casting: ray coherence

Compression Methods Video-based Compression

Compression Methods bricks TSP (Time-Space Partition): spatial subdivision bricks

Compression Methods 4 time steps TSP (Time-Space Partition): temporal subdivision [0,3] [0,1] [2,3] T= 0 1 2 3 4 time steps

References:

End