Interrogative Visualization of Volumetric

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Interrogative Visualization of Volumetric
Manifold Data

• Chandrajit L. Bajaj
• Shastra Lab Visualization Center
• Purdue University

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Network Architecture
SP2
INTEL PARAGON
WS
MASSIVE STORAGE
FDDI Ring
Campus FDDI Backbone
A T M
A T M
F D D I
H I P P I
F D D I
F D D I
H I P P I
NSC Router
CISCO Lighstream
ATM Switch (CS)
ATM Switch (PUCC)
WS
WS
WS
WS
WS
WS
Ethernet
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Multivariate Data Reduction
Pressure
x Velocity
Original Data (2869 triangles)
3 Error (1356 triangles)
Data Courtesy Lawrence Livermore National
Laboratory
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Multivariate Data Reduction
Original Data (4846 triangles)
3 Error (2384 triangles)
Data Courtesty Space Science and Engineering
Center
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What Is Interrogative Visualization ?

• Domain Data Acquisition
• Scan data from CT/MRI/Microscopy/Laser
• Domain creation tools
• Data Synthesis Computation
• Reconstruction, finite element modeling
• Display, Querying Analysis
• Interactive rendering of graphics primitives
• Extracting quantitative information (metric,
  combinatorial, topological)

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Interrogative Visualization
Data Synthesis Computation
Workstation
Workstation
Servers
Display, Querying Analysis
Domain Data Acquisition
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Why Interrogative Visualization ?

• Exploratory
• Searching, querying a data set for interesting
  features
• Time-dependent Phenomena
• Static images may not reveal the time-dependent
  structure of the data
• Validation
• Comparing approximations of physical phenomena

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Experimental and Simulated Data

• Data Organization
• Structured
• Unstructured
• Scattered
• Time-varying

• Data Types
• Scalar
• Vector
• Tensor
• Multivariate
• Time-varying