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Yinggang Li * , Chi-Wing Fu + , Andrew Hanson * Department of Computer Science * Indiana University + Hong Kong Universi

Scalable WIM : Effective Exploration in Large-Scale Astrophysical Environments . Yinggang Li * , Chi-Wing Fu + , Andrew Hanson * Department of Computer Science * Indiana University + Hong Kong University of Science & Technology. Travel 13 Billion Light Year Space. Using Miniature Map in VR.

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Yinggang Li * , Chi-Wing Fu + , Andrew Hanson * Department of Computer Science * Indiana University + Hong Kong Universi

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  1. Scalable WIM: Effective Exploration in Large-Scale Astrophysical Environments Yinggang Li*, Chi-Wing Fu+, Andrew Hanson* Department of Computer Science *Indiana University +Hong Kong University of Science & Technology

  2. Travel 13 Billion Light Year Space

  3. Using Miniature Map in VR • Linearly Scaled Down World • manipulating the point-of-view through metaphor • Help travel/wayfinding in bounded environment.

  4. WIM Map for Space Traveler

  5. System Design Challenges • Cover Scales and Sparsity of Universe • Fit into Normalized Depth Buffer (Level-of-Detail)

  6. User Interaction Challenges • Adaptive Speed for fast and smooth travel • Global/ Local Context Awareness

  7. Key Features of Scalable WIM • Rapid transformation of positions and vectors at any arbitrary scale. World Space Power Scaling • Providing a consistent and hierarchical structure for the unbounded sparse environment. Power Cues, MST • Context Knowledge for distance, scales, motion & orientation perception Overview Map, Eye Space Remapping …

  8. Foundation developed for the mechanics of multi-scale visualization. • A Transparently Scalable Visualization Architecture for Exploring the Universe,Chi-Wing Fu and Andrew J. Hanson • Very Large Scale Visualization Methods for Astrophysical DataAndrew J. Hanson, Chi-Wing Fu, and E.A. Wernert • Part of Solar Journey project supported in part by NASA grants NAG5-8163, NAG5-11999, NAG5-13558, and SGI

  9. Scalable WIM: A 3D Map System

  10. Design and Implementation ContinuouslyScaling WIM 3rd person view Immersive 1st person view

  11. 1 Unit eye space = world space unit in meter df Power Spatial Scaling • Power Scaled Coordinates (PSC) • Map user control to the exponential power • Linear adjusting current spatial scale SWIM • Camera setting is unaffected during scaling • Linear scaling the entire world space relative to the current scale SWIM

  12. Context Cues Power Cube: Nested and Centered Proximity Cue: Dynamic MST Overview Map: Context, Scale manipulation

  13. Context Cues Nested Power Cylinder Proximity Cue: Projection Overview Map

  14. Context Cues Landmark Reference Adaptive Reference

  15. Logarithmic Space Mapping Logarithmically mapped Eye Space LogSky

  16. Navigation Model • The Select-and-Go • Spatial Scaling • Path-based

  17. Path Planning Logarithmically mapped Eye Space Linear Eye Space

  18. Summary • User interface design principles for exploring sparse space of large scales. • 3D Scalable World-In-Miniature map incorporates continuous spatial scaling to assist travel. • Context cues customized for wayfinding in virtual astrophysical exploration.

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