Towards a 3D Immersive Visualization of the Tahoe Watershed Joseph - - PowerPoint PPT Presentation

▶
towards a 3d immersive visualization of the tahoe
SMART_READER_LITE
LIVE PREVIEW

Towards a 3D Immersive Visualization of the Tahoe Watershed Joseph - - PowerPoint PPT Presentation

Feb 24, 2024 136 likes •513 views

Towards a 3D Immersive Visualization of the Tahoe Watershed Joseph Mahsman, Staff Scientist Thomas Jackman, Interim Senior Director Center for Advanced Computation, Visualization, and Modeling Desert Research Institute Water as a Limiting

slide-1
SLIDE 1

Towards a 3D Immersive Visualization of the Tahoe Watershed

Joseph Mahsman, Staff Scientist Thomas Jackman, Interim Senior Director

Center for Advanced Computation, Visualization, and Modeling Desert Research Institute

slide-2
SLIDE 2

Water as a Limiting Resource

http://commons.wikimedia.org/wiki/File:Martis_Creek_Lake_and_Dam_summer.jpg

slide-3
SLIDE 3

Nevada Water Resources Data, Modeling, and Visualization (DMV)

slide-4
SLIDE 4

The Three Research Directions of DMV

Data Visualization Modeling

slide-5
SLIDE 5

Analyzing Massive Amounts of Data

slide-6
SLIDE 6

Planetary Terrain Visualization for VR

slide-7
SLIDE 7

SCIENTIFIC VISUALIZATION AND VIRTUAL REALITY

slide-8
SLIDE 8

2D and 3D Visualization

slide-9
SLIDE 9

Visualization in a Virtual Reality Enclosure

slide-10
SLIDE 10

DRIVE6

  • Six stereo walls
  • 12x 1900x1280 projectors
  • 12x compute/graphics nodes

– 2x quad core Intel CPUs – 16 GB RAM – NVIDIA Quadro FX 5800

slide-11
SLIDE 11

VR & Outreach

slide-12
SLIDE 12

VR & Planning

slide-13
SLIDE 13

VR & Simulation

  • R. Hoang, et al. VFire: Immersive wildfire simulation and visualization. Computers & Graphics, 34(6):655-664, 2010.
slide-14
SLIDE 14

VR & Engineering

  • N. Govindaraju, et al. Parallel Occlusion Culling for Interactive Walkthroughs using Multiple GPUs. http://gamma.cs.unc.edu/SWITCH
slide-15
SLIDE 15

VR & Data Analysis

Justin Huntington, DRI

slide-16
SLIDE 16

PLANETARY TERRAIN VISUALIZATION

slide-17
SLIDE 17

Hesperian

  • J. Mahsman. Projective Grid Mapping for Planetary Terrain Rendering. University of Nevada, Reno, 2010.
slide-18
SLIDE 18

Hesperian

  • Planetary approach
  • GPU-based terrain construction
slide-19
SLIDE 19

Planar vs Ellipsoidal Terrain

  • Digital elevation models
  • Two terrain approaches

– Offset from a plane – Offset from a sphere

slide-20
SLIDE 20

Advantages of Planetary Terrain

  • Data in context
  • Global to local transition
  • Planet Curvature
slide-21
SLIDE 21

Drawbacks of Planetary Terrain

  • Global coordinate systems
  • Data reprojection
slide-22
SLIDE 22

GPU-based Terrain Construction

slide-23
SLIDE 23

GPU-based Terrain Texturing

slide-24
SLIDE 24

Advantages of Hesperian’s GPU-based Construction

  • Continuous level of detail
slide-25
SLIDE 25

Advantages of Hesperian’s GPU-based Construction

  • Multiple map projections
slide-26
SLIDE 26

Advantages of Hesperian’s GPU-based Construction

  • Multiple map projections
slide-27
SLIDE 27

Advantages of Hesperian’s GPU-based Construction

  • Immediate raster display
slide-28
SLIDE 28

Drawbacks of Hesperian’s GPU-based Construction

  • No simulation
  • Precision artifacts with map projections
slide-29
SLIDE 29

DMV Phase I Improvements

  • Arbitrary Planetary Bodies
slide-30
SLIDE 30

DMV Phase I Improvements

  • Streaming from ArcGIS Server
slide-31
SLIDE 31

DMV Phase II

  • Terrain database

– Streaming of large datasets – Combine with immediacy of display

slide-32
SLIDE 32

DMV Phase II

  • Vector data

Justin Huntington, DRI

slide-33
SLIDE 33

DMV Phase II

  • Time varying data

Justin Huntington, DRI

slide-34
SLIDE 34

Virtual Reality and Planetary Terrain

slide-35
SLIDE 35
slide-36
SLIDE 36
slide-37
SLIDE 37