Full HTML for

Basic foilset 3D Collaborative GIS in CIV Project

Given by Marek Podgorny at Rome Laboratory CIV Final Review on 9 April 98. Foils prepared 9 April 98
Outside Index Summary of Material

Key Features:
High-End Data Visualization
Fly-Through Capability
Database Access
Discrete Event Simulation
Dynamic Layer Switching
Synchronized or Independent Views
Interactive Objects

Table of Contents for full HTML of 3D Collaborative GIS in CIV Project

 Denote Foils where Image Critical
Denote Foils where HTML is sufficient
1 CIV 3D Collaborative Environment
2 3D Geographic Information System
3 Core Technologies
4 CIV Applications
5 Collaborative 3D GIS
6 Collaborative 3D GIS
7 Digital Elevation Models
8 Satellite Imagery and Maps
9 Collaborative 3D GIS
10 Database Support
11 TIGER/Line Datasets
12 TIGER/Line Data Definition
13 TIGER/Line Data
14 Collaborative 3D GIS
15 GIS Extensions
16 Operations in the World
17 Interactive Objects
18 Shared State
19 Synchronization
20 Advanced Data Processing Techniques
21 Data Transformation Process
22 Discrete Event Simulation
23 Cooperation with TANGOSim
24 Control Center
25 Architecture

Outside Index Summary of Material

HTML version of Basic Foils prepared 9 April 98

Foil 1 CIV 3D Collaborative Environment

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
Marek Podgorny Rome Laboratory Final CIV Review April 8 1998 NPAC Syracuse University
HTML version of Basic Foils prepared 9 April 98

Foil 2 3D Geographic Information System

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
Key Features:
High-End Data Visualization
Fly-Through Capability
Database Access
Discrete Event Simulation
Dynamic Layer Switching
Synchronized or Independent Views
Interactive Objects
HTML version of Basic Foils prepared 9 April 98

Foil 3 Core Technologies

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
Open Inventor
Adaptive Communication Environment (ACE)
TANGO
TANGOsim
Xt Intrinsics and Motif
Standard Template Library
HTML version of Basic Foils prepared 9 April 98

Foil 4 CIV Applications

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
3D GIS
  • Interactive Journey
  • Radar Operator Console, part of Command Control
  • 3D Weather visualization
3D Collaborative Environments
  • Visible Human: visualization of reconstructed human organs
  • Electromagnetic visualization
HTML version of Basic Foils prepared 9 April 98

Foil 5 Collaborative 3D GIS

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
Focus: high-end terrain visualization with GIS overlays, integrated with Web
  • Open Inventor Web 3D viewer
    • initially designed as terrain viewer, later generalized to support general 3D visualization
    • as a browser, the viewer exceeds VRML browser functionality
    • supports both synchronous and independent views of data
    • supports multiple windows for different data layers
  • Multi-user functionality provided by TANGO framework
  • Support for steregraphic viewing
HTML version of Basic Foils prepared 9 April 98

Foil 6 Collaborative 3D GIS

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
Terrain and other GIS data stored on HTTP server and fetched over the network via HTTP protocol
Handles multiple types of GIS data
  • satellite imagery, topographic maps, various geological characteristics (i.e., vegetation, geological resources, and water concentration) and arbitrary 3D objects are visualized (complete database for NYS).
Wavelet compression for both DEM and satellite images, reduces size of data by a factor of 32 for DEMs and 30-60 for textures.
Adaptive mesh simplification technique results in rendering time reduction by a factor of 40.
Internal caching system with pre-processing
Level-of-detail rendering
HTML version of Basic Foils prepared 9 April 98

Foil 7 Digital Elevation Models

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
A DEM consists of a sampled array of elevations for a number of ground positions that are normally at regularly spaced intervals. These intervals determine the spatial resolution of the DEM.
The USGS offers DEM in Public Domain having a spatial resolution of 90 m whereas commercial organizations have the DEM's at 30 m.
HTML version of Basic Foils prepared 9 April 98

Foil 8 Satellite Imagery and Maps

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
Satellite imagery is 29 meters resolution multi-spectral coverage
  • We have purchased and processed 12 swaths covering entire New York state
  • The data contains 7 spectral bands, 3 visible, 4 infrared, that can be combined into color images
    • ER Mapper used to create color images for GIS viewer
    • "Special effects" can be obtained by mixing 7 bands in different proportions
Maps: problematic as there are no free data sources
  • DoD does not have good USA coverage (!)
  • Commercial raster maps acquired and processed
HTML version of Basic Foils prepared 9 April 98

Foil 9 Collaborative 3D GIS

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
Database support: all locations are geo-referenced. Supports "pickable" mode. A "pick" spawns a spatial database query.
Database backend implemented using Informix/Illustra object-relational database
Query refinement via web browser interface
  • programmable selection of canned queries
Database contents:
  • TIGER/Line data, US census data, business data, web domain name database, ..... (complete database for NYS)
Viewer objects can have associated HTML links
HTML version of Basic Foils prepared 9 April 98

Foil 10 Database Support

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
Two-level Access
  • The Nearest Features Window
  • Web Browser Interface
Illustra DBMS by Informix
Spatial Data Blade - Geo-referenced queries
Web Data Blade - HTTP interface
  • Census Data
  • Roadfinder based on TIGER/Line
HTML version of Basic Foils prepared 9 April 98

Foil 11 TIGER/Line Datasets

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
Topographically Integrated Geographic Encoding and Referencing (TIGER) is the system developed by the U.S. Census bureau for mapping purposes
TIGER/Line files are extracts of selected geographic and cartographic information from the TIGER database.
TIGER/Line coverage is available for the entire United States of America.
HTML version of Basic Foils prepared 9 April 98

Foil 12 TIGER/Line Data Definition

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
Line features
  • Roads, Railroads, Hydrography, Miscellaneous transportation features and selected power and pipe lines, Boundaries
Landmark features
  • schools, churches, public buildings, parks, factories
Polygon features
  • Geographic entity codes for areas used to tabulate the 1990 census statistical data and current geographic areas
HTML version of Basic Foils prepared 9 April 98

Foil 13 TIGER/Line Data

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
Public domain data loaded into Illustra database along with census data
Illustra supports 2D and 3D spatial queries
2D and 3D viewers support dynamically built overlays constructed on demand from the TIGER/Line and census data
Graphical interface for spatial queries spawned from the 3D viewer
HTML version of Basic Foils prepared 9 April 98

Foil 14 Collaborative 3D GIS

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
Extended scene model
  • (Compatible) scene description language
  • Support for dynamic addition of objects to the scene.
  • Support for WWW anchor (link) functionality
  • Objects behavior can be externally controlled - support for simulation and "3D streaming"
  • Support for compound objects, translation vectors
    • creates assembly/disassembly capability
  • Support for linked object/camera duo (object tracing capability)
  • Synchronous and asynchronous master/slave relationship, re-sync mode (all within TANGO framework)
HTML version of Basic Foils prepared 9 April 98

Foil 15 GIS Extensions

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
World Description File Format
  • Based on tags (e.g. GIS_Terrain)
  • Compliant to OI format (SoInfo nodes)
Dynamic World Building
  • Dependent on user's selection
World Extensions
  • Automatically added less detailed areas
Movement Constraints
  • No floating-in-the-void effect
HTML version of Basic Foils prepared 9 April 98

Foil 16 Operations in the World

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
Picking
  • Database Access
  • Dragging Objects
  • Picking Objects and Areas
Navigation
  • Six-degree Freedom of Movement
  • Following of the Master or Independent Exploration
HTML version of Basic Foils prepared 9 April 98

Foil 17 Interactive Objects

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
Hot Spots
  • A geo-referenced area with an associated URL
Pickable Object
  • A VRML or OI model with an associated URL
URLs are sent to a Web Browser
Draggable Objects
  • A VRML or OI model that can be moved by the user
HTML version of Basic Foils prepared 9 April 98

Foil 18 Shared State

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
Metadata about Visualized World
Camera Parameters
Hot Spots
Draggable Objcts
Pickable Objects
Static and Moving Objects
  • Initial State Issue
  • Consistency
  • Efficiency
HTML version of Basic Foils prepared 9 April 98

Foil 19 Synchronization

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
Events are translated into compact messages and broadcast to other participants
Communication classes
Dynamic Viewer Protocol
Control Center Protocol
Reliable Transport Protocol - TCP
HTML version of Basic Foils prepared 9 April 98

Foil 20 Advanced Data Processing Techniques

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
Wavelet Compression (Embedded Zerotree Algorithm)
Adaptive Mesh Simplification
Triangulation
Discrete Level Of Detail
World Represented as Triangulated Irregular Network (TIN)
HTML version of Basic Foils prepared 9 April 98

Foil 21 Data Transformation Process

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
Server
Viewer
HTML version of Basic Foils prepared 9 April 98

Foil 22 Discrete Event Simulation

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
Cooperation with TANGOsim
  • Notion of Virtual Time (4th dimension)
  • Scripting language for scenario implementation
  • Interoperability with different kinds of applications by use of Stubs
Static and Moving Objects (VRML or OI models)
  • this corresponds to "streaming VRML"
Follow-Up Mode ("attach to object")
TANGOsim vs DIS
HTML version of Basic Foils prepared 9 April 98

Foil 23 Cooperation with TANGOSim

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
TANGOsim
HTML version of Basic Foils prepared 9 April 98

Foil 24 Control Center

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
Viewer Management
Communication with TANGO
Local Message Dispatching
Graphical User Interface
Overall World Map
HTML version of Basic Foils prepared 9 April 98

Foil 25 Architecture

From 3D Collaborative GIS in CIV Project Rome Laboratory CIV Final Review -- 9 April 98. *
Full HTML Index
Control Center
Other 3D GIS instances or TANGOsim
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