A High Resolution Urban and Underground Model Generator

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A High Resolution Urban and Underground Model
Generator

• John Mann (jmann_at_ara.com)
• Mary Ann Pigora
• Matt Kraus
• Applied Research Associates, Inc.
• Julio De La Cruz
• Todd Kohler
• US Army RDECOM

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U2MG Project Overview
Urban and Underground Model Generator (U2MG)
Terra Vista plugin and stand-alone editor
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Project Goals

• Address need for rapid generation of detailed
  urban models
• Provide models in widely used formats
• Generate models with structural properties to
  support physics-based modeling
• Leverage existing model generation capabilities

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Product Line Architecture

• Leveraged technology for modeling fixed targets
  (buildings, bunkers, tunnels)
• Extensible component architecture

Components
SiteGen
SiteGIS
SiteVis
SiteNet
SiteCalc
Component Support
Common Visualization System
Common Editor
Calc Controller
Common Mapping Module
Defeat Model Framework
Engineering Modules
Common Editor Dialogs
Physical Model Interrogator
Model Generator
Damaged Model Generator
Component Services
Database Services
ACIS Solid Modeling
XML Archive Services
Runtime Services
3D Model Generator
GUI Services
Repository Components
Component Models
Environment Repository
Specification Sheets
Weapon Repository
Calculation Results
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High Resolution Buildings

• Interior elements
• Walls, apertures, columns, beams, stairs
• Structurally accurate
• Material properties
• Structurally stable
• Visual representation
• Texture maps
• Element dimensions

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Building Types

• Geotypical (plugin)
• Auto-generated from simple inputs
• Rectangular, courtyard, H, U, L, T, plus shaped
• Office, warehouse, manufacturing, military
• Geospecific (editor)
• User creates building using editor
• Arbitrary shapes, interior layouts
• Custom material properties

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Generating Buildings
Generated Buildings in Terra Vista

• U2MG generates XML from areal, user inputs
• Add detail in U2MG editor
• Terra Vista creates 3D model from XML
• Terra Vista database stores structural data

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Building Editor

• Model elements self validate
• Structural validation
• Proper placement of elements
• Element snapping
• Windows snap to walls
• Walls snap to adjacent walls
• Grid and construction lines
• Properties can be changed with multi-select

• Floor plan created in U2MG editor

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Automated Structural Designer

• Editor gives user this layout for both stories
  of a 2-story bldg
• User desires layout modification
• User deletes all columns N-S beams from 2nd
  story
• ASD automatically resizes beams to correct
  specification

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Visual Representation

• U2MG stores annotated
• geometry in XML
• format

3D models are created from XML
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File Formats

• Native format is XML
• Output to
• MES rdr
• UHRB
• VRML
• OpenFlight
• 30 run time formats supported by Terra Vista

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Underground Models

• Tunnels, caves, subways
• Tunnel layout cross section
• Modeling of geologic layers
• Completed model is integrated with terrain

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Damage Server Simulation

• Damage Server leverages U2MG buildings
• Structural data is used by weapons effects code
• More flexible and higher fidelity than look-up
  tables

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Future Work CAD Import
Model viewed in AutoCAD
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QuestionsJohn Mann (jmann_at_ara.com)Applied
Research Associates