3D MAPPING FORUM - Recent...
Transcript of 3D MAPPING FORUM - Recent...
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3D MAPPING FORUMIntroduction to Modeling and Simulation in Real-Time 3D ArcGISMorakot Pilouk, Ph.D.Senior Software Developer/Consultant
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Source: http://en.memory-alpha.wikia.com/wiki/Holodeck
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Source: http://therundownlive.com/scientists-create-real-life-wireless-holodeck/
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Outline
• Modeling and Simulation- Modeling- Simulation
• ArcGIS Supporting Technologies- Real-Time GIS- ArcGIS 3D
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Modeling and Simulation
• A discipline based on - Computer Science, Systems Engineering, Software Engineering, Artificial Intelligence, and more”
• Means different things to different people• In this context:
- Aspects relating to space and time
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Modeling and Simulation Life Cycle
Real World Context Conceptual Model
Computer ModelResult
Validate Implement
Simulation
ModelingSimplify
Refinement
Execute
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Modeling
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Modeling
• The purposeful abstraction of reality - resides on the abstraction level
• The formal specification of - a conceptualization- assumptions- constraints
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What is a Model?
• Relating to 3D- Oxford:
- A three-dimensional representation of a person or thing or of a proposed structure, typically on a smaller scale than the original
- Webster:- A miniature representation of something
• Relating to Behavior or Process- Oxford:
- A simplified description, especially a mathematical one, of a system or process, to assist calculations and predictions
- Webster:- A system of postulates, data, and inferences presented as a mathematical description of an
entity or state of affairs
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A Model
• A representation of some key aspects of the subject• Captures the essential aspects of the subject• May not represent other aspects well• May have some simplifications or generalizations
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Model Examples
• Schematics diagram of a physical network
- Simplified/generalized- Misrepresents some aspects, e.g.
distances, locations- Captures the connectivity
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Model Examples
• Mathematical models
See: http://www.math.rug.nl/models/
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Model Examples
• Physical models
See: http://www.3dsystems.com/3d-printers/personal/cubex
A 3D printer
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Model Examples
• Terrain Model
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Model Examples
Solid Terrain Modeling (www.stm-usa.com)
Sand Table by Simtable(www.simtable.com)
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Model Examples
• Touch table
3D Topographic Map Table by Applied Minds and Northrop Grumman
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Model Examples
• Vehicles• Human figures• Plants
https://3dwarehouse.sketchup.com
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Acquiring Digital Models
• Digitizing/Scanning- LiDar- Sonar- Manual
• Digital Sculpting• Automatically generated
- Stereo fusion- Procedural
www.uav-lidar.com
Motion Capture: http://www.capturelab.com/
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Model Behaviors
• Controlled by human - using input from hardware
• Controlled by software – a model may be controlled by other models- Artificial Intelligence- Mathematical model (e.g. Physics model)
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Simulation
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Simulation
• An execution of a model over time• Resides on the implementation level
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Why using Simulations
• Are cheaper and safer than- Actual exercises- Physical prototypes
• Are more realistic than traditional experiments• Can be conducted faster or slower than real time• Allow setting up a coherent synthetic environment
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Simulation Advantages
• Players can practice in a safe, protected environment• Players can interact among one another• Players may be:
- Human, computer controlled or mixed
• Observers can observe without distracting the players• Supervisors can assist, guide, assess• Scene/scenarios can be selected or adjusted
- Supports what-if
• Repeatable• Comparable
- E.g. compared with previous runs
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Elements of Simulation
• Process- weather, traffic, lighting, wind
• Procedure- steps of operation
• Subject- things to practice on
Source: Meller G. A typology of simulators for medical education. J Digital Imaging, 1997 Aug: 10
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Type of Simulators
• Passive- Provides element of realism – scene decorators, base-map
• Active- Elements change over time- Changes driven by:
- Sequence of snapshots- Calculations- Combination of the above (e.g. tweening, dead-reckoning, interpolation)
• Interactive- Elements change in response to player, e.g. agent-based, AI
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Fidelity of Simulation
• Low fidelity- Simple simulation- Individual player- Involves only a few elements- Focus on specific subject
• High fidelity- Complex simulation- Involves many elements, passive, active, and interactive- Involves many subject matter experts- Involves many players
Adapted from: http://www.faculty.londondeanery.ac.uk/
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Collecting Data for Simulation Project
• Too many data points will overload the system- Poor performance- Require hardware sizing adequately
- NVIDIA Quadro K6000 with 2800+ cores, $4,500+- Storage capacity- Data communication bandwidth
• Sparse data points- Reduce fidelity of the representation and simulation- Not enough realism
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System Components
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Inputs
• Keyboard• Mouse• Touch screen• Joystick• Steering wheel• Weapon interface• Eye/head tracking• Motion/Gesture
- Kinect- Leap Motion- Myo Armband
• Microphone
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Inputs – IoT Sensors
• Air quality – airqualityegg.com• Atmospheric Pressure – pressurenet.io• CO2
• Temperature• Humidity• Light• Sound• …
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Outputs
• 3D Visualization- Head-mounted Display- Monitors- Projectors- Hologram
• 3D Sounds- Speakers, headphones
• Haptic• Scent• Air flow
http://tradeshowhologram.com/
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Integrated Inputs and Outputs
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Environment/Platform
• Touch table• Sand table• CAVE
- Northrop Grumman VIPE
• Holodeck
Source: https://www.evl.uic.edu/core.php?mod=4&type=1&indi=424
Source: http://therundownlive.com/scientists-create-real-life-wireless-holodeck/
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Software Components• Modeling
- Scene/Environment authoring- 3D base-maps- Behavior control – simulation engine
- Repast/ArcGIS Agent Analyst- NetLogo/AgenScript- Swarm- Agent-based Modeling (ABM)
- Data logger/recorder
• Real-time analytics- Geofencing- Trigger- Alert- …
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GeoEvent Extension
ArcGIS Server
YourApplications
Stream Layer
Map ServicesFeature Services
Feature Layer
feature layers
Update a FeatureAdd a Feature
EGDB
Polling(Pull)
Stream Services
Send Features to a Stream Service
Data Communication
• Communication protocols- Distributed Interactive Simulation (DIS) – IEEE 1278- High Level Architecture (HLA) – IEEE 1516- Test and Training Enabling Architecture (TENA)- …
• Real-time data streaming- Positions- Orientations- States
• Messaging• Time synchronization
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Simulation Authoring
• Unit/Track creation- Unit catalog- Map/Scene- Drag and drop unit onto map- Track authoring- Unit type- Terrain factor, e.g. elevation, slope, type of ground cover
• Track playback tool• Tracks orchestration
- Timeline placement- Time synchronization
• Simulation recording tool
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Questions and Answers
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Selected 3D Sessions
• 3D Analysis: An Overview - Tue 7/21/2015 08:30 AM - 09:45 AM Room 10- Thu 7/23/2015 08:30 AM - 09:45 AM Ballroom 06 E
• 3D Cartographic Techniques: An Introduction - Tue 7/21/2015 08:30 AM - 09:45 AM Room 31 B - Thu 7/23/2015 03:15 PM - 04:30 PM Room 17 A
• Creating 3D Campuses - Tue 7/21/2015 03:15 PM - 04:30 PM Room 14 A
• 3D Analyst: An Introduction - Wed 7/22/2015 08:30 AM - 09:45 AM Room 02
• ArcGIS API for JavaScript: Building 3D Web Apps - Wed 7/22/2015 08:30 AM - 09:45 AM Room 10
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Selected 3D Sessions
• Working with 3D Analyst and CityEngine- Wed 7/22/2015 08:30 AM - 09:45 AM Room 14 A
• ArcGIS for 3D Cities: An Introduction - Wed 7/22/2015 01:30 PM - 02:45 PM Room 15 A- Thu 7/23/2015 01:30 PM - 02:45 PM Room 05 B
• Advanced workflows for creating 3D Web Scenes in ArcGIS Online - Wed 7/22/2015 03:15 PM - 04:30 PM Room 14 B
• Sharing 3D Content on the Web - Wed 7/22/2015 03:15 PM - 04:30 PM Room 15 A
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Real-Time GIS Sessions• Real-Time GIS: GeoEvent Extension
- Tue 10:15-11:30am, Room 17 A- Wed 10:15-11:30am, Room 14 B
• Real-Time GIS: Leveraging Stream Services- Tue 8:30-9:45am, Room 01 A/B- Wed 8:30-9:45am, Ballroom 06 D
• Real-Time GIS: Applying Real-Time Analytics- Tue 10:15-11:30am, Room 15 B- Wed 8:30-9:45am, Room 14 B
• Real-Time GIS Use Cases and Implementation Patterns- Tue 2:30-3:15PM, Demo Theater 6 - Geodata
• ArcGIS Intelligence: Discern Activities of Interest through Advanced Analytics- Wed 10:15-11:30am, Omni Ballroom A/B
• Real-Time GIS: The Road Ahead- Wed 1:30-2:45pm, Room 14 B
• Real-Time GIS: Best Practices- Thu 8:30-9:45am, Room 14 B
• Real-Time GIS for Asset Readiness, Event Preparation, and Intervention- Thu 8:30-9:45am, Room 29 C
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