The Fidelity Required for Roadway Development and Evaluation

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The Fidelity Required for Roadway Development and
Evaluation
Development of Standardized Descriptions of
Driving Simulator Scenarios Human Factors
Considerations Workshop at TRB January 2005
Anuj K. Pradhan Human Performance
Laboratory University of Massachusetts, Amherst
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Introduction

• Ecological Validity/Fidelity of Visual Databases
• Different
• Simulator Platforms
• Approaches/Methodology for Creating Databases
• Development Tools
• Standardization Across Platforms

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Database Development

• Considerations for Roadway Development
• Graphical
• Resolution
• Shading
• Texture
• Terrain and Roadway
• Road Coordinates
• Lane Width
• Horizontal and Vertical Curvatures
• Visual Elements/Traffic Control Devices
• Signs
• Pavement Markings

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Graphical Resolution
50 feet distance
640X480 pixels
1024 X 768 pixels
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Graphical Resolution
300 feet distance
640X480 pixels
1024 X 768 pixels
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Graphical Resolution
1024 x 768
640 x 480
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Graphical Shading

• Shading
• Options
• Flat
• Gouraud
• Illuminated
• Effects of Shading on Viewers Perception
• Standardize Reporting Methods

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Graphical Shading - Types
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Graphical Shading - Types
Flat
Illuminated
Gouraud
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Graphical Shading - Types
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Graphical Textures

• Texture
• Texture Sources
• Texture Mapping
• Resolution
• Filters/Application

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Graphical Textures - Source
Building 1
Building 2
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GraphicalTexturesMapping, Resolution etc.
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GraphicalTexturesMapping, Resolution etc.
gtgt
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Signs

• Signs
• Texture or Polygons?
• Text Type, Size
• Anti-Aliasing

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Signs Antialiasing
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Signs Antialiasing
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Pavement Markings

• Pavement Markings
• Textures or Polygons?
• Z Buffering
• Standards for Markings

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Pavement Markings Textures vs. Polygons
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Pavement Markings Textures vs. Polygons
Video
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Database Development

• Bringing it all together
• High Fidelity in Virtual Environments
• Standardized Descriptions of Scenarios
• Standards and Vocabulary to Facilitate
  Replication

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Database Development

• Demonstration
• Central Artery/Tunnel Project (Big Dig) Boston

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Thank You

• Questions/Discussion