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. Introduction.

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The fidelity required for roadway development and evaluation

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


Introduction

Introduction

  • Ecological Validity/Fidelity of Visual Databases

  • Different :

    • Simulator Platforms

    • Approaches/Methodology for Creating Databases

    • Development Tools

  • Standardization Across Platforms

University of Massachusetts


Database development

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

University of Massachusetts


Graphical resolution

Graphical: Resolution

50 feet distance

640X480 pixels

1024 X 768 pixels

University of Massachusetts


Graphical resolution1

Graphical: Resolution

300 feet distance

640X480 pixels

1024 X 768 pixels

University of Massachusetts


Graphical resolution2

Graphical: Resolution

1024 x 768

640 x 480

University of Massachusetts


Graphical shading

Graphical: Shading

  • Shading

    • Options

      • Flat

      • Gouraud

      • Illuminated

    • Effects of Shading on Viewers’ Perception

    • Standardize Reporting Methods

University of Massachusetts


Graphical shading types

Graphical: Shading - Types

University of Massachusetts


Graphical shading types1

Graphical: Shading - Types

Flat

Illuminated

Gouraud

University of Massachusetts


Graphical shading types2

Graphical: Shading - Types

University of Massachusetts


Graphical textures

Graphical: Textures

  • Texture

    • Texture Sources

    • Texture Mapping

      • Resolution

      • Filters/Application

University of Massachusetts


Graphical textures source

Graphical: Textures - Source

Building 1

Building 2

University of Massachusetts


Graphical textures mapping resolution etc

Graphical:TexturesMapping, Resolution etc.

University of Massachusetts


Graphical textures mapping resolution etc1

Graphical:TexturesMapping, Resolution etc.

>>

University of Massachusetts


Signs

Signs

  • Signs

    • Texture or Polygons?

    • Text – Type, Size

    • Anti-Aliasing

University of Massachusetts


Signs antialiasing

Signs: Antialiasing

University of Massachusetts


Signs antialiasing1

Signs: Antialiasing

University of Massachusetts


Pavement markings

Pavement Markings

  • Pavement Markings

    • Textures or Polygons?

    • Z – Buffering

    • Standards for Markings

University of Massachusetts


Pavement markings textures vs polygons

Pavement Markings: Textures vs. Polygons

University of Massachusetts


Pavement markings textures vs polygons1

Pavement Markings: Textures vs. Polygons

Video

University of Massachusetts


Database development1

Database Development

  • Bringing it all together

    • High Fidelity in Virtual Environments

    • Standardized Descriptions of Scenarios

    • Standards and Vocabulary to Facilitate Replication

University of Massachusetts


Database development2

Database Development

  • Demonstration

    • Central Artery/Tunnel Project (Big Dig) Boston

University of Massachusetts


Thank you

Thank You

  • Questions/Discussion

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