Mixed reality benefits for design perception
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Mixed Reality Benefits For Design Perception. Phillip S. Dunston, Ph.D. and Xiangyu Wang Construction Engineering and Management School of Civil Engineering Purdue University, West Lafayette, IN

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Mixed Reality Benefits For Design Perception

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Mixed reality benefits for design perception

Mixed Reality Benefits For Design Perception

Phillip S. Dunston, Ph.D. and Xiangyu Wang

Construction Engineering and Management

School of Civil Engineering

Purdue University, West Lafayette, IN

Co-Authors: Mark Billinghurst, Ph. D. (Human Interface Technology Laboratory of New Zealand) and Ben Hampson (McKinstry Co., Seattle)

19th ISARC

Gaithersburg, MD

September 2002


Outline

Outline

  • Introduction

  • AR CAD system

  • Issues in Spatial Cognition

  • Experimental Methodology

  • Results Discussion

  • Conclusion and Future Directions


Introduction mixed reality

Introduction Mixed Reality

Mixed Reality (MR): an environment where real world and virtual world objects are presented together on a single display (Milgram & Kishino 1994; Milgram and Colquhoun 1999).


Introduction industrial ar applications

Introduction Industrial AR Applications

(Azuma et al. 2001 by courtesy of Siemens Corporate Research)

AR Viewing of Underground Utilities (Roberts et al. 2002)


Introduction

Introduction

We are here right now

Planning Phase

Conceptual Design

Design Phase

Construction Documents

(Plans and Specs)

Construction Phase

As-built Plans

Maintenance Phase

Information Interfaces Involved in the Project Life Cycle


Introduction1

Introduction

Mixed Reality

Augmented Reality

Focus on mechanical detailing

AR CAD System


Ar cad system hardware

AR CAD System Hardware

The AR CAD system consists of the following components

  • Modeling computer: Running AutoCAD or other modeling software.

  • AR computer: Running the Augmented Reality viewing software.

  • Video Camera: Logitech QuickCam Pro 3000.

Components of AR CAD Prototype


Ar cad system tracking technology

AR CAD System Tracking Technology

The Process of Video-Based Marker Detection and Overlay of Virtual Objects


Ar cad system tracking technology1

AR CAD System Tracking Technology

User View of Virtual Objects in Augmented Reality (AR) Scene


Ar cad system tracking technology2

AR CAD System Tracking Technology

User View of Virtual Objects in Augmented Reality (AR) Scene


Issues in spatial cognition

Issues in Spatial Cognition

  • Spatial cognition is the internalized reflection and reconstruction of space in thought (Hart and Moore, 1973).

  • Why explore spatial cognition?

    • To understand the structure (coding) of the mental models and the process of utilizing those mental models (decoding).

    • To most efficiently present and effect spatial information via the human-computer interface.


Issues in spatial cognition main process

Issues in Spatial CognitionMain Process

Main Processes of Human Spatial Cognition

  • Extracting process: obtaining spatial information from physical space.

  • Storage or encoding process: building a memory representation from visual perception.

  • Decoding process: retrieving information from memory for decision making.


Issues in spatial cognition cognition cost

Issues in Spatial CognitionCognition Cost

Cognition Cost

Indication of the effort required by different mental transformations associated with changes and factors involved in switching viewing perspectives.


Issues in spatial cognition viewpoint comparison

Issues in Spatial CognitionViewpoint Comparison

Viewpoint Comparison between AR and AutoCAD


Experimental methodology objective

Experimental MethodologyObjective

Primary Objective:

To determine whether standard AutoCAD or AR CAD (AutoCAD + AR view) is more effective in the task of conflict detection with respect to the cognition cost associated with scene/perspective changes.


Experimental methodology interference detection

Experimental Methodology Interference Detection

Wire Frame Representation of Object Interferences


Results discussion

Results Discussion

= Estimated time value


Results discussion1

Results Discussion

Mean and Median Value of Each Combination


Conclusion and future directions

Conclusion and Future Directions

  • Conclusion

    • AR CAD can be a worthwhile viewer assistant for identifying interferences without increasing a detailer’s overall time due to the cognition cost associated with perspective switching.

  • Future Directions

    • Continued exploration of human interface issues, e.g., spatial cognition

    • Computer Supported Cooperative Work (CSCW)


Conclusion and future directions1

Conclusion and Future Directions

Collaborative work Concept by Andrei State at University of North Carolina at Chapel Hill


Mixed reality benefits for design perception

Questions?

Dr. Phillip S. Dunston

765-494-0640

[email protected]

Mr. Xiangyu Wang

[email protected]


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