Mixed Reality Benefits For Design Perception - PowerPoint PPT Presentation

Loading...

PPT – Mixed Reality Benefits For Design Perception PowerPoint presentation | free to download - id: 845901-NTFjN



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Mixed Reality Benefits For Design Perception

Description:

... an environment where real world and virtual world objects are ... AR CAD System Tracking Technology AR CAD System Tracking Technology AR CAD System ... – PowerPoint PPT presentation

Number of Views:82
Avg rating:3.0/5.0
Slides: 22
Provided by: wang1182
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Mixed Reality Benefits For Design Perception


1
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
2
Outline
  • Introduction
  • AR CAD system
  • Issues in Spatial Cognition
  • Experimental Methodology
  • Results Discussion
  • Conclusion and Future Directions

3
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).

4
Introduction Industrial AR
Applications
(Azuma et al. 2001 by courtesy of Siemens
Corporate Research)
AR Viewing of Underground Utilities (Roberts et
al. 2002)
5
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
6
Introduction
Mixed Reality
Augmented Reality
Focus on mechanical detailing
AR CAD System
7
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
8
AR CAD System Tracking Technology
The Process of Video-Based Marker Detection and
Overlay of Virtual Objects
9
AR CAD System Tracking Technology
User View of Virtual Objects in Augmented Reality
(AR) Scene
10
AR CAD System Tracking Technology
User View of Virtual Objects in Augmented Reality
(AR) Scene
11
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.

12
Issues in Spatial Cognition Main 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.

13
Issues in Spatial Cognition Cognition Cost
  • Cognition Cost
  • Indication of the effort required by different
    mental transformations associated with changes
    and factors involved in switching viewing
    perspectives.

14
Issues in Spatial Cognition Viewpoint
Comparison
Viewpoint Comparison between AR and AutoCAD
15
Experimental Methodology Objective
  • 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.

16
Experimental Methodology Interference Detection
Wire Frame Representation of Object Interferences
17
Results Discussion
Estimated time value
18
Results Discussion
Mean and Median Value of Each Combination
Combination Mean Value(sec) Median Value(sec)
AutoCADP1 196.75 134.50
AR CADP1 50.75 49.50
AutoCADP2 74.75 65.50
AR CADP2 28.50 27.00
19
Conclusion and Future Directions
  • Conclusion
  • AR CAD can be a worthwhile viewer assistant for
    identifying interferences without increasing a
    detailers 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)

20
Conclusion and Future Directions
  • Collaborative work Concept by Andrei State at
    University of North Carolina at Chapel Hill

21
  • Questions?
  • Dr. Phillip S. Dunston
  • 765-494-0640
  • dunston_at_purdue.edu
  • Mr. Xiangyu Wang
  • wang0_at_purdue.edu
About PowerShow.com