1. Daniel Stone Prof. Bruce H. Thomas
Task Complexity in Designing Physical Interfaces in Spatial Augmented Reality
Daniel Stone
Prof. Bruce H. Thomas

2. Overview Problem Addressed Aim and Hypothesis Background Research
Spatial Augmented Reality
Design in SAR
Constraint Based Design
Human Computer Interaction
Modelling and Prototyping
SAR Module Design
Desktop Module Design
User Study
Taking the Research Further
Acknowledgements
Summary
Questions

3. Problem Addressed Design of Physical User Interfaces Cost of Design
Automotive
Aircraft
TV Remote
Cost of Design
Physical Mock-ups/Models
Material Costs
Time of Design
Iterations

4. Aim and Hypothesis Make Physical UI Layout Spatially Intuitive
Test the effectiveness of SAR on Design Challenges
Provide Commercial Savings
Hypothesis
Users will complete the design task faster using SAR over Desktop

5. Spatial Augmented Reality
What is SAR
How SAR Works
Immersion and Perception
Commercial Applications
Appliance Design
Automotive Spot Welding
CAVE Systems

6. Design in SAR Why Design in SAR Existing Applications
Color Reproduction
Architectural Design
SoftAR
Product Appearance Evaluation
Adaptive Colour Marker

7. Constraint Based Design
Constraint vs Freeform
Constraints Used
Position (X,Y)
Quantity (Rows and Columns)
Padding
Mapping Constraints to Input Controller
Advantages of Constraint Based Approach

8. Human Computer Interaction
Investigated Design of UI Tools for Software Domain
Different Input Technologies
6DOF
Pointer Based
Spatial User Interfaces
Large Scale Modelling
Tangible CAD Design in SAR
SAR Does it Better

9. Modelling and Prototyping
Improving Prototyping through SAR
Easily Model Real World Space
Architectural Designs
Automotive Assembly Floor
Interactive Modelling
Quimo Interaction

10. SAR Module Design OpenGL Drawing to Plane
Projection Plane Mapped to Top Physical Surface
Constraint Based Drawing
Only Manipulate Six Parameters
Arduino Controller Input
Through Six Potentiometers

11. Desktop Module Design Using Unity Game Engine Uses Sprite Textures
Input via Sliders
Manipulation through Mouse
Each Slider Maps to a Potentiometer

12. User Study Within Participants/Repeated Measures Design
IV: SAR vs Desktop
DV: Time Taken
Accuracy
Preference
16 Participants
5 Trials on Each Platform

13. Taking the Research Further
Custom Hardware for Input Device
More Complex Design Task
Relationship between Platform Preference and Task Complexity
Larger Sample
Critique from Industry Designers

14. Acknowledgements Principal Supervisor SAR Programming Assistance
Prof Bruce H. Thomas
SAR Programming Assistance
Andrew Irlitti
James Baumeister
Tim Simon
Michael Marner
James Walsh
Arduino Setup
David Webb
Ethics and User Study Queries
James Baumeister
And all of the Wearable Computing Lab!

15. Summary SAR makes for intuitive spatial design
Rapid Prototyping using SAR can reduce costs and time to market
SAR can be better suited to design for some tasks over Desktop

16. Thank you for Listening
Questions?