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Evaluation of User Experience in Virtual Reality for Product Design
Asko Ellman Department of Mechanics and Design Tampere University of Technology Finland
Asko Ellman
Crecos seminar 2010
Otaniemi November 11-12
2
Main Goals for Cockpit Design Main goals for cabin design: • Visibility • Functionality • Ergonomics • Safety • Industrial design
Asko Ellman
Crecos seminar 2010
Otaniemi November 11-12
3
Design using Virtual Environments • Possibility to evaluate number of design alternatives •Evaluating the design in natural size • Sharing of information with number of people • Teleprecence
Asko Ellman
Crecos seminar 2010
Otaniemi November 11-
4
Human’s Mental Model in background
A human interprets world through his/hes senses:
• Vision
Experience, understanding
• Hearing • Posture sense • Sense of touch • Sense of smell • etc
Human’s mental model
Asko Ellman
Crecos seminar 2010
Otaniemi November 11-
5
Human’s Mental Model in background
Artificial senses need to be uniform enought
Uniform
• Vision
High immersion
• Hearing • Posture sense • Sense of touch • Sense of smell • etc
Simulator sickness Human’s mental model
Asko Ellman
Crecos seminar 2010
Contradiction
Otaniemi November 11-
6
Depth of Virtual Experience (Zelzer cubic) Virtual Reality What is meaningful level of VR for design?
Immersion Autonomy PC game CAD
Interaction
Asko Ellman
Crecos seminar 2010
Otaniemi November 11-
7
Real User and Virtual Cabin
Design quantity Visibility Functionality Ergonomics Industrial Design
Attributes of test setup Versatility Immersion Evaluation of Work Practicies Asko Ellman
Crecos seminar 2010
Otaniemi November 11-12
8
Combination of virtual and physical objects
Design quantity Visibility Functionality Ergonomics Industrial Design
Attributes of test setup Versatility Immersion Evaluation of Work Practicies Asko Ellman
Crecos seminar 2010
Otaniemi November 11-12
9
Haptics enables users to feel the virtual objects
Asko Ellman
Crecos seminar 2010
Otaniemi November 11-12
10
Real time simulator and motion platform enable users to make virtual work tasks
Asko Ellman
Crecos seminar 2010
Otaniemi November 11-12
11
Some problems with testing in VE
• Usually we are testing a dynamic set of work tasks done by human operator • We are finally evaluating humans experience in VE
Asko Ellman
Crecos seminar 2010
Research methods from humanistic sciences need to be applied, such as • work sociology • ethnography • user experience studies
Otaniemi November 11-12
12
Structure of Work Process in presented Sosiology based on activity theory
Tool
Outcome
Operator
= such as Excavation or harvesting
= User of the machine
Asko Ellman
= Mobile machine
Crecos seminar 2010
Otaniemi November 11-12
13
Interaction between Operator and Outcome
Tool Loading of user due to machine
= Mobile machine User Experience
Loading of machine due to user
Expertise
Operator Outcome
= User or Worker
Asko Ellman
= such as Excavation
Crecos seminar 2010
Otaniemi November 11-12
14
Roles of User and Designer in Design Process
Design Process
Work Process
Cockpit & Machine
Design Tool
Designer
Rules/ Norms
Asko Ellman
Community
Cockpit Plan
Operator
Div. of labour
Rules/ Norms
Crecos seminar 2010
Outcome
Community
Div. of labour
Otaniemi November 11-12
15
Test Setup Inspired by Etnography
Designer
Generally 5-7 user sample is enought
Observer
Operator
Asko Ellman
Crecos seminar 2010
Otaniemi November 11-12
16
Facets of User experience studies1
Human driven
Technology driven
Usability studies
Emotion & appealing (Kansei design)
Holistic Negative
Subjective Positive
UX
1
Hasselzahl and Tracinsky, 2006 User experience – a research agenda. Behaviour & Information technology, 25.
Asko Ellman
Work driven
Crecos seminar 2010
Dynamic Task situated Temporally bounded Otaniemi November 11-12