Shape Changing Interfaces
CPSC 6140: Human Computer Interaction
Group 7:
Bhargav Golla
Mit Dave
Nitya Sai Ginjupalli
INTRoduction
Flexible Displays and shape changing interfaces
Wide usage in Ubiquitous computing
Aim: Classify design purposes in shape changing interfaces
Reviewed CHI 2012 and CHI 2013 papers
CLASSIFICATION OF BENDING GESTURES
Warren et al.
Many independent degrees of freedom
Which ones to choose? How to classify?
Location, Direction, Size and angle
Kinetic parameters: Physical specification
of transformation
CLASSIFICATION OF BENDING GESTURES
Warren et al.
Findings?
Bending the device down is more difficult
Frequent functions mapped to top corner
Not easy to distinguish medium bends
Use two mode classification: Small and Large
Users have different ways of performing gestures
Adaptable classification system
SHape Memory alloys
Metals that change shape in response to heat
Light in weight and flexible
Can be used as creative crafting
materials by combining them with paper
SHAPE Memory Alloys
Folding flap
Parallelogram
SHAPE MEMORY ALLOYS
Curling flap
Clam shell
Shape Memory Alloys
Electronic Origami Crane
SHAPE MEMORY ALLOYS
Ten different forms of shape resolution defined:
area, granularity, porosity, amplitude, zero-crossing, closure, stretchability, strength,
speed
MORPHEES - NEXT gen mobile
Self-actuated flexible mobile device
Ability to transform itself to shapes
Examples: Mimic a console, Gun trigger
Limitations: Building high shape
resolution touch
MOREPHONE
Communicate notifications using Shape
deformations
Shape Memory alloys to achieve actuation
Map type of notification (1/2/3 corner bend)
to urgency
OPTICAL FIBER CLOTH
Hashimoto et al.
Light, another form of input.
Light cloth: A fabric made of optical fibers
A pen to control color of the cloth.
Not only furniture design, but also
contextual highlighting, invisible lasers
Missing aspect: No experimental observation
DEFORMABLE USER INTERFACES
Limited methods available for input/ output
interaction
Deformation based gesture recognition
Variable stiffness for haptic feedback
Mimic Tile
DEFORMABLE USER INTERFACES
Components:
SMA Wires
Silicon rubber sheet
Heat resistant pulleys
Polycarbonate plate
and acrylic plate
Usage? Drawbacks?
DYNAMIC PHYSICAL AFFORDANCES
inFORM System
Youtube video
Earlier work
DYNAMIC Physical affordances
Three basic functionalities:
Provide dynamic physical affordance
Restrict through dynamic constraints
Manipulate passive objects
DYNAMIC Physical affordances
Usage of inFORM system:
Contour mapping
Computer Aided design
3D graphs
For visually impaired
Limitations:
Cost
Space
Pin sizes
Overlapping
CONCLUSION
Papers analyzed using Rasmussen et al.'s classification
Drew comparison between different papers.
Purposes addressed by each shape changing interface
No systematic approach so far
Key objective for future research:
Generate more data on user experience with shape
changing interfaces
THANK YOU
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