Date post: | 18-Jan-2018 |
Category: |
Documents |
Upload: | neal-jefferson |
View: | 214 times |
Download: | 0 times |
Transitioning from Implicit to Explicit, Public to Personal, Interaction with Multiple Users
Daniel Vogel, Ravin Balakrishnan Department of Computer Science
University of Toronto
Interactive Public Ambient Displays:
Why do we need a interactive public display?
• Information exchanging
• A dream of ubiquitous computing– A gateway to access our personal information
How? Challenges
• Public: attention– Not overloading users’ senses – Minimally intrusive
• Personal: privacy
• Sharing interaction
Bringing people from public to personal
Streitz, et al., 2003
Vogel, et al., 2004
Design Principles and Interaction Framework
• Goal: seamlessly, fluidly• implicit explicit• Public personal • Solve the dilemma of dual role• Solution: user’s attention (location and
orientation) to the display and relationship between available information type and user’s phase
Hardware and layout
From top to bottom: weather, office activity, calendar, and messaging
50” plasma screen with toch-sensitive overlay
Vicon for tracking
Ambient Display Phase
• able to get a sense of the overall information space with a quick glance
• Calm aesthetics, shared use, comprehension and Immediate Usability
• Tech: text labels
Implicit Interaction Phase
• Calm aesthetics and notification• Tech: vertical bar– :appearance (location)– width (body orientation)– opacity (head orientation)
Notification Flag
Subtle Interaction Phase I(Overview)
• Distance < 40”• Why• Shared use and Immediate Usability
Subtle Interaction Phase II(Select)
Personal Interaction Phase
Transition
Informal User Study• four participants• work in an office environment, and were fluent with various
computational media• Our evaluation had two parts. • First
– Method: talk-aloud– how they explore their movements influenced the display and their
interpretation– glove with markers for hand tracking was not used in the first part of
the evaluation• Second
– the gestures performance, gesture hint icons effectiveness, timeline navigation, and the phase of touch-screen initiation
– did not implement help sequences
Summary• Fluid movement between phases• Techniques for multiple users• Subtle notification• Privacy controls• Self-revealing help• Implicit interaction was enabled by sensing
contextual cues such as body orientation and position, and user proximity to the display.
• Hand gestures and touch screen input support explicit interaction.
Conclusion• a new style of interactive public ambient display combining
peripheral notification with implicit and explicit interaction for accessing both public and personal information
• Initial user feedback indicates that our techniques are quickly discoverable and appear to be usable.
• A set of design principles and an interaction framework that fluidly moves from implicit interaction with a public ambient peripheral display to explicit interaction
• Taking us a step closer to realizing more sophisticated and useful sharable, interactive, public ambient displays.