Ubiquitous computing, Lecture notes of Computer Science

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chapter 20

ubiquitous computing

and augmented

realities

ubiquitous computing and

augmented realities

• (^) ubiquitous computing
  • (^) filling the real world with computers
• (^) virtual and augmented reality
  • (^) making the real world in a computer!

Ubiquitous Computing

• (^) Any computing technology that permits

human interaction away from a single

workstation

• (^) Implications for
  • (^) Technology defining the interactive experience
  • (^) Applications or uses
  • (^) Underlying theories of interaction

Scales of devices

• (^) Weiser proposed
  • (^) Inch
  • (^) Foot
  • (^) Yard
• (^) Implications for device size as well as

relationship to people

Device scales

• (^) Foot
  • (^) notebooks
  • (^) tablets
  • (^) digital paper
• (^) Individual owns

several but not

assumed to be

always with them.

Device scales

• (^) Yard
  • (^) electronic whiteboards
  • (^) plasma displays
  • (^) smart bulletin boards
• (^) Buildings or

institutions own them

and lots of people

share them.

Different Inputs

Capacitive sensing on a table Sensors on a PDA

Multi-scale and distributed

output

• (^) Screens of many sizes
  • (^) (very) small
  • (^) (very) large
• (^) Distributed in space, but coordinated

Merging Physical and Digital

Worlds

• (^) How can we remove

the barrier?

• (^) Actions on physical objects have meaning electronically, and vice versa
• (^) Output from electronic world superimposed on physical world A “digital” desk An augmented calendar

Application Themes

• (^) Context-aware computing
  • (^) Sensed phenomena facilitate easier interaction
• (^) Automated capture and access
  • (^) Live experiences stored for future access
• (^) Toward continuous interaction
  • (^) Everyday activities have no clear begin-end conditions

Evaluation Challenges

• (^) How can we adapt other HCI techiques

to apply to ubicomp settings?

• (^) Ubicomp activities not so task-centric
• (^) Technologies are so new, it is often hard to get long-term authentic summative evaluation
• (^) Metric of success could be very different (playfulness, non-distraction versus efficiency)

ambient wood

• (^) real wood! … filled with electronics
• (^) light and moisture meters
  • (^) recorded with GPRS location
  • (^) drawn on map later
• (^) ‘periscope’
  • (^) shows invisible things
  • (^) uses RFID
• (^) triggered sound

virtual and augmented reality

VR - technology & experience

web, desktop and simulators

AR – mixing virtual and real