Visual thinking colin_ware_lectures_2013_1_introduction
-
Upload
elsa-von-licy -
Category
Education
-
view
64 -
download
2
Transcript of Visual thinking colin_ware_lectures_2013_1_introduction
Visual Queries:The foundation of visual thinking
Colin WareData Visualization Research Lab
University of New Hampshire
Designing with cyborgs in mind
Central Problem: How do we perceivethe world in all its rich detail?
Only detail in fovea Only a small amount of Information in
visual working memory.
Solution “The world is its own memory” O’Regan Task-related active vision “What you see is what you need” Treish et al. (2003)
Seeing is a process that helps us solve problems
Stage 2 Pattern perception
Visual queries are executed by finding patterns in displays
Attentional DemandsTune the pattern finding processes
Top down meets bottom up
Why visualize?
Human Memory: 100 meg (Landauer)
= 108 (not unique) World information: 1 exabyte/year = 1018 (unique) = 108 bytes new information per person per year
Conclusion: we are cognitive cyborgs – our memories are not in our heads.
Why do we care about perception?
It is about what makes information display effective.
Can there be a science of visualization? Evaluation
Visualizations
Maps Route Flow Thematic (geology, vegetation, etc)
Multi-dimensional Discrete Multi-dimensional continuous Graphs
Social Networks Flow
Narrative – explaining data Animations, assembly diagrams
Other thinking tools Calendars, Planners, search engines, News pages, Design tools
Length - 420 ft 16,000 Tons Beam – 82 ft 30,000 HP Draft – 29 ft Diesel Elec AC/AC
Fuel – 1,165,000 gal Top Speed – 17kts Ice Breaking – 4.5 ft @ 3 kts
CAVE
Head tracking – stereo Resolution problems Light scattering problems Vergence focus problem for near object Occlusion problems for near objects
Capacity of visual working memory (Vogal, Woodman, Luck, 2001) Task – change detection Can see 3.3 objects Each object can be complex
1 second
Dual Processing
DisplayFeatures
Proto-objects andPatterns
VisualWorkingMemory
GIST
VisualQuery
VerbalWorkingMemory
Egocentric object andPattern map
OBJECTFILES“Nexus”
Dog