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Spatio-Temporal Visualization of Battlefield Entities and Events

Spatio-Temporal Visualization of Battlefield Entities and Events. Fong Qiyue, Ng Foo Meng, Huang Zhiyong National University of Singapore DSO National Labs. Goals. Extract patterns inherent in large datasets and manifest them in visual forms

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Spatio-Temporal Visualization of Battlefield Entities and Events

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  1. Spatio-Temporal Visualization ofBattlefield Entities and Events Fong Qiyue, Ng Foo Meng, Huang Zhiyong National University of Singapore DSO National Labs

  2. Goals • Extract patterns inherent in large datasets and manifest them in visual forms • Explore various existing work to improve or modify them to adapt to requirements of the military application CGI 2006

  3. Our work • 1 novelTime Query GUI (Clock Face UI) • 7Spatio-Temporal VisualizationPrototypes in one software • Determined usability of Clock Face UI • Determined user preference for the 7 prototypes in terms of informative-ness and usefulness CGI 2006

  4. Clock face GUI Temporal Focusing • What It Is: Time query tool • Motivation: Deviate away from conventional timeline/time dials/calendar controls which have their limitation(s) • Design Goal: Find a visual metaphor closely related to time • Idea: Compact a calendar within a circular layout – to create a space-saving UI • Result: A Clock Face User Interface capable of forming time queries which satisfies Motivation and Design Goal Time of Day Selector (Temporal Brushing) Events Panel CGI 2006

  5. Trail graph Dot graph • Provides a snapshot of the distribution and strength of enemy units at a particular time moment • Provides a snapshot of how enemy units moved within a particular time interval CGI 2006

  6. Raster graph Spoke graph • Functions like Trail Graph • Spokes represent time at which a unit was spotted at location • Allows estimation of movingspeed • Allows differentiation of overlapping units • Rasters provide a snapshot of the state of the battlefield at a time moment • Allows in-depth comparison of states of battlefield (eg. how units moved / split) CGI 2006

  7. Grouped links graph Stacked bar graph • Events occurring at a location over a time interval are stacked (ie.ordered) in a bar • Allows making inferences: order, number of occurrence, recurrence and causalityrelationships of events • Links are drawn to locations where events occurred over a time interval • Links are grouped like “spider’s legs” • Conveys distributionof distinct event types across map very effectively CGI 2006

  8. Calendar graph Dynamic Calendar • Events occurring in a particular timeinterval are plotted directly onto the calendar • Calendar Graph provides a neatreport of what events occurred and when and where they occurred • Dynamic calendar mechanism is implemented to reduce space-wastage by calendar • Calendar is able to show temporal information very well CGI 2006

  9. Usability study Student T-Test for two independent samples was used CGI 2006

  10. Usability study • No difficulty experienced in using Clock Face GUI • Positive responses given to Clock Face GUI in terms of aesthetics, ease-of-use, intuitiveness, feedback and usefulness • Users found all 7 prototypes useful and informative but not necessarily intuitive or communicative at first sight • At 95% confidence, users preferred Trail Graph to Dot Graph; and Calendar Graph to Grouped Links Graph (in terms of informative-ness and usefulness) • Users remained “preference neutral” for the other prototypes CGI 2006

  11. Concluding remarks • The work • One novel time query GUI (Clock Face) and seven spatio-temporal data visualization prototypes • Remarks • GUI Design is challenging • Visualization can be a subjective issue since different people may interpret the same graphical object differently CGI 2006

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