41.4: Meta-Information Visualization in Geographic Information Display Systems

2005 ◽  
Vol 36 (1) ◽  
pp. 1406 ◽  
Author(s):  
Jonathan Pfautz ◽  
Adam Fouse ◽  
Kurt Shuster ◽  
Ann Bisantz ◽  
Emilie Roth
Keyword(s):  
Information Visualization ◽  
Geographic Information ◽  
Information Display ◽  
Meta Information ◽  
Display Systems

Simulated Navigation Performance with Marine Electronic Chart and Information Display Systems (ECDIS)

2004 ◽  
Vol 57 (2) ◽  
pp. 189-202 ◽  
Author(s):  
Don C. Donderi ◽  
Robert Mercer ◽  
M. Blair Hong ◽  
Douglas Skinner
Keyword(s):  
Nova Scotia ◽  
Information Display ◽  
Paper Chart ◽  
Low Visibility ◽  
Electronic Chart ◽  
Display Systems ◽  
Better Than

Licensed mariners carried out two simulated navigation studies testing electronic chart and information display systems (ECDIS) against paper chart navigation. In the first study, six mariners each completed approaches to Halifax, Nova Scotia, harbour with good and bad visibility and a range of wind and currents. Conditions included chart with radar, ECDIS with radar overlay and ECDIS with separate radar. ECDIS produced better performance and a smaller workload than paper charts and the radar overlay was slightly better than the separate radar display. In the second study, six new mariners completed exercises with low visibility and heavy or light radar traffic using ECDIS with radar overlay, ECDIS without overlay and ECDIS with optional overlay. Mariners preferred the optional overlay but all three conditions produced about equal performance. Based on mariners' performance and expressed preference, we recommend that ECDIS systems provide optional radar overlays.

Multilevel Adaptation in Human Engineering of Information Display Systems

1978 ◽  
Vol 22 (1) ◽  
pp. 303-303
Author(s):  
B.F. Lomov ◽  
V.F. Venda ◽  
Yu. M. Zabrodin
Keyword(s):  
Psychological Factors ◽  
Individual Characteristics ◽  
Human Engineering ◽  
Mathematical Methods ◽  
Information Display ◽  
Information Displays ◽  
Methods Of Evaluation ◽  
Statistical Relationships ◽  
Engineering Projects ◽  
Display Systems

Only two levels of adaptation are used in the most present human engineering projects of information display systems—total and contingent. At the same time experimental and theoretical analysis of the statistical relationships between structures of information display and values of psychological factors of complexity of operators' problem solving shows that three additional levels of adaptation are necessary. There are group, individual and individually—operative levels. Some mathematical methods of evaluation of optimal distribution of information displays between individuals operators, combinations of man with different individual characteristics in one operators group are worked out.

A Framework for Augmenting the Visualization of Dynamic Raster Surfaces

2003 ◽  
Vol 2 (2) ◽  
pp. 126-139 ◽  
Author(s):  
Sanjay Rana ◽  
Jason Dykes
Keyword(s):  
Computer Science ◽  
Information Visualization ◽  
Spatial Data ◽  
Software Tool ◽  
Geographic Information ◽  
Interactive Software ◽  
Specific Context ◽  
Data Set ◽  
Morphometric Features ◽  
Temporal Interpolation

Animated sequences of raster images that represent continuously varying surfaces, such as a temporal series of an evolving landform or an attribute series of socio-economic variation, are often used in an attempt to gain insight from ordered sequences of raster spatial data. Despite their aesthetic appeal and condensed nature, such representations are limited in terms of their suitability for prompting ideas and offering insight due to their poor information delivery and the lack of the levels of interactivity that are required to support visualization. Cartographic techniques aim to assist users of geographic information through processes of abstraction, by selecting, simplifying, smoothing and exaggerating when representing an underlying spatial data set graphically. Here we suggest a number of transformations and abstractions that take advantage of these techniques in a specific context–that of addressing the limitations associated with using animated raster surfaces for visualization, and propose them in the context of a framework that can be used to inform practice. The five techniques proposed are spatial and attribute smoothing, temporal interpolation, transformation of the surfaces into a network of morphometric features, the use of a graphic lag or fading and the employment of techniques for conditional interactivity that are appropriate for visualization. These efforts allow us to generate graphical environments that support visualization when using animated sequences of images representing continuous surfaces and are analogous to traditional cartographic techniques, namely, smoothing and exaggeration, simplification, enhancement and the various issues of design. By developing a framework for considering cartography in support of visualization from this particular type of data and phenomenon we aim to highlight the utility of a generically cartographic approach to information visualization. A number of particular techniques originating from computer science and conventional cartography are used in an application of the framework. A suitably interactive software tool is offered for evaluation–to establish the results of applying the framework and demonstrate ways in which we may augment the visualization of dynamic raster surfaces through animation and more generally aim to offer opportunity for insight through cartographic design.

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