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In the academic paper titled "Visualization of Vessel Movements", PhD student Niels Willems proposes a new geographical visualization technique to support operators of coastal surveillance systems to get insights in vessel movements. The visualization is based on the calculation of a density field that is derived from convolution of the dynamic vessel positions, which is then shown as an illuminated height map.

The combination of two fields (i.e. a large and small kernel), provides overview and detail: a large kernel provides an overview of area usage revealing vessel highways. Details of speed variations of individual vessels are shown with a small kernel, highlighting anchoring zones where multiple vessels stop.

The base visualization shows shipping movement during smooth weather around the entrance of Rotterdam harbor. Three north-south sea lanes appear, while several anchor zones pop up by the highlighted dots of the individual trajectories. Furthermore, some maintenance vessels move slowly in a small area, typically around an oil platform or a wind mill park, which can be observed by the intense individual trajectories.

See also Humpback Whale Behavior and Revealing Suspicious Ship Sinkings.

Via New Scientist.




And once again, behind a great paper a great researcher, Jarke J. van Wijk, just like in your previous post: http://infosthetics.com/archives/2010/06/what_is_the_best_arrow_representation_in_visualizations.html#comments


Fri 02 Jul 2010 at 2:41 AM
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