Visualization of vessel movements
Article first published online: 27 JUL 2009
© 2009 The Author(s) Journal compilation © 2009 The Eurographics Association and Blackwell Publishing Ltd.
Computer Graphics Forum
Volume 28, Issue 3, pages 959–966, June 2009
How to Cite
Willems, N., Van De Wetering, H. and Van Wijk, J. J. (2009), Visualization of vessel movements. Computer Graphics Forum, 28: 959–966. doi: 10.1111/j.1467-8659.2009.01440.x
- Issue published online: 27 JUL 2009
- Article first published online: 27 JUL 2009
- Computer Graphics [I.3.3]: Line and Curve Generation
We propose a geographical visualization to support operators of coastal surveillance systems and decision making analysts to get insights in vessel movements. For a possibly unknown area, they want to know where significant maritime areas, like highways and anchoring zones, are located. We show these features as an overlay on a map. As source data we use AIS data: Many vessels are currently equipped with advanced GPS devices that frequently sample the state of the vessels and broadcast them. Our visualization is based on density fields that are derived from convolution of the dynamic vessel positions with a kernel. The density fields are shown as illuminated height maps. Combination of two fields, with 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. Besides for maritime applications we expect that this approach is useful for the visualization of moving object data in general.