Home // International Journal On Advances in Intelligent Systems, volume 8, numbers 1 and 2, 2015 // View article
Authors:
Stefan Peters
Liqiu Meng
Keywords: spatio temporal density map, rainbow color scheme, visual analytics, dynamic phenomena
Abstract:
The visualization of density information and its changes is a crucial support for the spatio-temporal analysis of dynamic phenomena. Existing density map approaches mainly apply to datasets with two different moments of time and thus do not provide adequate solutions for density mapping of dynamic points belonging to the same moving phenomena. The proposed approach termed as Spatio-Temporal Density Mapping intends to fill this research gap by incorporating and visualizing the temporal change of a point cluster in a 2D density map. At first either straight or curved movement trajectories based on centroids of spatio-temporal point clusters are detected. The traditional Kernel density contour surface is then divided into temporal segments, which are visually distinguished from one another by means of a rainbow color scheme. Furthermore, several ideas for the investigation of the usability of our approach are addressed.
Pages: 27 to 39
Copyright: Copyright (c) to authors, 2015. Used with permission.
Publication date: June 30, 2015
Published in: journal
ISSN: 1942-2679