2015 IEEE Pacific Visualization Symposium (PacificVis) (2015)
April 14, 2015 to April 17, 2015
Vidya Narayanan , Indian Institute of Science, Bangalore, India
Dilip Mathew Thomas , Indian Institute of Science, Bangalore, India
Vijay Natarajan , Indian Institute of Science, Bangalore, India
Scientific phenomena are often studied through collections of related scalar fields generated from different observations of the same phenomenon. Exploration of such data requires a robust distance measure to compare scalar fields for tasks such as identifying key events and establishing correspondence between features in the data. Towards this goal, we propose a topological data structure called the complete extremum graph and define a distance measure on it for comparing scalar fields in a feature-aware manner. We design an algorithm for computing the distance and show its applications in analysing time varying data.
Distortion, Manifolds, Image analysis, Distortion measurement, Data structures, Level set
V. Narayanan, D. M. Thomas and V. Natarajan, "Distance between extremum graphs," 2015 IEEE Pacific Visualization Symposium (PacificVis)(PACIFICVIS), Hangzhou, China, 2015, pp. 263-270.