Exploring the past

摘要

In this paper, we present a set of tools and techniques for visualization of and interaction with historical data. First, we briefly describe the data acquisition and preparation. Afterwards, we discuss in detail the interaction approaches for exploration of historical data, containing a time dimension. In particular, we propose (1) a continuous time increment approach for visualizing 3D slices continuously moving in the 4D space; (2) a fly-with mode for viewing the scene from the perspective of the participants in the migration, we are visualizing; (3) a time lens, as an extension of the traditional magic lens for viewing arbitrary event times; (4) a time-space exploration tool for simultaneous viewing more than one event time and location of interest; (5) a guided exploration tool, which allows for viewing events on an interactively defined or pre-defined path in space. Finally, we conclude the paper with a discussion and comparison of the proposed tools.