The Lifecycle of Geotagged Multimedia Data

Abstract

The world is a big place. At any given instant something is happening somewhere, but even when nothing is going on people still find ways to generate multimedia data, ranging from social media posts, to photos and videos. A substantial number of these media objects is associated with a location, and in an increasingly mobile and connected world (both in terms of people and devices), this number is only bound to get larger. Yet, in the multimedia literature we observe that many researchers often unwittingly treat the geospatial dimension as if it were a regular feature dimension, despite it requiring special attention. In order to avoid pitfalls and to steer clear of erroneous conclusions, this tutorial aims to teach researchers and students how geotagged multimedia data differs from regular data and to educate them on best practices when dealing with such data. We will cover the lifecycle of geotagged data in multimedia research, where the topics range from how this kind of data is represented, processed, analyzed, and visualized. The tutorial requires both passive and active involvement, where we not only present the material, but the attendees also get the opportunity to interact with it using a variety of open source data and tools that we have prepared using a virtual machine.