The traditional content-based retrieval approaches usually use flat querying, where whole multimedia database is searched for a result of some similarity query with a user specified query object. How- ever, there are retrieval scenarios (e.g., multimedia exploration), where users may not have a clear search intents in their minds, they just want to inspect a content of the multimedia collection. In such scenarios, flat querying is not suitable for the first phases of browsing, because it retrieves the most similar objects and does not consider a view on part of a multimedia space from different perspectives. Therefore, we defined a new Multilayer Exploration Structure (MLES), that enables exploration of a multimedia collection in different levels of details. Using the MLES, we formally defined popular exploration operations (zoom-in/out, pan) to enable horizontal and vertical browsing in explored space and we dis- cussed several problems related to the area of multimedia exploration.
['Juraj Moško', 'Jakub Lokoč', 'Tomáš Grošup', 'Přemysl Čech', 'Tomáš Skopal', 'Jan Lánský']
MLES: Multilayer Exploration Structure for Multimedia Exploration