Spatio-temporal LoD for browsing video databases

As the amount of data representing the real world increases, it is essential to manage it as collections of small components in spatial databases. The basic procedure of producing virtual spaces dynamically is realized by retrieving and visualizing dynamically spatial data stored in spatial databases using the rule of LoD (levels of detail). This paper discusses a principle of “time” extension to LoD. Data of camera movement was adopted as our experimental spatio-temporal data. Our prototype system “Time-Walk”, based on our proposed framework, is introduced with real examples