1. Content-Based Interactivity Visualization tools results of a query whole visual information space multi-dimensional space selected features image clustering Figure 1.6 the query point

2. Content-Based Interactivity

3. thumbnail images (usually 100 x 100 pixels) video summarization synchronization of video, audio and caption shots, key-frames and mosaics Figure 1.7 music summarization themes music visualization

6. Content-Based Interactivity Querying tools query types exact queries range queries k-nearest neighbor queries query by painting/sketch/image example video retrieval via key-frame matching

7. Content-Based Interactivity iconic querying spatial/temporal relationships of objects the 13 relations 2D-string metrical specifications distance, velocity, acceleration the Vega system demo 3D-list motion tracks