Popup vernier: a tool for sub-pixel-pitch dragging with smooth mode transition
Proceedings of the 11th annual ACM symposium on User interface software and technology
The humane interface: new directions for designing interactive systems
The humane interface: new directions for designing interactive systems
Video browsing by direct manipulation
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
DRAGON: a direct manipulation interface for frame-accurate in-scene video navigation
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Interface designs for pen-based mobile video browsing
Proceedings of the 7th ACM conference on Designing interactive systems
Video object annotation, navigation, and composition
Proceedings of the 21st annual ACM symposium on User interface software and technology
Direct space-time trajectory control for visual media editing
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Direct manipulation video navigation in 3D
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
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Direct manipulation video navigation (DMVN) systems allow to navigate inside video scenes by spatially manipulating objects in the video. Problems arise when dealing with temporal ambiguities where a time span is projected onto a single point in image space, e.g., when objects stop moving. Existing DMVN systems deal with these cases by either disabling navigation on the paused object or by allowing jumps in the timeline. Both of these workarounds are undesirable as they introduce inconsistency or provoke loss of context. We analyze current practices regarding temporal ambiguities and introduce two new methods to visualize and navigate object pauses. User tests show that the new approaches are better suited for navigation in scenes containing temporal ambiguities and are rated higher in terms of user satisfaction.