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Dokumenttyp
- Bericht (2) (entfernen)
Schlagworte
- Association for Computing Machinery / Special Interest Group on Graphics (2)
- Augmented Reality (2)
- CGI <Computergraphik> (2)
- Erweiterte Realität (2)
- Maschinelles Sehen (2)
- Projection (2)
- Projektion (2)
- Architektur <Informatik> (1)
- Camera Tracking (1)
- Distributed Systems (1)
- Interaction (1)
- Interaktion (1)
- Kamera Tracking (1)
- Laser Pointer Tracking (1)
- Laserpointer Tracking (1)
- Verteilte Systeme (1)
Erscheinungsjahr
- 2007 (2) (entfernen)
We present a system that applies a custom-built pan-tilt-zoom camera for laser-pointer tracking in arbitrary real environments. Once placed in a building environment, it carries out a fully automatic self-registration, registrations of projectors, and sampling of surface parameters, such as geometry and reflectivity. After these steps, it can be used for tracking a laser spot on the surface as well as an LED marker in 3D space, using inter-playing fisheye context and controllable detail cameras. The captured surface information can be used for masking out areas that are critical to laser-pointer tracking, and for guiding geometric and radiometric image correction techniques that enable a projector-based augmentation on arbitrary surfaces. We describe a distributed software framework that couples laser-pointer tracking for interaction, projector-based AR as well as video see-through AR for visualizations with the domain specific functionality of existing desktop tools for architectural planning, simulation and building surveying.
In this paper we present a novel adaptive imperceptible pattern projection technique that considers parameters of human visual perception. A coded image that is invisible for human observers is temporally integrated into the projected image, but can be reconstructed by a synchronized camera. The embedded code is dynamically adjusted on the fly to guarantee its non-perceivability and to adapt it to the current camera pose. Linked with real-time flash keying, for instance, this enables in-shot optical tracking using a dynamic multi-resolution marker technique. A sample prototype is realized that demonstrates the application of our method in the context of augmentations in television studios.