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This paper presents an efficient camera tracking using prior knowledge of a target scene - 3-D object models with scene textures. The camera tracking uses partially modeled 3-D objects instead of complete and delicate modeling, which is not easy in complex scenes with a variety of 3-D objects. For robust and accurate camera tracking, scene textures are also sparsely modeled, and they support reducing...
Visualization of engineering processes can be critical for validation and communication of simulation models to decision-makers. Augmented Reality (AR) visualization blends real-world information with graphical 3D models to create informative composite views that are difficult to replicate on the computer alone. This paper presents a robust and general-purpose mobile computing framework that allows...
Haptic interaction is commonly used with 3D objects defined by their geometric and solid models. Extension of the haptic interaction to 3D Cyber worlds is a challenging task due to the Internet bandwidth constraints and often prohibitive sizes of the models. We study how to replace visual and haptic rendering of shared 3D objects with 2D image visualization and 3D haptic rendering of the forces reconstructed...
The interaction between real and synthetic geometry is fundamental to Augmented Reality. Portraying such interactions in a manner that is convincing to the user requires 3D models of the shape of the real objects involved. The large-scale application of Augmented Reality technologies will thus require practical methods for generating 3D models of real objects. These methods will need to be fast, flexible,...
For molecular modeling, chemical structures have to be understood and imagined both in their three-dimensional spatial extent and in their dynamic behavior. We have developed an AR-based system for tangible interaction with molecules using optical markers. When users bring several molecules close to one another, potential bonds are shown and the molecules dynamically change their 3D structure according...
This paper presents a new technique to simultaneously model in both the physical and virtual worlds. The intended application domain for this technique is industrial design. A designer physically sculpts a 3D model from foam using a hand-held hot wire foam cutter. Both the foam and cutting tool are tracked, allowing the system to digitally replicate the sculpting process to produce a matching 3D virtual...
ProFORMA, an on-line reconstruction system for textured objects rotated by a user's hand, can be coupled with augmented reality (AR) to allow users to rapidly generate textured 3D models. We demonstrate how the use of an overlaid mesh model and 3D arrow can be used to assist the user in view planning, guiding the user to collect new keyframes from desirable views. The method described is particularly...
This paper presents a system that allows online building of 3D wireframe models through a combination of user interaction and automated methods from a handheld camera-mouse. Crucially, the model being built is used to concurrently compute camera pose, permitting extendable tracking while enabling the user to edit the model interactively. In contrast to other model building methods that are either...
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