Three-dimensional alpha shapes
ACM Transactions on Graphics (TOG)
Passive real-world interface props for neurosurgical visualization
CHI '94 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
3D palette: a virtual reality content creation tool
VRST '97 Proceedings of the ACM symposium on Virtual reality software and technology
Surface reconstruction with anisotropic density-scaled alpha shapes
Proceedings of the conference on Visualization '98
Using transparent props for interaction with the virtual table
I3D '99 Proceedings of the 1999 symposium on Interactive 3D graphics
Towards usable VR: an empirical study of user interfaces for immersive virtual environments
Proceedings of the SIGCHI conference on Human Factors in Computing Systems
Exploring geo-scientific data in virtual environments
VIS '99 Proceedings of the conference on Visualization '99: celebrating ten years
Surface drawing: creating organic 3D shapes with the hand and tangible tools
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Towards intuitive exploration tools for data visualization in VR
VRST '02 Proceedings of the ACM symposium on Virtual reality software and technology
3-Draw: A Tool for Designing 3D Shapes
IEEE Computer Graphics and Applications
Designing Animal Habitats Within an Immersive VE
IEEE Computer Graphics and Applications
Virtual Notepad: Handwriting in Immersive VR
VRAIS '98 Proceedings of the Virtual Reality Annual International Symposium
The 3D Tractus: A Three-Dimensional Drawing Board
TABLETOP '06 Proceedings of the First IEEE International Workshop on Horizontal Interactive Human-Computer Systems
SKETCH: an interface for sketching 3D scenes
ACM SIGGRAPH 2006 Courses
Teddy: a sketching interface for 3D freeform design
ACM SIGGRAPH 2006 Courses
A Flexible Multi-Volume Shader Framework for Arbitrarily Intersecting Multi-Resolution Datasets
IEEE Transactions on Visualization and Computer Graphics
ILoveSketch: as-natural-as-possible sketching system for creating 3d curve models
Proceedings of the 21st annual ACM symposium on User interface software and technology
Evaluation of remote collaborative manipulation for scientific data analysis
Proceedings of the 18th ACM symposium on Virtual reality software and technology
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In the oil and gas application domain, there is a need for 3D volume annotations to sketch out uncertainty regions in seismic data sets. Together with geo-science experts, we identified actual requirements for efficient annotations of volumetric areas. As a result, we introduce the 3D Sketch Slice, a novel system for volumetric annotations. Based on a 3D-tracked pen tablet, the 3D Sketch Slice works as a prop for a subsurface volume slice. Using pen input, a user can precisely sketch 3D points on a 2D volume slice while directly controlling the 3D position and orientation of that slice within a seismic volume. The points selected define 3D sketches through 3D alpha shape representations. Furthermore, we define clutching and mapping functions and we present a novel visual feedback method for multi-user annotations. Finally, we performed an informal evaluation with expert users. Despite some ergonomic concerns, they confirmed an increase in perceived precision. In general, the requirements identified had been met and it was proposed to apply the 3D Sketch Slice methodology to other scenarios.