Geometric approaches to nonplanar quadric surface intersection curves
ACM Transactions on Graphics (TOG)
Geometric method of intersecting natural quadrics represented in trimmed surface form
Computer-Aided Design
Automatic parsing of degenerate quadric-surface intersections
ACM Transactions on Graphics (TOG)
On the planar intersection of natural quadrics
SMA '91 Proceedings of the first ACM symposium on Solid modeling foundations and CAD/CAM applications
OBBTree: a hierarchical structure for rapid interference detection
SIGGRAPH '96 Proceedings of the 23rd annual conference on Computer graphics and interactive techniques
A Microsurgery Simulation System
MICCAI '01 Proceedings of the 4th International Conference on Medical Image Computing and Computer-Assisted Intervention
MOSAIC Model for Sensorimotor Learning and Control
Neural Computation
Arm trajectory modifications during reaching towards visual targets
Journal of Cognitive Neuroscience
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We are developing a Virtual Reality based training system for micromanipulation in collaboration with the National University Hospital in Singapore. While conventional approaches judge a virtual environment by its resemblance to the real environment, we use simple environments with only selected features of the real task, and develop fast algorithms to investigate the learning of dexterity primitives using various multisensory cues. For the needle maneuvering primitive, this paper introduces a method using stereographic projection to compute the distance between the curved needle and a curved tube, necessary to investigate multi-sensory cues systematically. This analytical algorithm is shown to be faster by orders of magnitude than numerical ones. The computation time barely increases with increasing precision, a critical condition to simulate the microworld.