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VISUALIZATION
2003
IEEE

A Constraint-Based Technique for Haptic Volume Exploration

9 years 6 months ago
A Constraint-Based Technique for Haptic Volume Exploration
We present a haptic rendering technique that uses directional constraints to facilitate enhanced exploration modes for volumetric datasets. The algorithm restricts user motion in certain directions by incrementally moving a proxy point along the axes of a local reference frame. Reaction forces are generated by a spring coupler between the proxy and the data probe, which can be tuned to the capabilities of the haptic interface. Secondary haptic effects including field forces, friction, and texture can be easily incorporated to convey information about additional characteristics of the data. We illustrate the technique with two examples: displaying fiber orientation in heart muscle layers and exploring diffusion tensor fiber tracts in brain white matter tissue. Initial evaluation of the approach indicates that haptic constraints provide an intuitive means for displaying directional information in volume data. CR Categories: I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Re...
Milan Ikits, J. Dean Brederson, Charles D. Hansen,
Added 05 Jul 2010
Updated 05 Jul 2010
Type Conference
Year 2003
Where VISUALIZATION
Authors Milan Ikits, J. Dean Brederson, Charles D. Hansen, Christopher R. Johnson
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