Related Experiment Videos
Six degree-of-freedom haptic rendering using spatialized normal cone search.
David E Johnson1, Peter Willemsen, Elaine Cohen
1School of Computing, 50 S. Central Campus Drive, MEB 3190, University of Utah, Salt Lake City, UT 84112, USA. dejohnso@cs.utah.edu
IEEE Transactions on Visualization and Computer Graphics
|November 8, 2005
Summary
This study presents a haptic rendering algorithm for complex 3D models, enabling realistic touch feedback in virtual environments. The system enhances virtual prototyping and accessibility applications by simulating forces and torques during interaction.
Area of Science:
- Computer Graphics
- Human-Computer Interaction
- Robotics
Background:
- Virtual environments and prototyping require realistic interaction.
- Existing haptic rendering methods face challenges with complex polygonal models.
Purpose of the Study:
- To develop a haptic rendering algorithm for arbitrary polygonal models.
- To enable realistic force and torque feedback for six degree-of-freedom haptic interfaces.
Main Methods:
- A collision system computes local distance extrema between a haptically controlled model and the scene.
- Haptic rendering calculates forces and torques based on these computed extrema.
- The algorithm is demonstrated on models with tens of thousands of triangles.
Main Results:
- The algorithm successfully renders haptic feedback for complex polygonal models.
- The system integrates seamlessly with virtual environments and prototyping tools.
- Demonstrated effectiveness in an accessibility application for pathfinding.
Conclusions:
- The developed haptic rendering algorithm provides a robust solution for arbitrary polygonal models.
- This technology enhances user experience in virtual prototyping and interactive applications.
- The approach has practical applications in accessibility, such as collision-free path planning.