Hierarchical spatial hashing-based collision detection and hybrid collision response in a haptic surgery simulator.

Multipoint Collision Detection Algorithm for Bone Milling and Drilling in a Haptic VR Surgery Simulator

Virtual Bone Surgery Using a Haptic Robot

Article history: Received: August 15, 2009. Received in revised form: November 24, 2009. Accepted: November 29, 2009. This paper describes a virtual reality (VR)-assisted robotic surgery simulator for bone surgery training. A trainee surgeon holds the haptic robot stylus and manipulates it three-dimensionally to interact with the virtual bone. The robotic simulator allows the trainee surgeon to...

Informatica Detailed crowd simulation and spatial hashing for large - scale collision detection

Large crowds consist of many individuals who might each react differently to a given situation. We describe a crowd simulator which models a building evacuation scenario and incorporates several new types of behavior. Using these new types of behavior, we give the simulation a more lifelike impression. In addition to this, we also present a comprehensive summary of collision detection performan...

Realistic haptic volume interaction for petrous bone surgery simulation

In this paper, a new approach for haptic volume interaction with high resolution voxelbased anatomic models is presented. The haptic rendering is based on a multi-point collision detection approach which provides realistic tool interaction with the models. Both haptics and graphics are rendered at sub-voxel resolution, which leads to a high level of detail and enables the exploration of the mod...

Haptic Milling Simulation in Six Degrees-of-Freedom With Application to Surgery in Stiff Tissue

The research presented in this thesis describes a substantial part of the design of a prototypical surgical training simulator. The results are intended to be applied in future simulators used to educate and train surgeons for bone milling operations. In earlier work we have developed a haptic bone milling surgery simulator prototype based on three degrees-of-freedom force feedback. The contrib...