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Performance evaluation is indispensable for a surgical simulator to become acceptable. A haptics-based dental simulator (iDental) has been developed and preliminary user evaluation on its first-generation prototype has been carried out to gain the knowledge. Based on detailed requirement analysis of Periodontics procedures, a combined evaluation method including qualitative and quantitative analysis...
We present a physics-based training simulator for bone machining. Based on experimental studies, the energy required to remove a unit volume of bone is a constant for every particular bone material. We use this physical principle to obtain the forces required to remove bone material with a milling tool rotating at high speed. The rotating blades of the tool are modeled as a set of small cutting elements...
For bone surgery haptic simulation, we need to consider both volume cutting deformation and stable force feedback. In this paper, we propose a volume-based haptic model where both bone and a tool are represented by voxel-based models so that we can handle shape deformation of bone efficiently. For fast and stable haptic rendering, we propose that the tool is represented by a signed-distance field...
Haptic rendering of complex scenes is becoming more and more important with the development of the virtual reality in surgical simulation. This paper studies the haptic rendering of the boundaries between tissues with different physical properties which is one of the common problems in complex scene simulation. Three indexes, boundary perceptibility, boundary force stability and plane height stability,...
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