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The force-update-rate requirements of transparent rendering of virtual environments are in conflict with the computational cost required for computing complex interactions between deforming objects. In this paper we introduce a novel method for satisfying high force update rates with deformable objects, yet retaining the visual quality of complex deformations and interactions. The objects that are...
As an approach to real-time simulation of haptic interaction with deformable objects, we proposed a record-reproduction method called dasiaimpulse response deformation modelpsila (IRDM), in which the deformation of an object shape is computed by convolving temporal sequence of interaction force with a pre-computed response of model to impulse force. Although, IRDM has an advantage that its computation...
Soft tissue modelling is important in the realm of haptic interactions. The main challenge in this research area is to combine two basic conditions which are essential-the stability of the haptic interaction running on high refresh rate on one hand and realistic behavior of the tissue assuming computationally expensive mathematical models on the other.
In this demonstration, we show haptic results from our research on distributed contact between deformable objects with complex geometry. The demos run at 1000 Hz, and support 6-DoF haptic rendering. Real-time evaluation of distributed contact forces between rigid or deformable 3D objects is a key ingredient of 6-DoF force-feedback rendering. We demonstrate a spatially and temporally adaptive approach...
In the current world, by and large, computer interaction relies on visual and auditory feedback and to make interactions more realistic, tactile response would be essential e.g. for medical training simulations. Haptic interfaces would make the digital models to be probed and felt by the users and more specifically in a medical world by medical students, these simulations, also can reduce costs and...
Simplified soft tissue models used in surgical simulations cannot perfectly reproduce all material behaviors. In particular, many tissues exhibit the Poynting effect, which results in normal forces during shearing of tissue and is only observed in nonlinear elastic material models. In order to investigate and quantify the role of the Poynting effect on material discrimination, we performed a multi-dimensional...
In this work we present PhyNeSS - a novel physics-driven neural networks-based surgical simulation system which, for the first time, combines the complexity and accuracy of physics-based non-linear soft tissue models and commercial finite element codes with the high speed of execution of machine learned neural networks. While soft tissue is inherently nonlinear, physics-based simulation of nonlinear...
Different aspects of bone surgery simulation has been a popular topic in haptics research field. This demonstration paper has two major results: a free and open source software (FOSS) implementation of a well known algorithm for tool-bone interaction force estimation, and an evaluation conducted as part of a suggested User-centered design approach for creation of a surgery simulator targeting Oral...
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