Real-Time Incision Simulation Using Discontinuous Free Form Deformation

Sela, Guy; Schein, Sagi; Elber, Gershon

doi:10.1007/978-3-540-25968-8_13

Cited by 9 publications

(6 citation statements)

References 10 publications

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“…Another surgery simulation system was presented in [14], in which triangle meshes that intersect with a virtual scalpel are split and retessellated and a triangulation of the cutting plane is added to represent the exposed tissue. Subsequently, free-form deformations are applied to the sub-meshes on either side of the incision to simulate tissue behavior.…”

Section: Related Workmentioning

confidence: 99%

Interactive Retro-Deformation of Terrain for Reconstructing 3D Fault Displacements

Westerteiger

Compton

Bernadin

et al. 2012

IEEE Trans. Visual. Comput. Graphics

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Abstract-Planetary topography is the result of complex interactions between geological processes, of which faulting is a prominent component. Surface-rupturing earthquakes cut and move landforms which develop across active faults, producing characteristic surface displacements across the fault. Geometric models of faults and their associated surface displacements are commonly applied to reconstruct these offsets to enable interpretation of the observed topography. However, current 2D techniques are limited in their capability to convey both the three-dimensional kinematics of faulting and the incremental sequence of events required by a given reconstruction. Here we present a real-time system for interactive retro-deformation of faulted topography to enable reconstruction of fault displacement within a high-resolution (sub 1m/pixel) 3D terrain visualization. We employ geometry shaders on the GPU to intersect the surface mesh with fault-segments interactively specified by the user and transform the resulting surface blocks in realtime according to a kinematic model of fault motion. Our method facilitates a human-in-the-loop approach to reconstruction of fault displacements by providing instant visual feedback while exploring the parameter space. Thus, scientists can evaluate the validity of traditional point-to-point reconstructions by visually examining a smooth interpolation of the displacement in 3D. We show the efficacy of our approach by using it to reconstruct segments of the San Andreas fault, California as well as a graben structure in the Noctis Labyrinthus region on Mars.

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Section: Related Workmentioning

confidence: 99%

Interactive Retro-Deformation of Terrain for Reconstructing 3D Fault Displacements

Westerteiger

Compton

Bernadin

et al. 2012

IEEE Trans. Visual. Comput. Graphics

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“…This type of method is very fast but do not use physical properties. Those methods are not realistic enough, that is why they are often used in combination with other methods [2,3] or used for specific topologies [4,5]. For applications which demand realistic simulation of deformable physical bodies, physical modeling is more convenient.…”

Section: Introductionmentioning

confidence: 99%

Tool/tissues interaction modeling for transluminal angioplasty simulation

Fol

Haigron

Lucas

2007

2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society

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In this paper, a simulation environment is described for balloon dilation during percutaneous transluminal angioplasty. It means simulating tool/tissues interactions involved in the inflation of a balloon by considering patient specific data. In this context, three main behaviors have been identified: soft tissues, crush completely under the effect of the balloon, calcified plaques, do not admit any deformation but could move in deformable structures and blood vessel wall and organs, try to find their original forms. A deformable soft tissue model is proposed, based on the Enhanced ChainMail method to take into account tissues deformation during dilatation. We improved the original ChainMail method with a "forbidden zone" step to facilitate tool/tissues interactions. The simulation was implemented using five key steps: 1) initialization of balloon parameters; 2) definition of the data structure; 3) dilatation of the balloon and displacement approximation; 4) final position estimation by an elastic relaxation; and 5) interpolation step for visualization. Preliminary results obtained from patient CT data are reported.

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“…Furthermore, real-time response, interactivity and accuracy are crucial components in any such simulation system. A major effort has been invested in recent years to find ways to improve the performance, accuracy and realism of existing systems.In this paper, we extend the work of [Sela et al 2004], in which we used Discontinuous Free Form Deformations (DFFD) to artificially simulate real-time surgical operations. The presented scheme now uses accurate data from a Finite-Element Model (FEM), which simulates the motion response of the tissue around the scalpel, during incision.…”

mentioning

confidence: 99%

“…In this paper, we extend the work of [Sela et al 2004], in which we used Discontinuous Free Form Deformations (DFFD) to artificially simulate real-time surgical operations. The presented scheme now uses accurate data from a Finite-Element Model (FEM), which simulates the motion response of the tissue around the scalpel, during incision.…”

mentioning

confidence: 99%

Real-time haptic incision simulation using FEM-based discontinuous free form deformation

Sela

Subag

Alex

et al. 2006

Proceedings of the 2006 ACM Symposium on Solid and Physical Modeling

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Computer-aided surgical simulation is a topic of increasingly extensive research. Computer graphics, geometric modeling and finiteelement analysis all play major roles in these simulations. Furthermore, real-time response, interactivity and accuracy are crucial components in any such simulation system. A major effort has been invested in recent years to find ways to improve the performance, accuracy and realism of existing systems.In this paper, we extend the work of [Sela et al. 2004], in which we used Discontinuous Free Form Deformations (DFFD) to artificially simulate real-time surgical operations. The presented scheme now uses accurate data from a Finite-Element Model (FEM), which simulates the motion response of the tissue around the scalpel, during incision. The data is then encoded once into the DFFD, representing the simulation over time. In real-time, The DFFD is applied to the vertices of the surface mesh at the actual incision location and time. The presented scheme encapsulates and takes advantage of both the speed of the DFFD application, and the accuracy of a FEM. In addition, the presented system uses a haptic force feedback device in order to improve realism and ease of use.

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Real-Time Incision Simulation Using Discontinuous Free Form Deformation

Cited by 9 publications

References 10 publications

Interactive Retro-Deformation of Terrain for Reconstructing 3D Fault Displacements

Interactive Retro-Deformation of Terrain for Reconstructing 3D Fault Displacements

Tool/tissues interaction modeling for transluminal angioplasty simulation

Real-time haptic incision simulation using FEM-based discontinuous free form deformation

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