A Bernstein‐Bézier Based Approach to Soft Tissue Simulation

Roth, Samuel Hans Martin; Groß, Markus; Turello, Silvio; Carls, Friedrich R.

doi:10.1111/1467-8659.00275

Cited by 42 publications

(28 citation statements)

References 16 publications

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“…Here, the calculation of complex physical behavior, attributes, and properties is based on the VH male data (Sachse et al, 1997) and can be used, for example, for simulation of electrical excitation propagation in the heart (Werner et al, 2000 [URL 95]). Other scientific projects use VHP data for finite element analysis methods for simulation of tissue behavior (Bernardi et al, 1998;Roth et al, 1998 …”

Section: Use Of the Vh Data In Clinical Proceduresmentioning

confidence: 99%

Teaching and learning gross anatomy using modern electronic media based on the visible human project

Jastrow

Vollrath

2002

Clinical Anatomy

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This article reviews online (Internet) anatomy projects and multimedia productions (books and CD-ROMs) based on the Visible Human Project (VHP) of the United States National Library of Medicine. The focus of these projects and productions is on the teaching of 3D anatomy using the digitized sections of the visible human male and female. The article also provides information about the VHP, its goals and what it has achieved thus far.

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Section: Use Of the Vh Data In Clinical Proceduresmentioning

confidence: 99%

Teaching and learning gross anatomy using modern electronic media based on the visible human project

Jastrow

Vollrath

2002

Clinical Anatomy

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“…Scalar fields are no longer just defined through values at nodes: more degrees of freedom per elements are now available, depending on the choice of basis functions and their polynomial orders. The accuracy gains brought by higher order basis in tetrahedral finite-element simulation were demonstrated in graphics by, e.g., [Roth et al 1998] and [Weber et al 2011]. However, the accuracy of finite element solutions is often strongly influenced by how well the geometry of the domain is approximated, which limits the applicability of straight-edge meshes in practice.…”

Section: Previous Workmentioning

confidence: 99%

“…While meshes made out of Bézier simplices (sometimes referred to as Bernstein-Bézier meshes) have often been used in the graphics literature (see, e.g., [Bargteil and Cohen 2014;DeRose 1988;Roth et al 1998;Weber et al 2011]), we briefly review their construction here for completeness.…”

Section: Primer On Bézier Meshesmentioning

confidence: 99%

Curved optimal delaunay triangulation

et al. 2018

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Meshes with curvilinear elements hold the appealing promise of enhanced geometric flexibility and higher-order numerical accuracy compared to their commonly-used straight-edge counterparts. However, the generation of curved meshes remains a computationally expensive endeavor with current meshing approaches: high-order parametric elements are notoriously difficult to conform to a given boundary geometry, and enforcing a smooth and non-degenerate Jacobian everywhere brings additional numerical difficulties to the meshing of complex domains. In this paper, we propose an extension of Optimal Delaunay Triangulations (ODT) to curved and graded isotropic meshes. By exploiting a continuum mechanics interpretation of ODT instead of the usual approximation theoretical foundations, we formulate a very robust geometry and topology optimization of Bézier meshes based on a new simple functional promoting isotropic and uniform Jacobians throughout the domain. We demonstrate that our resulting curved meshes can adapt to complex domains with high precision even for a small count of elements thanks to the added flexibility afforded by more control points and higher order basis functions.

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“…A number of authors have used finite element simulations in the context of facial surgery, e.g. [Pieper et al 1992;Koch et al 1996;Keeve et al 1996;Roth et al 1998] (see also, [Teschner et al 2000]). …”

Section: Related Workmentioning

confidence: 99%

Automatic determination of facial muscle activations from sparse motion capture marker data

Sifakis

Neverov

Fedkiw

2005

ACM SIGGRAPH 2005 Papers

161

174

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We built an anatomically accurate model of facial musculature, passive tissue and underlying skeletal structure using volumetric data acquired from a living male subject. The tissues are endowed with a highly nonlinear constitutive model including controllable anisotropic muscle activations based on fiber directions. Detailed models of this sort can be difficult to animate requiring complex coordinated stimulation of the underlying musculature. We propose a solution to this problem automatically determining muscle activations that track a sparse set of surface landmarks, e.g. acquired from motion capture marker data. Since the resulting animation is obtained via a three dimensional nonlinear finite element method, we obtain visually plausible and anatomically correct deformations with spatial and temporal coherence that provides robustness against outliers in the motion capture data. Moreover, the obtained muscle activations can be used in a robust simulation framework including contact and collision of the face with external objects.

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A Bernstein‐Bézier Based Approach to Soft Tissue Simulation

Abstract: This paper discusses a Finite Element approach for volumetric soft tissue modeling in the context

Cited by 42 publications

References 16 publications

Teaching and learning gross anatomy using modern electronic media based on the visible human project

Teaching and learning gross anatomy using modern electronic media based on the visible human project

Curved optimal delaunay triangulation

Automatic determination of facial muscle activations from sparse motion capture marker data

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