Capture and Modeling of Non-Linear Heterogeneous Soft Tissue

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Capture and Modeling of Non-Linear Heterogeneous Soft Tissue

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Title: Capture and Modeling of Non-Linear Heterogeneous Soft Tissue
Author: Bickel, Bernd; Bächer, Moritz; Otaduy, Miguel A.; Matusik, Wojciech; Pfister, Hanspeter; Gross, Markus

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Citation: Bickel, Bernd, Moritz Bächer, Miguel A. Otaduy, Wojciech Matusik, Hanspeter Pfister, and Markus Gross. 2009. Capture and modeling of non-linear heterogeneous soft tissue. In ACM SIGGRAPH 2009 Papers: August 3-7, 2009, New Orleans, Louisiana, ed. H. Hoppe, article 89. New York, N.Y.: ACM Press.
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Abstract: This paper introduces a data-driven representation and modeling technique for simulating non-linear heterogeneous soft tissue. It simplifies the construction of convincing deformable models by avoiding complex selection and tuning of physical material parameters, yet retaining the richness of non-linear heterogeneous behavior. We acquire a set of example deformations of a real object, and represent each of them as a spatially varying stress-strain relationship in a finite-element model. We then model the material by non-linear interpolation of these stress-strain relationships in strain-space. Our method relies on a simple-to-build capture system and an efficient run-time simulation algorithm based on incremental loading, making it suitable for interactive computer graphics applications. We present the results of our approach for several non-linear materials and biological soft tissue, with accurate agreement of our model to the measured data.
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