--- _id: '1414' abstract: - lang: eng text: In this paper, we present a method to model hyperelasticity that is well suited for representing the nonlinearity of real-world objects, as well as for estimating it from deformation examples. Previous approaches suffer several limitations, such as lack of integrability of elastic forces, failure to enforce energy convexity, lack of robustness of parameter estimation, or difficulty to model cross-modal effects. Our method avoids these problems by relying on a general energy-based definition of elastic properties. The accuracy of the resulting elastic model is maximized by defining an additive model of separable energy terms, which allow progressive parameter estimation. In addition, our method supports efficient modeling of extreme nonlinearities thanks to energy-limiting constraints. We combine our energy-based model with an optimization method to estimate model parameters from force-deformation examples, and we show successful modeling of diverse deformable objects, including cloth, human finger skin, and internal human anatomy in a medical imaging application. acknowledgement: This work was funded in part by grants from the Spanish Ministry of Economy (TIN2012-35840), the European Research Council (ERC Starting Grant no. 280135 Animetrics), and the EU FP7 (project no. 601165 WEARHAP). author: - first_name: Eder full_name: Miguel Villalba, Eder id: 3FB91342-F248-11E8-B48F-1D18A9856A87 last_name: Miguel Villalba - first_name: David full_name: Miraut, David last_name: Miraut - first_name: Miguel full_name: Otaduy, Miguel last_name: Otaduy citation: ama: Miguel Villalba E, Miraut D, Otaduy M. Modeling and estimation of energy-based hyperelastic objects. Computer Graphics Forum. 2016;35(2):385-396. doi:10.1111/cgf.12840 apa: Miguel Villalba, E., Miraut, D., & Otaduy, M. (2016). Modeling and estimation of energy-based hyperelastic objects. Computer Graphics Forum. Wiley-Blackwell. https://doi.org/10.1111/cgf.12840 chicago: Miguel Villalba, Eder, David Miraut, and Miguel Otaduy. “Modeling and Estimation of Energy-Based Hyperelastic Objects.” Computer Graphics Forum. Wiley-Blackwell, 2016. https://doi.org/10.1111/cgf.12840. ieee: E. Miguel Villalba, D. Miraut, and M. Otaduy, “Modeling and estimation of energy-based hyperelastic objects,” Computer Graphics Forum, vol. 35, no. 2. Wiley-Blackwell, pp. 385–396, 2016. ista: Miguel Villalba E, Miraut D, Otaduy M. 2016. Modeling and estimation of energy-based hyperelastic objects. Computer Graphics Forum. 35(2), 385–396. mla: Miguel Villalba, Eder, et al. “Modeling and Estimation of Energy-Based Hyperelastic Objects.” Computer Graphics Forum, vol. 35, no. 2, Wiley-Blackwell, 2016, pp. 385–96, doi:10.1111/cgf.12840. short: E. Miguel Villalba, D. Miraut, M. Otaduy, Computer Graphics Forum 35 (2016) 385–396. date_created: 2018-12-11T11:51:53Z date_published: 2016-05-01T00:00:00Z date_updated: 2021-01-12T06:50:35Z day: '01' department: - _id: BeBi doi: 10.1111/cgf.12840 intvolume: ' 35' issue: '2' language: - iso: eng month: '05' oa_version: None page: 385 - 396 publication: Computer Graphics Forum publication_status: published publisher: Wiley-Blackwell publist_id: '5792' quality_controlled: '1' scopus_import: 1 status: public title: Modeling and estimation of energy-based hyperelastic objects type: journal_article user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 35 year: '2016' ...