Realistic Deformation of Human Body Shapes

Aubel, Amaury; Thalmann, Daniel

doi:10.1007/978-3-7091-6344-3_10

Cited by 27 publications

(16 citation statements)

References 18 publications

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“…A number of authors used spheres, ellipsoids and other implicit surfaces to detect and resolve collisions for cloth, skin, hair and muscles, see e.g. 48,66,58,4,49,34 . Fisher and Lin 20 used a penalty based formulation to enforce a non-interpenetration constraint between deformable bodies.…”

Section: Related Workmentioning

confidence: 99%

Simulation of clothing with folds and wrinkles

Bridson

Marino²,

Fedkiw

2005

ACM SIGGRAPH 2005 Courses on - SIGGRAPH '05

239

310

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Section: Related Workmentioning

confidence: 99%

Simulation of clothing with folds and wrinkles

Bridson

Marino²,

Fedkiw

2005

ACM SIGGRAPH 2005 Courses on - SIGGRAPH '05

239

310

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show abstract

“…This can work either with explicit anatomy knowledge [Scheepers et al 1997;Aubel and Thalmann 2000;Teran et al 2005], or without [Capell et al 2002;Guo and Wong 2005;Pratscher et al 2005]. Physically based methods generally obtain a high level of realism (delivering also dynamic effects and muscle bulges), but at high computational costs.…”

Section: Physically Based Methodsmentioning

confidence: 99%

Skinning with dual quaternions

Kavan

Collins

Žára

et al. 2007

Proceedings of the 2007 Symposium on Interactive 3D Graphics and Games

229

165

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Figure 1: A comparison of dual quaternion skinning with previous methods: log-matrix blending [Cordier and Magnenat-Thalmann 2005] and spherical blend skinning [Kavan and Zara 2005]. The proposed approach not only eliminates artifacts, but is also much easier to implement and more than twice as fast. AbstractSkinning of skeletally deformable models is extensively used for real-time animation of characters, creatures and similar objects. The standard solution, linear blend skinning, has some serious drawbacks that require artist intervention. Therefore, a number of alternatives have been proposed in recent years. All of them successfully combat some of the artifacts, but none challenge the simplicity and efficiency of linear blend skinning. As a result, linear blend skinning is still the number one choice for the majority of developers. In this paper, we present a novel GPU-friendly skinning algorithm based on dual quaternions. We show that this approach solves the artifacts of linear blend skinning at minimal additional cost. Upgrading an existing animation system (e.g., in a videogame) from linear to dual quaternion skinning is very easy and has negligible impact on run-time performance.

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“…Extensive efforts were also put into mapping fibre textures showing orientations for the different muscle classes, providing an ideal visual learning tool. Aubel and Thalman (2000) used a two-layered muscle approach whereby a set of action lines is modelled based on bone movement, and then used to deform an outer surface with muscle collision a feature. This approach was computationally fast and useful in clinical assessment.…”

Section: Background and Previous Workmentioning

confidence: 99%

A cerebral palsy assessment tool using anatomically based geometries and free-form deformation

Fernandez

Walt

et al. 2005

Biomech Model Mechanobiol

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A geometrical analysis tool for investigating muscle length change in cerebral palsy (CP) patients is presented. A subset of anatomically based geometries from the International Union of Physiological Sciences (IUPS) Physiome Project is used, which is derived from the visible human (VH) data set with muscle attachment information, and customised using volume-preserving free-form deformation (FFD), the 'host-mesh' technique. The model's intended use is to provide pre- and post-surgery assessment for muscle lengthening, a surgery performed to help slacken tight muscles and improve gait. The model is illustrated using healthy patient data from motion capture as a validation followed by three CP case studies to highlight its use. The methodology is presented in three stages, (1) a FFD of the complete lower limb, (2) a focused geometric study on the semimembranosus (SM) and gastrocnemius (GT) muscles, and (3) an improved hybrid mechanics-FFD approach as an improvement for future analysis, with differentiation between muscle and tendon lengthening, and contact detection between sliding muscles. Finally, the issues, limitations, in particular with the marker system, and model improvements are discussed.

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Realistic Deformation of Human Body Shapes

Cited by 27 publications

References 18 publications

Simulation of clothing with folds and wrinkles

Simulation of clothing with folds and wrinkles

Skinning with dual quaternions

A cerebral palsy assessment tool using anatomically based geometries and free-form deformation

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