Interactive modeling of the human musculature

Aubel, Amaury; Thalmann, Daniel

doi:10.1109/ca.2001.982390

Cited by 39 publications

(18 citation statements)

References 14 publications

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“…These modules undergo deformation when the body moves and a skin simulation and collision detection algorithm is run which would realistically deform the skin where and whenever it is required. Reference [5] details a technique of efficient muscle shape deformation using the anatomical skin deformation technique. Reference [5] resorts to the creation of a muscle model, which is categorized into two layers: an action line and a surface mesh.…”

Section: Character Skinningmentioning

confidence: 99%

Curve skeleton skinning for human and creature characters

Yang¹,

Somasekharan²,

Zhang

2006

Computer Animation & Virtual

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The skeleton driven skinning technique is still the most popular method for animating deformable human and creature characters. Albeit an industry de facto due to its computational performance and intuitiveness, it suffers from problems like collapsing elbow and candy wrapper joint. To remedy these problems, one needs to formulate the non-linear relationship between the skeleton and the skin shape of a character properly, which however proves mathematically very challenging. Placing additional joints where the skin bends increases the sampling rate and is an ad hoc way of approximating this non-linear relationship. In this paper, we propose a method that is able to accommodate the inherent non-linear relationships between the movement of the skeleton and the skin shape. We use the so-called curve skeletons along with the joint-based skeletons to animate the skin shape. Since the deformation follows the tangent of the curve skeleton and also due to higher sampling rates received from the curve points, collapsing skin and other undesirable skin deformation problems are avoided. The curve skeleton retains the advantages of the current skeleton driven skinning. It is easy to use and allows full control over the animation process. As a further enhancement, it is also fairly simple to build realistic muscle and fat bulge effect. A practical implementation in the form of a Maya plug-in is created to demonstrate the viability of the technique.

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Section: Character Skinningmentioning

confidence: 99%

Curve skeleton skinning for human and creature characters

Yang¹,

Somasekharan²,

Zhang

2006

Computer Animation & Virtual

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“…This shape was deformed using a mass-spring mesh. Aubel (2001) used a similar approach with a multi-layered model based on physiological and anatomical considerations. Bourguignon and Cani (2000) proposed a model offering control of the isotropy or anisotropy of elastic material.…”

Section: Related Workmentioning

confidence: 99%

Towards a parameterization method for virtual soft tissues based on properties of biological tissue

Maciel

Boulic

Thalmann

2003

IFAC Proceedings Volumes

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Realistic mechanical models of biological soft-tissues are a key issue to allow the implementation of reliable systems to aid on orthopedic diagnosis and surgery planning. We are working on a model of articulations based on deformation of connective tissues. In the present work we present several experiments towards the parameterization of a computer soft-tissues model from the elastic properties of real materials. We display our current results and draw comments on our experiments.

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“…However, angular springs cannot deal with local inversions of the curvature. Aubel and Thalmann [11] also use an action line and a muscle mesh. The action line, represented by a polyline with any number of vertices, is moved for each posture using a predefined behavior and a simple, physically based simulation (see Human motion has always been difficult to simulate with an acceptable level of physical realism and/or believability.…”

Section: Body Deformationsmentioning

confidence: 99%

Virtual humans: thirty years of research, what next?

Magnenat‐Thalmann

Thalmann

2005

Visual Comput

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In this paper, we present research results and future challenges in creating realistic and believable Virtual Humans. To realize these modeling goals, real-time realistic representation is essential, but we also need interactive and perceptive Virtual Humans to populate the Virtual Worlds. Three levels of modeling should be considered to create these believable Virtual Humans: 1) realistic appearance modeling, 2) realistic, smooth and flexible motion modeling, and 3) realistic high-level behaviors modeling. At first, the issues of creating virtual humans with better skeleton and realistic deformable bodies are illustrated. To give a level of believable behavior, challenges are laid on generating on the fly flexible motion and complex behaviours of Virtual Humans inside their environments using a realistic perception of the environment. Interactivity and group behaviours are also important parameters to create believable Virtual Humans which have challenges in creating believable relationship between real and virtual humans based on emotion and personality, and simulating realistic and believable behaviors of groups and crowds. Finally, issues in generating realistic virtual clothed and haired people are presented.

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Interactive modeling of the human musculature

Cited by 39 publications

References 14 publications

Curve skeleton skinning for human and creature characters

Curve skeleton skinning for human and creature characters

Towards a parameterization method for virtual soft tissues based on properties of biological tissue

Virtual humans: thirty years of research, what next?

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