Example‐Driven Deformations Based on Discrete Shells

Fröhlich, Stefan; Botsch, Mario

doi:10.1111/j.1467-8659.2011.01974.x

Cited by 95 publications

(164 citation statements)

References 47 publications

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“…Apart from parametrization based deformation techniques, directly editing mesh animations, with ideas similar to static mesh deformation, have emerged that overcome some of the limitations of parametric models [Sumner et al 2007;Kircher and Garland 2009;Fröhlich and Botsch 2011]. These are powerful methods for editing, but solve a different problem compared to this paper which studies exploration of an underlying lower dimensioinal deformation space.…”

Section: Mesh Deformationmentioning

confidence: 99%

Sparse localized deformation components

et al. 2013

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Figure 1: Our method automatically decomposes any mesh animations like performance captured faces (left) or muscle deformations (right) into sparse and localized deformation modes (shown in blue). Left: a new facial expression is generated by summing deformation components. Our method automatically separates spatially confined effects like separate eyebrow motions from the data. Right: Our algorithm extracts individual muscle and bone deformations. The deformation components can then be used for convenient editing of the captured animation. Here, the deformation component of the clavicle is over-exaggerated to achieve an artistically desired look. AbstractWe propose a method that extracts sparse and spatially localized deformation modes from an animated mesh sequence. To this end, we propose a new way to extend the theory of sparse matrix decompositions to 3D mesh sequence processing, and further contribute with an automatic way to ensure spatial locality of the decomposition in a new optimization framework. The extracted dimensions often have an intuitive and clear interpretable meaning. Our method optionally accepts user-constraints to guide the process of discovering the underlying latent deformation space. The capabilities of our efficient, versatile, and easy-to-implement method are extensively demonstrated on a variety of data sets and application contexts. We demonstrate its power for user friendly intuitive editing of captured mesh animations, such as faces, full body motion, cloth animations, and muscle deformations. We further show its benefit for statistical geometry processing and biomechanically meaningful animation editing. It is further shown qualitatively and quantitatively that our method outperforms other unsupervised decomposition methods and other animation parameterization approaches in the above use cases.

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Section: Mesh Deformationmentioning

confidence: 99%

Sparse localized deformation components

et al. 2013

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“…Fröhlich and Botsch [10] also reconstructed the intermediate pose by specifying the length and dihedral angle of its edges. Marras et al [31] propose an approach to efficient interpolation for articulated shapes using mixed shape spaces.…”

Section: Related Workmentioning

confidence: 99%

“…The proposed initialization can easily be transplanted to other shape interpolation methods based on nonlinear optimization [8,10,2].…”

Section: Introductionmentioning

confidence: 99%

Fast as-isometric-as-possible shape interpolation

Zhang

et al. 2015

Computers & Graphics

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“…Most existing 2D and 3D deformation systems are based on the WIMP paradigm [2,3,6,7,12,20]. In order to perform deformations, the user must express successive actions using the mouse, often in combination with various different keyboard shortcuts.…”

Section: Previous Workmentioning

confidence: 99%

Tangible user interfaces for physically-based deformation: design principles and first prototype

et al. 2012

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We present design principles for conceiving tangible user interfaces for the interactive physically-based deformation of 3D models. Based on these design principles, we developed a first prototype using a passive tangible user interface that embodies the 3D model. By associating an arbitrary reference material with the user interface, we convert the displacements of the user interface into forces required by physically-based deformation models. These forces are then applied to the 3D model made out of any material via a physical deformation model. In this way, we compensate for the absence of direct haptic feedback, which allows us to use a force-driven physically-based deformation model. A user N. Takouachet ( ) · N. Couture · P. Reuter · P. Joyot · G. Rivière · N. study on simple deformations of various metal beams shows that our prototype is usable for deformation with the user interface embodying the virtual beam. Our first results validate our design principles, plus they have a high educational value for mechanical engineering lectures.

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Example‐Driven Deformations Based on Discrete Shells

Cited by 95 publications

References 47 publications

Sparse localized deformation components

Sparse localized deformation components

Fast as-isometric-as-possible shape interpolation

Tangible user interfaces for physically-based deformation: design principles and first prototype

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