Volume animation using the skeleton tree

Gagvani, Nikhil; Kenchammana-Hosekote, D.; Silver, Deborah

doi:10.1145/288126.288152

Cited by 23 publications

(20 citation statements)

References 8 publications

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“…Moreover, continuity constraints have to be met in order to avoid cracks between the tetrahedra during deformation. To circumvent this problem, the skeleton trees method [11] was proposed that uses the skeleton representation of the data to aid as bones for deformation. The same disadvantage as in the texture mapping approach is that the extraction of the skeleton representation requires considerable amount of preprocessing time which is dependent on the dataset resolution.…”

Section: Isrn Computer Graphicsmentioning

confidence: 99%

A Novel GPU-Based Deformation Pipeline

Movania

Lin

2012

ISRN Computer Graphics

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We present a new deformation pipeline that is independent of the integration solver used and allows fast rendering of deformable soft bodies on the GPU. The proposed method exploits the transform feedback mechanism of the modern GPU to bypass the CPU read-back, thus, reusing the modified positions and/or velocities of the deformable object in a single pass in real time. The whole process is being carried out on the GPU. Prior approaches have resorted to CPU read-back along with the GPGPU mechanism. In contrast, our approach does not require these steps thus saving the GPU bandwidth for other tasks. We describe our algorithm along with implementation details on the modern GPU and finally conclude with a look at the experimental results. We show how easy it is to integrate any existing integration solver into the proposed pipeline by implementing explicit Euler integration in the vertex shader on the GPU.

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Section: Isrn Computer Graphicsmentioning

confidence: 99%

A Novel GPU-Based Deformation Pipeline

Movania

Lin

2012

ISRN Computer Graphics

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“…An interactive tool is used to select points on both the control model and the scan data-set for manual registration. Previously [14,46] the discrete medial axis has been used to automate the placement of joints in 3D models. However, human skeletal joints such as the shoulder, do not necessarily lie on the medial axis.…”

Section: Manual Feature Locationmentioning

confidence: 99%

“…The inequality constraint is transformed to an equality constraint by augmenting the match matrix with a set of slack variables, Eq. (14).…”

Section: Model To Surface Matchingmentioning

confidence: 99%

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Animated statues

Starck

Collins

Smith

et al. 2003

Machine Vision and Applications

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In this paper we present a layered framework for the animation of high-resolution human geometry captured using active 3D sensing technology. Commercial scanning systems can now acquire highly accurate surface data across the whole-body. However, the result is a dense, irregular, surface mesh without any structure for animation. We introduce a model-based approach to animating a scanned data-set by matching a generic humanoid control model to the surface data. A set of manually defined feature points are used to define body and facial pose, and a novel shape constrained matching algorithm is presented to deform the control model to match the scanned shape. This model-based approach allows the detailed specification of surface animation to be defined once for the generic model and re-applied to any captured scan. The detail of the high-resolution geometry is represented as a displacement map on the surface of the control model, providing smooth reconstruction of detailed shape on the animated control surface. The generic model provides animation control over the scan data-set, and the displacement map provides control of the high-resolution surface for editing of geometry, or level of detail in reconstruction or compression.

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“…In earlier work [15], we described the animation of binary volumes using a skeleton-tree. Binary volumes are volumes with just ones and zeros.…”

Section: Volume Animation Pipelinementioning

confidence: 99%