Temporal Parameter-Free Deep Skinning of Animated Meshes

Moutafidou, Anastasia; Toulatzis, Vasileios; Fudos, Ioannis

doi:10.1007/978-3-030-89029-2_1

Cited by 3 publications

(2 citation statements)

References 23 publications

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“…A continuation of this work is presented in [23]. The authors extended their earlier method by first assigning vertices to clusters influenced by bones and then deriving weights using a deep-learning approach.…”

Section: Related Workmentioning

confidence: 99%

Techniques for Skeletal-Based Animation in Massive Crowd Simulations

Păduraru

Paduraru

2022

Computers

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Crowd systems play an important role in virtual environment applications, such as those used in entertainment, education, training, and different simulation systems. Performance and scalability are key factors, and it is desirable for crowds to be simulated with as few resources as possible while providing variety and realism for agents. This paper focuses on improving the performance, variety, and usability of crowd animation systems. Performing the blending operation on the Graphics Processing Unit (GPU) side requires no additional memory other than the source and target animation streams and greatly increases the number of agents that can simultaneously transition from one state to another. A time dilation offset feature helps applications with a large number of animation assets and/or agents to achieve sufficient visual quality, variety, and good performance at the same time by moving animation streams between the running and paused states at runtime. Splitting agents into parts not only reduces asset creation costs by eliminating the need to create permutations of skeletons and assets but also allows users to attach parts dynamically to agents.

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Section: Related Workmentioning

confidence: 99%

Techniques for Skeletal-Based Animation in Massive Crowd Simulations

Păduraru

Paduraru

2022

Computers

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“…Their proposed rigidity estimation algorithm determined the nonlinear relationship between the parameters and the deformation of the skinning model. Moutafidou et al [28] used the skinning model and a new animated mesh sequence to construct a discriminator and a generator, respectively, to obtain a simplified model while reducing the error of model simplification. Kruppa et al [29] proposed an intersection-free skinning method to approximate disk B-spline shapes, which effectively solved the problems of self-intersections and cusps in modeling.…”

Section: Introductionmentioning

confidence: 99%

Fast Reconstruction Model of the Ship Hull NURBS Surface with Uniform Continuity for Calculating the Hydrostatic Elements

Zhu,

Shi,

Liu

et al. 2023

JMSE

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The fast reconstruction of the ship hull nonuniform rational B-spline (NURBS) surface with uniform continuity is essential for calculating hydrostatic elements such as waterplane area and molded volume in real time. Thus, this study proposes a fast reconstruction model with uniform continuity to solve the problem of uniform continuity and splicing in the separate model of hull bow and stern surfaces. The proposed model includes the NURBS curve generation (UCG) algorithm with uniform continuity and the hybrid NURBS surface generation (HSG) algorithm. The UCG algorithm initially fits the feature points using the global interpolation algorithm and then precisely constructs straight-line segments in the curve using the improved flattening algorithm. In comparison, the HSG algorithm adaptively selects the surface knot vectors according to the parameters of the section curves. In this study, the profile of discontinuous compartments is uniformly expressed, effectively avoiding various articulation problems in separation modeling. The results of comparative experiments show that the NURBS surface generated using the HSG algorithm can accurately express the characteristics of various parts of the hull with uniform continuity, and the calculation speed of the proposed model can be increased by up to 8.314% compared with the existing best-performing algorithms. Thus, the proposed model is effective and can improve computational efficiency to a certain extent. The NURBS surfaces generated by the proposed model can be further applied to calculating the hydrostatic elements of hulls and compartments.

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Deep fusible skinning of animation sequences

Moutafidou,

Toulatzis,

Fudos

2023

Vis Comput

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Animation compression is a key process in replicating and streaming animated 3D models. Linear Blend Skinning (LBS) facilitates the compression of an animated sequence while maintaining the capability of real-time streaming by deriving vertex to proxy bone assignments and per frame bone transformations. We introduce a innovative deep learning approach that learns how to assign vertices to proxy bones with persistent labeling. This is accomplished by learning how to correlate vertex trajectories to bones of fully rigged animated 3D models. Our method uses these pretrained networks on dynamic characteristics (vertex trajectories) of an unseen animation sequence (a sequence of meshes without skeleton or rigging information) to derive an LBS scheme that outperforms most previous competent approaches by offering better approximation of the original animation sequence with fewer bones, therefore offering better compression and smaller bandwidth requirements for streaming. This is substantiated by a thorough comparative performance evaluation using several error metrics, and compression/bandwidth measurements. In this paper, we have also introduced a persistent bone labeling scheme that (i) improves the efficiency of our method in terms of lower error values and better visual outcome and (ii) facilitates the fusion of two (or more) LBS schemes by an innovative algorithm that combines two arbitrary LBS schemes. To demonstrate the usefulness and potential of this fusion process, we have combined the outcome of our deep skinning method with that of Rignet—which is a state-of-the-art method that performs rigging on static meshes—with impressive results.

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Temporal Parameter-Free Deep Skinning of Animated Meshes

Cited by 3 publications

References 23 publications

Techniques for Skeletal-Based Animation in Massive Crowd Simulations

Techniques for Skeletal-Based Animation in Massive Crowd Simulations

Fast Reconstruction Model of the Ship Hull NURBS Surface with Uniform Continuity for Calculating the Hydrostatic Elements

Deep fusible skinning of animation sequences

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