Automatic shape adjustment at joints for the implicit skinning

Hachette, Olivier; Canezin, Florian; Vaillant, Rodolphe; Mellado, Nicolas; Barthe, Loïc

doi:10.1016/j.cag.2021.10.018

Cited by 3 publications

(2 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Implicit skinning in geometric interactive skinning methods is commonly used to solve skin self-collision and handle reasonable deformation at joints, requiring more user interaction to fully parameterize. Hachette et al designed a specialized optimization framework for implicit skinning based on particle systems and dynamic shell meshes, and optimized the shape of the filled mesh to achieve reasonable skin deformation at joint rotations [8]. The same topology structure as the human body can produce the most realistic animation effects in digital clothing body animation, but its application limitations are strong.…”

Section: Related Workmentioning

confidence: 99%

Application of Skeletal Skinned Mesh Algorithm Based on 3D Virtual Human Model in Computer Animation Design

Zhan

2024

IJACSA

View full text Add to dashboard Cite

3D virtual character animation is the core technology of games, animation, and virtual reality. To improve its visual and realistic effects, the research focused on the skeleton skinned mesh algorithm. Firstly, a three-dimensional human body model was established based on motion capture data. Then, the skin vertex weight calculation and bone skin animation design were completed for the human body model. These experiments confirm that the designed weight calculation method has a smooth weight transition and good computational stability. The designed skinned mesh algorithm outperforms its skinned mesh algorithms in accuracy, recall, and area under curve values, with a maximum area under curve value of 0.927. Its smoothness and volume retention rate are both above 90.00%, and there is no obvious collapse phenomenon. Its other objective and subjective evaluation indicators are superior to the existing advanced skinned mesh algorithms processing, and the skin effect is realistic and smooth. Overall, this study contributes to the creation of 3D virtual character animation, enhances the visual realism of virtual creation, and provides key support for the animation performance of virtual characters.

show abstract

Section: Related Workmentioning

confidence: 99%

Application of Skeletal Skinned Mesh Algorithm Based on 3D Virtual Human Model in Computer Animation Design

Zhan

2024

IJACSA

View full text Add to dashboard Cite

show abstract

“…The skin deformation is computed by skinning techniques, in which the core idea is to establish a hierarchical skeleton for the articulated character to attach a mesh model (skin) to the frame, and then drive the mesh model movement using the animation data of the skeleton. [27,28] Regarding skinning, more attention was devoted to skeleton-based linear blend skinning (LBS) methods, [29] in which the surface deformation is restricted to the skeletal posture that entirely specifies the skin deformation. However, LBS generally relies on optimization in a vast parameter space with numerous degrees of freedom, which is computationally costly and frequently leads to the issue of local minima.…”

Section: Introductionmentioning

confidence: 99%

Biorobotic Waterfowl Flipper with Skeletal Skins in a Computational Framework: Kinematic Conformation and Hydrodynamic Analysis

Huang

Wang

Liang

et al. 2023

Advanced Intelligent Systems

View full text Add to dashboard Cite

Cormorants (Phalacrocoraxe), types of aquatic birds, utilize the compliance/flexibility of the flippers and exploit hydrodynamic/biomechanic processes to accomplish diverse operations. Particularly, the flipper‐propelled locomotion exhibits traits such as super‐redundancy and large deformations, necessitating depiction of both movements of the rigid skeletons as well as local deformations of the soft tissues. However, there are few well‐established kinematic/hydrodynamic framework models and constitutive equations for such rigid–flexible intrinsically coupled biosystems. Herein, combined with a skeletal skinning algorithm to handle the deformation of a flexible body attached to a rigid body, a numerical computation framework for an in‐depth fluid–structure interaction is presented, which enables the capture of viscoelastic and anisotropic characteristics of a highly compliant 3D rigid–flexible coupled model in a low‐Reynolds‐number flow. Considering the biorobotic cormorant flipper with a nonuniformly distributed stiffness as a representative, the challenging issue of controlling a biomechanically compliant flipper to synthesize realistic locomotion sequences, including rigid skeleton movements and soft tissue deformations, is addressed. Furthermore, a numerical computational hydrodynamic analysis is performed to demonstrate that the cormorant flipper can generate 5 N fluid force and 0.45 N m fluid moment during the turning operation in 0.8 s, which is consistent with the former experimental results.

show abstract