| 한글제목(Korean Title) |
An Optimized Mass-spring Model with Shape Restoration Ability Based on Volume Conservation |
| 영문제목(English Title) |
An Optimized Mass-spring Model with Shape Restoration Ability Based on Volume Conservation |
| 저자(Author) |
Xiaorui Zhang
Hailun Wu
Wei Sun
Chengsheng Yuan
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| 원문수록처(Citation) |
VOL 14 NO. 04 PP. 1738 ~ 1756 (2020. 04) |
한글내용
(Korean Abstract) |
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영문내용
(English Abstract) |
To improve the accuracy and realism of the virtual surgical simulation system, this paper proposes an optimized mass-spring model with shape restoration ability based on volume conservation to simulate soft tissue deformation. The proposed method constructs a soft tissue surface model that adopts a new flexion spring for resisting bending and incorporates it into the mass-spring model (MSM) to restore the original shape. Then, we employ the particle swarm optimization algorithm to achieve the optimal solution of the model parameters. Besides, the volume conservation constraint is applied to the position-based dynamics (PBD) approach to maintain the volume of the deformable object for constructing the soft tissue volumetric model base on tetrahedrons. Finally, we built a simulation system on the PHANTOM OMNI force tactile interaction device to realize the deformation simulation of the virtual liver. Experimental results show that the proposed model has a good shape restoration ability and incompressibility, which can enhance the deformation accuracy and interactive realism.
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| 키워드(Keyword) |
Virtual surgery
soft tissue deformation
mass-spring model
position-based dynamics
particle swarm optimization algorithm
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| 파일첨부 |
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