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Real-time soft body dissection simulation with parallelized graph-based shape matching on GPU.

Peng Yu1, Zhiyuan Zhao1, Ruiqi Wang1

  • 1State Key Laboratory of Virtual Reality Technology and Systems, School of Computer Science and Engineering, Beihang University, Beijing, China.

Computer Methods and Programs in Biomedicine
|April 17, 2024
PubMed
Summary
This summary is machine-generated.

This study introduces a new graph-based method for realistic soft tissue dissection in virtual surgery. The Aggregate Finding Connected Components (AFCC) algorithm enables real-time, complex cuts without visual artifacts.

Keywords:
K.6.1 [computer graphics]Virtual surgery simulation

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Area of Science:

  • Virtual reality
  • Computer simulation
  • Surgical technology

Background:

  • Interactive soft tissue dissection is crucial for virtual surgery systems.
  • Current cutting algorithms face challenges with mesh complexity, simulation overhead, and visual artifacts.

Purpose of the Study:

  • To propose a novel graph-based shape-matching method for real-time, flexible, progressive, and discontinuous soft tissue cuts.
  • To improve the efficiency and visual fidelity of virtual surgery simulations.

Main Methods:

  • Utilized shape-matching constraints within the position-based dynamics (PBD) framework.
  • Modeled soft tissue using overlapping clusters governed by shape-matching constraints.
  • Developed an Aggregate Finding Connected Components (AFCC) algorithm for robust cluster separation and GPU optimization.

Main Results:

  • The AFCC algorithm demonstrated robust management of cluster separation and expansion.
  • Achieved real-time performance for dissection simulations with over 100,000 particles.
  • Successfully supported intricate and discontinuous cutting routes without ghost forces or fragmentation artifacts.

Conclusions:

  • The proposed technique offers a real-time and robust solution for surgical dissection simulation.
  • Enables complex cuts in diverse surgical scenarios, enhancing virtual surgery applications.