One of the challenging problems in surgical simulation is to reduce the computational cost to achieve interactive
refresh rates for both haptic and visualization devices, while maintaining reasonable behavioural realism. Since
human organs are predominantly based on water, they preserve overall volume during deformation. Therefore,
representing the volume-preserved behaviour in dynamic system is essential to deliver realistic organ reaction in
surgical simulation. Many existing methods for modeling and simulation of human organs often neglect the volume
preservation due to its computational complexities. Otherwise, some previous volume preservation methods
alter the material properties, resulting in hardened and unnatural dynamic behaviour. This paper presents a
novel method to model human organs with volume preservation. It keeps the material properties intact and requires
virtually no additional computation cost to address both computational efficiency and visual realism. Our
method incorporates an implicit volume constraint on a simple mass-spring system. Experiments show that the
object level volume is well maintained even under high pressure. Proposed method makes a realistic human organ
simulation possible at an interactive rate with almost no additional computational cost.
Sunwha Jung, Min Hong, Min-Hyung Choi, Volume-Preserved Human Organs for Surgical Simulation. In Proceedings of Central European Multimedia and Virtual Reality Conference, June 2005.
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