System for rapidly deforming a graphical object

Details System for rapidly deforming a graphical object System for rapidly deforming a graphical object

1997-01-08

2000-05-30

Nguyen, Phu K.

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

G06F 1500

Patent

active

060696346

ABSTRACT:
A voxel-based system for rapidly deforming volumetric objects performs simple deformation calculations for each element of the graphical object to be deformed such that when the object is manipulated, the object stretches or contracts through the movement of a selected element, followed by movement of neighboring elements only if a maximum or minimum preset distance is exceeded between the moved element and its neighbor. Thus elements are moved only if they need to be, which eliminates calculating movements of elements not affected by movement of the selected element. This in turn allows fast propagation of the deformation through the volume represented by the object to the deformed, with the motion constraints being similar to the motion provided by a set of linked elements in a chain.

REFERENCES:
patent: 5592599 (1997-01-01), Lindholm
Demetri Terzopoulos, et al.; "Modeling Inelastic Deformation: Viscoelastiy, Plasticity, Fracture"; Aug., 1988, Computer Graphics, vol. 22, No. 4. pp. 269-278.
Eiji Takahashi, et al.; "Surgical Simulation of Elastic Organs"; Jul., 1996; Medical Imaging Technology, vol. 14, No. 4.
Hidemasa Yoshida, et al.; "A Volumetric Deformation Technique Based on Voxel Data"; ITE Technical Report, vol. 18, No. 23, pp. 23-28.
S. Kai, et al.; "Elastic Organ Model for Surgical Planning System"; Jul., 1996; Medical Imaging Technology, vol. 14, No. 4.

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