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Shape-changing object real-time simulation system of virtual operation system

A virtual surgery, real-time simulation technology, applied in 3D modeling, 2D image generation, image data processing, etc., can solve problems such as low computing efficiency and insufficient system interactivity

Inactive Publication Date: 2008-10-29
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, in terms of the real-time performance of the system, the simulation system still has the disadvantages of low computational efficiency and insufficient system interaction.

Method used

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  • Shape-changing object real-time simulation system of virtual operation system
  • Shape-changing object real-time simulation system of virtual operation system

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Embodiment Construction

[0021] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0022] Such as figure 1 As shown, in the deformation simulation system of the present invention, the basic structure of the system includes two different deformation processing modules (boundary element module and shape matching module) and a state machine that controls scheduling between modules and manages information input and output.

[0023]The boundary element module establishes the partial differential equation of elastic deformation of the object, divides the surface grid units of the object, discretizes the boundary integral equation and solves the deformatio...

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Abstract

The invention discloses a real-time system for simulating the deformation of soft-issue objects in a surgery simulation system, belonging to the graphic processing technical field, which is characterized in that: a boundary meta-module first establishes a physical model for the deformed object and divides grid units on the surface of the object, carries out discretization for the boundary integral equation and figures out a deformation vector of each grid unit; according to the well-divided grid units, a shape matching module establishes mapping relations between the deformation positions and initial positions of each grid unit; a kinematics equation is established according to the positions of the grid units and the material properties of the object, to calculate the deformation recovery of the object; in the deformation process of the soft-issue object, a finite state machine makes an analysis for the stressing states of the object, and controls a currently-used deformation calculating module through the switching of the basic states. The real-time system for simulating the deformation of soft-issue objects in a surgery simulation system realizes real-time and precisely simulations for the deformation of the soft issues in interactive systems, in particular to renders the interaction between the surgical instruments and the soft issues in the surgery simulation systems are more accurate and quicker.

Description

technical field [0001] The invention relates to a real-time simulated object deformation system in the technical field of graphics processing, in particular to a real-time simulated system for deformed objects in a virtual surgery system. Background technique [0002] With the rapid development of science and technology, the continuous emergence of high-tech medical equipment provides more and more help for the modernization of medical treatment. The establishment of a virtual surgery platform plays an important role in doctor training and surgical navigation. In virtual surgery training, doctors need to operate virtual human organs, blood vessels, soft tissues, etc. by controlling surgical instruments in the virtual environment. In this interactive process, simulating the deformation of virtual organs and tissues under the operation of surgical instruments is an important part of the virtual surgery system. An accurate, real-time simulated soft tissue organ deformation sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00G06T11/00
Inventor 顾力栩朱博张静思
Owner SHANGHAI JIAO TONG UNIV
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