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Computerized cutting and stitching analogy method based on stress analysis and deformation

A force analysis and computer technology, applied in the field of simulation, can solve problems such as simulation is not realistic enough, force simulation is not realistic enough, force analysis cannot be performed, etc.

Inactive Publication Date: 2007-07-11
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

Although its simulation is realistic and easy to implement in collision detection and knotting operations, it is still not realistic enough in force simulation and cannot perform correct analysis
Others use spline fitting and other geometric simulation methods to model the suture line, but there are defects such as the simulation is not realistic enough or the force analysis cannot be done well.

Method used

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  • Computerized cutting and stitching analogy method based on stress analysis and deformation
  • Computerized cutting and stitching analogy method based on stress analysis and deformation
  • Computerized cutting and stitching analogy method based on stress analysis and deformation

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Embodiment Construction

[0026] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented under the premise of the technical solution of the present invention, and detailed implementation methods and processes are provided, but the protection scope of the present invention is not limited to the following implementations example.

[0027] After reading blood vessel data from CT or DICOM data, follow the steps shown in Figure 1 to simulate the blood vessel cutting method by computer:

[0028] (1) The blood vessel is modeled by the modeling method based on the mass point spring model and the center line drawing method, and the rigid body modeling of the cutting tool is carried out.

[0029] (2) Control the movement of the virtual blade model through an interactive device, mouse or force feedback device.

[0030] (3) Simulate the surface tension during the cutting process. When the blade model collides with the blo...

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Abstract

A computer cutting and sewing analog based on force analysis and deformation starts with model build based on material particle spring and central line drawing for soft tissue, rebuilding the object surface, abstracting a central line for the object center. The central line emits a width shaft and connecting with the surface, through center line to drive the surface for integral deformation. A reasonable quick bumping inspection technique is built based on this for cutting and sewing analog. It assimilates the merits of existing method with optimization and integration, realizing accurate and timely analog for computer aided cutting and sewing operation.

Description

technical field [0001] The invention relates to a simulation method in the technical field of image processing, in particular to a computer cutting and sewing simulation method based on force analysis and deformation. Background technique [0002] With the development of science and technology, surgical operation training can be carried out in the environment simulated by the computer, and surgical operations are performed on the virtual surgical object simulated by the computer through the peripheral equipment of the computer. Using computers to simulate surgical training allows for a dramatic reduction in surgical training time, while reducing the need for expensive experimental subjects and avoiding ethical concerns. Since the computer simulated surgery training system can provide a very realistic training environment for the operator, it can also give evaluations of the surgery exercises. Performing surgery on computer-simulated surgical objects (virtual humans or organ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00G06G7/48
Inventor 顾力栩张静思张少霆黄鹏飞
Owner SHANGHAI JIAO TONG UNIV
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