Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High-quality meshing and optimization method applied to cutting of virtual surgery

A technology of meshing and virtual surgery, applied in image data processing, 3D modeling, instruments, etc., can solve the problems of adverse effects of surgical simulation process, difficult to deal with partial cutting, reducing calculation efficiency and stability of cutting simulation

Inactive Publication Date: 2018-09-14
HARBIN UNIV OF SCI & TECH
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the cutting simulation, the geometry and topology of the tetrahedron will change greatly, and ill-conditioned elements will be generated during the mesh division and generation process, which will reduce the calculation efficiency and stability of the cutting simulation, and cause serious damage to the surgical simulation process. Negative Effects
And it is difficult to handle the case of partial cutting in the current tetrahedron-based cutting method
Therefore, the processing of grids has always been a research hotspot in cutting simulation, and it is still a very challenging problem so far.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-quality meshing and optimization method applied to cutting of virtual surgery
  • High-quality meshing and optimization method applied to cutting of virtual surgery
  • High-quality meshing and optimization method applied to cutting of virtual surgery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] figure 1 A flow chart of a high-quality mesh division and optimization method in virtual surgical cutting is given, and the present invention will be further described below in combination with specific embodiments.

[0037] The present invention provides a high-quality mesh division and optimization method in virtual surgical cutting, and the main steps are introduced as follows:

[0038] The first step is to construct a separation surface, and construct a separation surface according to the contact position between the cutting path and the mesh model, as follows:

[0039] (1) Insert nodes according to the contact position between the cutting path and the mesh model,

[0040] a. For the internal tetrahedral mesh, if the cutting path only passes through the vertices of the tetrahedron, no new node is inserted; if the cutting path intersects with three or more sides of the tetrahedron (full cutting), then the cutting path and the tetrahedral mesh The intersections form...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a high-quality meshing and optimization method applied to the cutting of a virtual surgery. The novel meshing and optimization method is provided to solve the problem of partialcutting in the cutting operation of the virtual surgery and instable simulation caused by poor mesh quality. The method includes the following steps of: 1, separation surface construction: a separation surface is constructed according to the contact position of a cutting tool and a mesh model; 2, mesh splitting: mesh splitting is carried out according to the separation surface constructed in thestep 1, so that an incision can be generated; and 3, mesh optimization: mesh optimization is performed on meshes formed after meshing, so that the quality of the meshes can be further improved.

Description

technical field [0001] The invention relates to a method in virtual surgical cutting simulation, in particular to a high-quality grid division and optimization method in virtual surgical cutting. Background technique [0002] Virtual surgery is an important research direction in the field of virtual reality. It is a new interdisciplinary research field integrating modern medicine, computer graphics, computer vision, biomechanics, materials science and many other disciplines. Doctors can use the virtual surgery system to realize various capabilities such as surgical plan customization, surgical teaching, surgical skill training, and postoperative rehabilitation. With the continuous development of virtual reality technology and the continuous improvement of computer hardware performance, virtual surgery has been more and more widely studied. Cutting simulation is a basic and key technology in virtual surgery, which requires high accuracy and real-time performance of cutting s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/20
CPCG06T17/20G06T2210/41
Inventor 王沫楠马玉政
Owner HARBIN UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com