Vertebra CT image three-dimensional visualization method

Abstract

The invention discloses a vertebra CT image three-dimensional visualization method and belongs to the medical field. In order to solve the problem that a large quantity of voxels and equivalent pointsare processed in the process of performing three-dimensional reconstruction visualization through a traditional Marching Cubes algorithm, the vertebra CT image three-dimensional visualization methodmakes improvement on the theoretical basis of the traditional Marching Cubes algorithm, wherein when subdivision configuration of triangular patches in the voxels is determined, a golden section method is utilized to calculate intersection points of an isosurface and voxel edges, the triangular patches are fitted into the isosurface, normal vectors of the triangular patches are calculated, a central difference method is adopted to solve gradient values of eight vertexes inside the voxels, and display, rotation, scaling and other interactive operation are completed through a VTK (VisualizationToolkit). In this way, transparent and semi-transparent visual function setting is realized, it is convenient for doctors and researchers to perform observation and analysis from arbitrary angles, andthe method provides a theoretical basis and technical support for observation of vertebra internal and external structure information and treatment and research in a later period.

Description

technical field [0001] The invention belongs to the field of medicine, and in particular relates to a three-dimensional visualization method of vertebral CT images in vertebral clinical surgery and scientific research. Background technique [0002] Marching Cubes algorithm is a classic algorithm in surface rendering of 3D reconstruction visualization method. It has a simple principle and high reconstruction efficiency, but the quality and speed of its reconstruction results need to be further improved. Researchers at home and abroad have successively proposed interval tree hardware acceleration to improve the algorithm. In terms of processing efficiency, Lopes proposed a method to improve the rendering accuracy. In the process of 3D reconstruction and visualization of the traditional Marching Cubes algorithm, the problem of dealing with too many voxels and equivalent points needs to be further improved. The effect of 3D reconstruction visualization directly affects The succe...

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Problems solved by technology

[0003] The object of the present invention is to solve the problem of too many voxels and equivalent points in the traditional Marching Cubes algorithm in the process of three-dimensional r

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