Texture mapping method and system based on three-dimensional grid model parameter design

A technology of 3D grid and model parameters, which is applied in the field of 3D visualization of medical images, can solve problems such as large distortion, inability to perform batch automatic mapping, rough surface of medical 3D reconstruction models, etc., and achieve good mapping effect

Active Publication Date: 2021-10-12
SHANDONG UNIV
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Problems solved by technology

The main reason is that there are some challenges to the mapping of human organ models: the medical 3D reconstruction model has the characteristics of rough surface and large distortion due to factors such as lesions, which makes parameterization difficult, and it is difficult to find a suitable method for high-quality Mapping; for models ...

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  • Texture mapping method and system based on three-dimensional grid model parameter design
  • Texture mapping method and system based on three-dimensional grid model parameter design
  • Texture mapping method and system based on three-dimensional grid model parameter design

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Effect test

Embodiment 1

[0065] A method for texture mapping based on three-dimensional mesh model parameter design, comprising the following steps:

[0066] Step 1: Read in a set of waist CT segmentation results in nii.gz format, and according to the labels of the segmentation results, perform 3D reconstruction to obtain a 3D mesh model of the intervertebral disc, nerve root, and dural sac;

[0067] The step 1 specifically includes:

[0068] Step 1.1: Use the nibabel library to read the segmentation results of a set of CT images in nifti compressed format;

[0069] Step 1.2: According to the mark of the segmentation result, the values ​​1, 2, and 3 of the segmentation result correspond to the nerve root, intervertebral disc, and dural sac respectively, and then divide each tissue structure into connected parts according to the connected domain;

[0070] Step 1.3: Use the marching_cubes_lewiner function in the skimage library to reconstruct the three-dimensional surface model for each part of the thr...

Embodiment 2

[0136] A texture mapping system designed based on 3D mesh model parameters, including:

[0137] The three-dimensional reconstruction module is configured to obtain the segmentation results of a group of CT images of the lumbar spine, and respectively perform reconstruction of each tissue structural surface model according to the marks of the segmentation results to obtain a three-dimensional mesh model of the lumbar spine;

[0138] The segmentation scheme determination module is configured to determine the category of each organization model according to the label of the segmentation result, and configure different segmentation schemes for different types of organizations;

[0139] The parameterization module is configured to parameterize each segmentation result, obtain a one-to-one mapping relationship between the three-dimensional model and the plane, and obtain a preliminary parameterization result;

[0140] The normalization module is configured to normalize the prelimina...

Embodiment 3

[0145] A computer-readable storage medium, in which a plurality of instructions are stored, and the instructions are suitable for being loaded and executed by a processor of a terminal device in a texture mapping method based on a three-dimensional mesh model parameter design provided in Embodiment 1. step.

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Abstract

The invention provides a texture mapping method and system based on three-dimensional grid model parameter design, and the method comprises the steps of obtaining a segmentation result of a group of CT images, and carrying out the reconstruction of each tissue structural plane model according to the mark of the segmentation result, and obtaining a three-dimensional grid model; according to the mark of the segmentation result, determining the category of each tissue model, and configuring different segmentation schemes for different categories of tissues; parameterizing each segmentation result to obtain a one-to-one mapping relation from the three-dimensional model to the plane, and obtaining a preliminary parameterization result; according to the designed texture image, normalizing the preliminary parameterization result according to the position corresponding to segmentation, and obtaining correspondence between the parameterization surface and the texture image; re-combining corresponding segmentation results or suturing the model added with the segmentation lines to obtain a three-dimensional model of a certain tissue with texture coordinates; and performing normal mapping on the model with the texture coordinates. According to the invention, batch automatic texture mapping and display can be realized.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional visualization of medical images, and in particular relates to a texture mapping method and system based on parameter design of a three-dimensional mesh model. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] Three-dimensional reconstruction technology refers to reconstructing a series of two-dimensional slice images into a three-dimensional model. The three-dimensional reconstruction technology of medical images generally refers to building a three-dimensional model of tissues and organs through a set of medical slice image data. It is an existing medical image processing tool. One of the key technologies in The 3D reconstruction technology of medical images can provide doctors with realistic 3D graphics, which can be observed from any angle and assist...

Claims

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Application Information

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IPC IPC(8): G06T15/04G06T17/20
CPCG06T15/04G06T17/20Y02T90/00
Inventor 周元峰陈晓飞马龙陆书一
Owner SHANDONG UNIV
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