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A man-machine interactive editing method for segmentation results of volume data

A technology of human -computer interaction and physical data, which is used in the field of human -computer interaction editing, can solve problems that cannot make full use of physical data information, cannot combine three -dimensional interaction and two -dimensional problems to achieve the accuracy of interactive editing, improve the segmentation accuracy, accurate interaction Effect

Active Publication Date: 2019-01-04
TSINGHUA UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to propose a method for man-machine interactive editing of the segmentation results of volume data, to overcome the technical problems in the prior art that cannot combine the advantages of three-dimensional interaction and two-dimensional interaction, and cannot make full use of volume data information, and then Improve interaction efficiency and segmentation accuracy

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  • A man-machine interactive editing method for segmentation results of volume data
  • A man-machine interactive editing method for segmentation results of volume data
  • A man-machine interactive editing method for segmentation results of volume data

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Embodiment Construction

[0038] The method for man-machine interactive editing of the segmentation results of volume data proposed by the present invention comprises the following steps:

[0039] (1) Read the segmentation results of the volume data stored in the form of binary data from the computer, use the MarchingCubes method to extract the isosurface of the segmentation results, and obtain the triangular mesh model M of the segmentation results 0 , triangular mesh model M 0 Represents the shape and volume features of the segmentation target. The target value of the extracted isosurface in the cube stepping method is 0.5. During this process, the input volume data segmentation results are stored in the form of binary data. At each position, use 0 or 1 indicates whether the position belongs to the segmentation target. If it is 0, it indicates that the position does not belong to the segmentation target. If it is 1, it indicates that the position belongs to the segmentation target. The three-dimensio...

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Abstract

The invention relates to a human-computer interactive editing method for a segmentation result of volume data, belonging to the field of digital medical technology. The method includes steps: a triangular mesh model is generated and surface rendering is performed according to the segmentation result of volume data to be edited; volume rendering of volume data is performed; the results of volume rendering and surface rendering are mixed to get a unified view; the user mouse interaction is recorded to obtain the stroke line, and the light projection method is used to obtain the intersection of the extension surface and the volume data to obtain the cross-sectional mesh and display the volume data gray level; the section mesh intersects with the segmentation result mesh to obtain the intersection line; the section mesh is planarized with the intersecting lines, and the intersecting lines are edited on the 2D view; the optimization model of triangular mesh based on volume data gradient isestablished; according to the result of intersecting line editing, the objective function is decomposed and iteratively optimized, and the optimized triangular mesh vertex coordinates are obtained, which is the result of interactive editing. The method improves the segmentation precision and interactive editing precision of volume data.

Description

technical field [0001] The invention relates to a method for man-machine interactive editing of volume data segmentation results, which belongs to the technical field of digital medical treatment. Background technique [0002] In the process of digital medical treatment, the patient's volume data is obtained through CT, MRI and other diagnosis and treatment methods, and the target area needs to be obtained through volume data segmentation technology, which is helpful for further analysis and diagnosis. Due to the complexity of medical volume data, the existing automatic segmentation technology of volume data is not universally applicable, and there are usually problems in the segmentation results. Human-computer interaction technology is needed to further edit the segmentation results. However, it is difficult to edit digital human-computer interaction for 3D volume data. The existing technology cannot solve the problems of high degree of freedom and poor interaction accurac...

Claims

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Application Information

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IPC IPC(8): G06T19/20G06T17/20
CPCG06T17/20G06T19/20
Inventor 陈莉雍俊海宋艺博
Owner TSINGHUA UNIV
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