A Method for Human-Computer Interactive Editing of Segmentation Results of Volume Data
A human-computer interaction and volume data technology, applied in the field of human-computer interaction editing, can solve the problems of not making full use of volume data information, unable to combine 3D interaction and 2D interaction, etc. Effect
Active Publication Date: 2022-04-01
TSINGHUA UNIV
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[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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[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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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. Including: generate triangular mesh model and surface rendering of volume data segmentation results to be edited; perform volume rendering on volume data; mix volume rendering and surface rendering results to obtain a unified view; record user mouse interaction to obtain stroke lines, use light The projection method obtains the intersection of the extension surface and the volume data to obtain the cross-section grid and displays the gray level of the volume data; intersects the cross-section grid with the segmentation result grid to obtain the intersection line; planarizes the cross-section grid and the intersection line, and Interactively edit the intersecting lines on the two-dimensional view; establish a triangle mesh optimization model based on the volume data gradient, decompose and iteratively optimize the objective function according to the editing results of the intersection lines, and obtain the optimized triangle mesh vertex coordinates, which is Interactively edit results. This method improves the segmentation accuracy and interactive editing accuracy 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...
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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