Multiple optimization meshless soft tissue deformation simulation method
A simulation method and soft tissue technology, which is applied in the field of soft tissue simulation, can solve problems such as model instability, data point optimization, and high calculation costs, and achieve the effects of improving simulation accuracy, realistic simulation effects, and shortening search time
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[0049] This embodiment provides a multi-optimized meshless soft tissue deformation simulation method, such as figure 1 include:
[0050] (1) Obtain the vertex information of the soft tissue CT image and obtain the point cloud data. Specifically:
[0051] Acquire the CT image of the soft tissue and import it into the software Mimics, export the STL file of the 3D model, and use the MeshLab software to convert the STL file into an OBJ file to obtain the vertex information and obtain the point cloud data.
[0052] (2) Simplify the point cloud data by adopting a unified streamline method based on octree coding.
[0053] The geometric model derived by MeshLab contains a large amount of data, so the unified streamline method based on octree coding is used to simplify the points. Specifically:
[0054] (2-1) Divide the space of the point cloud data into multiple cubes with fixed side lengths, and keep the nearest point of the center of each cube;
[0055] (2-2) Calculate the octree code of ea...
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