Three-dimensional support structure generation method and system based on simplified central axis transformation

Through the central axis transformation and branch structure screening technology, combined with special center points and slice algorithms, a three-dimensional support structure with the smallest error is generated, which solves the problem that the three-dimensional model slice algorithm in the existing technology cannot capture semantic information and geometric features, and achieves more accurate simplified model.

CN119206133AActive Publication Date: 2024-12-27HEFEI UNIV OF TECH
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Patent Information

Application Number
CN202411334033.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-24
Publication Date
2024-12-27
Estimated Expiration
2044-09-24

AI Technical Summary

Technical Problem

The existing three-dimensional model slicing algorithm cannot effectively capture semantic information and geometric features in the model, resulting in a large difference between the simplified support structure and the initial model, especially when dealing with models with complex geometric features and rich semantic information.

Method used

Multiple center points are obtained through central axis transformation, branch structure is constructed, branch structure with the largest average radius is selected as the center axis, combined with special center points and preset total slices, slice processing is performed, three-dimensional support structure is generated, and the error is reconstruction Optimize the final result.

Benefits of technology

It realizes the more accurate expression of the important features of the three-dimensional model, and the generated support structure and the original model have the smallest error, which is suitable for simplified processing of complex models.

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Abstract

The invention relates to a three-dimensional support structure generation method and system based on simplified central axis transformation. The method comprises the following steps: acquiring a to-be-processed three-dimensional model; performing central axis transformation and simplification processing on the three-dimensional model to obtain a plurality of central points, and constructing a plurality of branches according to radius variation amplitudes among the plurality of central points; processing each main shaft: identifying a special central point of the main shaft from each central point corresponding to the main shaft, and slicing the three-dimensional model on the main shaft according to a corresponding slicing algorithm based on the special central point and a preset total slicing amount to obtain a plurality of slices; based on each slice, generating a three-dimensional support structure corresponding to the three-dimensional model, and comparing the generated structure with the three-dimensional model to obtain a reconstruction error; and after all the main shafts are processed, generating a final three-dimensional support structure of the three-dimensional model according to the main shaft with the minimum reconstruction error and all the slices corresponding to the main shaft with the minimum reconstruction error. The difference degree between the generated three-dimensional supporting structure and the original three-dimensional model is small.
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Citation Information

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