3D Shape Data Editing Device Edge Reproduction
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Solution Overview
Problem
Conventional methods for converting three-dimensional shape data composed of voxels into polygons fail to accurately reproduce the edges of an object, especially where forming surfaces connect at acute angles, leading to discrepancies in shape representation.
Innovation Solution
A three-dimensional shape data editing device and program that extracts edges from the original object, combines contiguous edges, and converts voxel data into polygon data, reconfiguring edge polygons to accurately represent the original object's edges by specifying and reconfiguring edge forming surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional conversion methods (e.g., marching cubes) are used to convert voxel data to polygon data, then the conversion process is simple and fast, but the edge shapes of the original object are not accurately reproduced
Solution Approach 1:
The patent segments the conversion process into distinct stages: extracting edges from the original object, identifying corresponding voxels, converting to polygons, and reconfiguring edge polygons. This segmentation allows each stage to be optimized independently, improving edge accuracy without overwhelming complexity
Solution Approach 2:
The patent performs preliminary edge extraction from the original object before the main conversion process. By identifying and storing edge information in advance, the conversion process can focus on accurately reproducing these edges, improving final accuracy without significantly increasing overall complexity
2Manufacturing precision
If more detailed polygon data is used to accurately represent edges, then shape representation accuracy improves, but data complexity and storage requirements increase
Solution Approach 1:
The patent applies local quality by reconfiguring only the edge polygons that require high accuracy, while other surface polygons can use standard conversion. This localized refinement maintains high shape accuracy at edges without unnecessarily increasing data complexity across the entire model
Solution Approach 2:
The patent creates a simplified representation of edge geometry by copying and reconfiguring only the necessary polygon data to reproduce edge shapes. This selective copying avoids storing redundant information while maintaining accuracy where needed
Data Source
AI summary
A three-dimensional shape data editing device including a processor configured to, with regard to an object represented by a first three-dimensional shape configured using multiple forming surfaces of at least one of flat surfaces and curved surfaces, a second three-dimensional shape in which the object is configured using multiple three-dimensional elements, and a third three-dimensional shape that is converted from the second three-dimensional shape such that the object is represented by the multiple forming surfaces, specify edge forming surfaces that correspond to edges of the object extracted from the first three-dimensional shape, with respect to the third three-dimensional shape, and configure the edge forming surfaces in the third three-dimensional shape such that shapes of the edges of the object represented by the first three-dimensional shape are reproduced.