3D Cutout Region Extraction via 2D Boundary Projection
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Solution Overview
Problem
Existing techniques for cutting out a three-dimensional cutout region from a three-dimensional model require users to input operations for designating regions from multiple directions, increasing operational burden and complexity, especially when the shape of the region in the normal direction is complicated.
Innovation Solution
The method involves acquiring an input instruction to designate a boundary plane component of the three-dimensional cutout region on a two-dimensional plane, generating a three-dimensional provisional model demarcated by this boundary, estimating the boundary normal component by correcting the shape of the provisional model, and cutting out the region demarcated by the normal component as the three-dimensional cutout region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If users designate boundaries from multiple directions to accurately cut out three-dimensional regions, then cutting precision is improved, but operational burden increases
Solution Approach 1:
The patent projects the three-dimensional model onto a two-dimensional plane for user interaction, then reconstructs the three-dimensional cutout region by estimating normal components from the two-dimensional boundary designation. This dimensionality reduction allows users to operate on a simple 2D interface while achieving accurate 3D cutting results.
Solution Approach 2:
The system automatically estimates the boundary normal component by correcting the shape of the three-dimensional provisional model based on the designated boundary plane component. This self-service mechanism eliminates the need for users to manually input boundary designations from multiple directions, reducing operational burden while maintaining cutting precision.
2Measurement precision
If users input operations for designating regions from multiple directions, then boundary accuracy is improved, but device complexity increases
Solution Approach 1:
The patent extracts only the essential boundary plane component designation from the user, separating this minimal input from the complex task of defining complete three-dimensional boundaries. The system then uses this extracted information to automatically generate the full boundary definition, reducing both operational and device complexity.
Solution Approach 2:
The system changes the parameter representation from requiring multiple directional boundary specifications to using a single boundary plane component on a projected plane. By transforming the problem into parameter space, the system achieves boundary accuracy with simplified user input and reduced operational complexity.
3Manufacturing precision
If the shape of the cutout region in normal direction is complicated, then cutting precision is maintained, but operational burden increases
Solution Approach 1:
The system performs self-service by automatically correcting the shape of the three-dimensional provisional model to estimate the boundary normal component. This automated shape correction handles complex geometries in the normal direction without requiring additional user input, maintaining cutting precision while reducing operational burden for complicated shapes.
Data Source
AI summary
An information processing device acquires an input instruction to designate a boundary plane component that is a plane component of a boundary of a three-dimensional cutout region cut out from a three-dimensional model of an object on a two-dimensional plane on which the three-dimensional model is projected, generates a three-dimensional provisional model demarcated by the boundary plane component in the three-dimensional model, estimates a boundary normal component of the three-dimensional cutout region by correcting a shape of the three-dimensional provisional model, the boundary normal component being a component in a normal direction orthogonal to the two-dimensional plane, and cuts out a region demarcated by the boundary normal component from the three-dimensional provisional model, as the three-dimensional cutout region.