3D Voxel Thresholding for Complete Repeating Unit Shapes
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Solution Overview
Problem
Existing three-dimensional object formation technologies often omit parts of unit shapes, leading to undesired functions or properties due to the calculation of voxel formation based on intensity values and thresholds, which can result in incomplete structures.
Innovation Solution
A three-dimensional object data generation apparatus that corrects voxel coordinate values and uses a three-dimensional threshold matrix to determine whether to form each voxel, ensuring complete formation of unit shapes by adjusting the threshold matrix based on attribute values and adjustment coefficients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If voxel formation is calculated based on comparison between intensity value and threshold in three-dimensional threshold matrix, then the formation process is simplified, but parts of unit shapes are undesirably omitted
Solution Approach 1:
The patent applies preliminary action by correcting voxel coordinate values before the threshold comparison process. The correction unit pre-adjusts coordinate values of voxels based on their positional relationships, ensuring that unit shapes are properly aligned and complete before the formation calculation occurs. This prevents omission of parts during the subsequent threshold-based formation process.
Solution Approach 2:
The patent implements local quality by applying different correction approaches to different voxels based on their local positional context. The correction unit identifies voxels that require coordinate adjustment based on their relationship to other voxels in the unit shape, applying localized corrections only where needed rather than uniformly to all voxels. This maintains precision for critical unit shape regions while preserving the efficiency of the threshold-based approach elsewhere.
2Manufacturing precision
If coordinate values of voxels are corrected to ensure complete unit shapes, then unit shape completeness is improved, but calculation complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the voxel correction process into distinct functional units: a correction unit that identifies and corrects coordinate values, and a separate calculation unit that performs threshold-based formation determination. This segmentation allows the correction logic to be isolated and optimized independently, reducing overall calculation complexity while maintaining unit shape completeness.
Solution Approach 2:
The patent implements parameter changes by modifying coordinate values of specific voxels based on their positional parameters. The correction unit adjusts coordinate parameters (such as position offsets) for voxels that require correction, transforming the input data to ensure complete unit shapes. This parameter-based approach is more efficient than complete recalculation, as it only modifies necessary coordinates rather than reprocessing all voxel data.
Data Source
AI summary
A three-dimensional object data generation apparatus includes an obtaining unit that obtains three-dimensional object data which represents, with plural voxels, a three-dimensional object including a shape obtained by repeating a unit shape and in which an attribute value is set for each of the plural voxels, a setting unit that sets a three-dimensional threshold matrix in which thresholds are arranged in a three-dimensional space in accordance with a predetermined basic shape, a correction unit that corrects a coordinate value of each of the plural voxels in a certain direction of the three-dimensional object such that the unit shape is formed from a first reference position in the certain direction, and a calculation unit that calculates, on a basis of the attribute value of each of the plural voxels whose coordinate values have been corrected and the three-dimensional threshold matrix, whether to form the voxel.