3D Modeling Device Voxel Color Segmentation
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Solution Overview
Problem
Conventional 3D printers are unable to accurately color the inside of three-dimensional models as they lack data on internal structures and color information, limiting their ability to reproduce the original structure's color.
Innovation Solution
A three-dimensional modeling method and device that acquire and represent three-dimensional data using voxels, dividing them into elements in intersecting directions and assigning color data to ensure all surfaces of a voxel have an approximately identical color, using a discharge mechanism to model the structure with a laminated material and control unit to manage the coloring process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional 3D printers use surface-only polygon data for modeling, then the device complexity is low and manufacturing is simple, but the manufacturing precision and color accuracy of internal structures deteriorate
Solution Approach 1:
The invention segments the three-dimensional space into discrete voxels (volume elements), where each voxel can independently store color information. This segmentation allows internal structures to be represented and colored individually, resolving the contradiction by enabling precise internal coloring without requiring complex continuous surface representations.
Solution Approach 2:
The invention transitions from traditional two-dimensional surface polygon data to three-dimensional voxel data, adding the depth dimension to the data structure. This dimensional change enables color information to be assigned to internal volumes rather than just surfaces, improving manufacturing precision while maintaining manageable data complexity through discrete element representation.
2Manufacturing precision
If color data is assigned to each voxel element independently, then the color accuracy of internal structures improves, but the loss of information increases due to multiple surfaces of the same voxel having different colors
Solution Approach 1:
The invention applies local quality by allowing different voxels to have different color properties based on their position and the underlying three-dimensional structure. Each voxel's color is determined by its specific location and the material properties at that point, enabling accurate local color representation while maintaining overall color consistency through systematic color assignment rules.
Solution Approach 2:
The invention uses feedback mechanisms where the color of each voxel is determined by analyzing the three-dimensional structure data and applying color mapping rules that ensure consistency. The system evaluates the spatial relationships and material properties, then assigns colors with feedback loops that verify color consistency across adjacent voxels and surfaces, preventing information loss.
3Manufacturing precision
If the voxel is divided into multiple elements in intersecting directions, then the manufacturing precision of color application improves, but the productivity decreases due to increased processing time
Solution Approach 1:
The invention segments each voxel into multiple smaller elements along intersecting directions (x, y, z axes), enabling precise color application at the element level. This segmentation allows for accurate color mapping while the systematic organization of elements within voxels enables efficient batch processing, balancing precision with productivity.
Solution Approach 2:
The invention merges the processing of multiple elements within each voxel by applying color data to groups of elements simultaneously based on their spatial relationships. By combining processing operations for adjacent elements that share the same color properties, the system maintains high color application precision while improving productivity through reduced redundant calculations.
Data Source
AI summary
The three-dimensional modeling device includes a three-dimensional data acquisition unit that acquires three-dimensional data representing a three-dimensional structure with voxels, a discharge mechanism that discharges a laminated material including a plurality of kinds of dyes, and a control unit that controls the discharge mechanism based on the three-dimensional data so as to model the three-dimensional model. One of the voxels is divided into a plurality of elements in each of intersecting three directions, each of the plurality of the elements is provided with color data corresponding to one of a plurality of colors, and the color data of the element is determined such that all of a plurality of surfaces of the voxel has an approximately identical color.