3D Printing Color Correction for Uniform Multi-Colored Objects

The patent applies preliminary action by performing color correction calculations before the actual 3D printing process. The system analyzes the 3D model to identify regions prone to color interference and pre-computes corrected color values for each voxel, which are then applied during printing. This proactive approach prevents color uniformity issues rather than correcting them after printing.

The patent implements local quality by applying different color correction strategies to different regions of the 3D object based on their specific geometric characteristics. Regions with high risk of color interference (such as thin walls, intersecting surfaces, or areas with multiple color stacks) receive targeted correction, while other regions use standard coloring. This localized approach optimizes color uniformity where needed without unnecessarily complicating the entire printing process.

The patent transitions from two-dimensional color mapping to three-dimensional color correction by operating on voxels rather than surface pixels. The system considers the depth and volume of each color stack, analyzing how colors from different depths and angles interact. This dimensional extension allows the system to account for radiation exposure variations and color interference that are inherent to 3D geometry but invisible in 2D representations.

The patent applies parameter changes by modifying color values based on multiple factors including surface angle, position, thickness, and the presence of neighboring color stacks. The system dynamically adjusts color parameters (such as CMYK values) for each voxel based on its specific geometric context, rather than applying uniform color rules across the entire object. This adaptive parameter adjustment maintains printing process simplicity while achieving color uniformity.

The patent applies partial action by performing color correction calculations only on regions that require it, rather than uniformly processing the entire 3D model. The system identifies high-risk regions through geometric analysis (such as thin walls, sharp edges, or areas with overlapping color stacks) and applies detailed color correction only to these specific regions. Low-risk regions use simplified or no correction, reducing overall computational complexity while maintaining color uniformity where it matters most.

The patent implements segmentation by dividing the 3D model into distinct regions based on their color interference risk. The system segments the model into high-risk regions (requiring full color correction analysis), medium-risk regions (requiring partial correction), and low-risk regions (using standard coloring). This segmentation allows the computational workload to be distributed and optimized, reducing processing time while maintaining color uniformity in critical areas.