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A Gradient-Based Framework for 3D Print Appearance Optimization

Thomas Nindel Tomáš Iser Tobias Rittig Alexander Wilkie Jaroslav Křivánek

Abstract

In full-color inkjet 3D printing, a key problem is determining the material configuration for the millions of voxels that a printed object is made of. The goal is a configuration that minimises the difference between desired target appearance and the result of the printing process. So far, the techniques used to find such a configuration have relied on domain-specific methods or heuristic optimization, which allowed only a limited level of control over the resulting appearance. We propose to use differentiable volume rendering in a continuous materialmixture space, which leads to a framework that can be used as a general tool for optimising inkjet 3D printouts. We demonstrate the technical feasibility of this approach, and use it to attain fine control over the fabricated appearance, and high levels of faithfulness to the specified target

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BibTex Citation

				
					@article{10.1145/3450626.3459844,
author = {Nindel, Thomas Klaus and Iser, Tom\'{a}\v{s} and Rittig, Tobias and Wilkie, Alexander and K\v{r}iv\'{a}nek, Jaroslav},
title = {A Gradient-Based Framework for 3D Print Appearance Optimization},
year = {2021},
issue_date = {August 2021},
publisher = {Association for Computing Machinery},
address = {New York, NY, USA},
volume = {40},
number = {4},
issn = {0730-0301},
url = {https://doi.org/10.1145/3450626.3459844},
doi = {10.1145/3450626.3459844},
abstract = {In full-color inkjet 3D printing, a key problem is determining the material configuration
for the millions of voxels that a printed object is made of. The goal is a configuration
that minimises the difference between desired target appearance and the result of
the printing process. So far, the techniques used to find such a configuration have
relied on domain-specific methods or heuristic optimization, which allowed only a
limited level of control over the resulting appearance.We propose to use differentiable
volume rendering in a continuous material-mixture space, which leads to a framework
that can be used as a general tool for optimising inkjet 3D printouts. We demonstrate
the technical feasibility of this approach, and use it to attain fine control over
the fabricated appearance, and high levels of faithfulness to the specified target.},
journal = {ACM Trans. Graph.},
month = jul,
articleno = {178},
numpages = {15},
keywords = {volumetric optimization, large-scale optimization, volumetric light transport, image metrics, computational fabrication, appearance reproduction, 3D printing}
}