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Jaroslav Køivánek |
Geometry-Aware Scattering Compensation for 3D Printing
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Denis Sumin*
Max Planck Institut fur Informatik |
Tobias Rittig*
Charles University, Prague |
Vahid Babaei
Max Planck Institut fur Informatik |
Thomas Nindel
Charles University, Prague |
Alexander Wilkie
Charles University, Prague |
|
Piotr Didyk
Universita della Svizzera italiana |
Bernd Bickel
Institute of Science and Technology Austria |
Jaroslav Køivánek
Charles University, Prague |
Karol Myszkowski
Max Planck Institut fur Informatik |
Tim Weyrich
University College London |
* Denis Sumin and Tobias Rittig share the first authorship of this work.
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A demonstration of 3D printouts obtained with our method. The Earth diameter is 5 cm.
Abstract
Commercially available full-color 3D printing allows for detailed control of material deposition in
a volume, but an exact reproduction of a target surface appearance is hampered by the strong
subsurface scattering that causes nontrivial volumetric cross-talk at the print surface. Previous
work showed how an iterative optimization scheme based on accumulating absorptive materials at the
surface can be used to find a volumetric distribution of print materials that closely approximates
a given target appearance.
In this work, we first revisit the assumption that pushing the absorptive materials to the surface
results in minimal volumetric cross-talk. We design a full-fledged optimization on a small domain
for this task and confirm this previously reported heuristic. Then, we extend the above approach
that is critically limited to color reproduction on planar surfaces, to arbitrary 3D shapes. Our
method enables high-fidelity color texture reproduction on 3D prints by effectively
compensating for internal light scattering within arbitrarily shaped objects. In addition, we
propose a content-aware gamut mapping that significantly improves color reproduction for the
pathological case of thin geometric features. Using a wide range of sample objects with complex
textures and geometries, we demonstrate color reproduction whose fidelity is superior to
state-of-the-art drivers for color 3D printers.
Reference
Denis Sumin,
Tobias Rittig,
Vahid Babaei,
Thomas Nindel,
Alexander Wilkie,
Piotr Didyk,
Bernd Bickel,
Jaroslav Køivánek,
Karol Myszkowski,
Tim Weyrich.
Geometry-Aware Scattering Compensation for 3D Printing. ACM Trans. Graph. (Proc. SIGGRAPH), 2019
DOI | BibTeX
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Acknowledgments
We thank Donald Degraen for helping with the post-processing of the printouts, Philipp Urban for advice on our evaluation, Sketchfab users William Zarek (Octo Star), laurashea (Red Vase) and CMPLab (Yellow Vase) for the models and the reviewers for their valuable feedback. This project has received funding from the European Union's Horizon 2020 research and innovation programme, under the Marie Sklodowska-Curie grant agreement No 642841 (DISTRO), and under the European Research Council grant agreement No 715767 (MATERIALIZABLE). It was further supported by the Czech Science Foundation grants 16-18964S, 16-08111S and 19-07626S.