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Modelling appearanc...
Modelling appearance printing : Acquisition and digital reproduction of translucent and goniochromatic materials
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- Pranovich, Alina, 1993- (författare)
- Linköpings universitet,Medie- och Informationsteknik,Tekniska fakulteten
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- Nyström, Daniel, Associate Professor, 1974- (preses)
- Linköpings universitet,Medie- och Informationsteknik,Tekniska fakulteten
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- Gooran, Sasan, Associate Professor, 1965- (preses)
- Linköpings universitet,Medie- och Informationsteknik,Tekniska fakulteten
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- Frisvad, Jeppe Revall, Associate Professor (preses)
- Department of Applied Mathematics and Computer Science Visual Computing, Technical University of Denmark (DTU), Kongens Lyngby, Denmark
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- Valyukh, Sergiy, Associate Professor, 1971- (preses)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- Nussbaum, Peter Stefan, Associate Professor (opponent)
- Department of Computer Science, Norwegian University of Science and Technology, Gjøvik, Norway
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(creator_code:org_t)
- ISBN 9789180755566
- Linköping : Linköping University Electronic Press, 2024
- Engelska 66 s.
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Serie: Linköping Studies in Science and Technology. Dissertations, 0345-7524 ; 2379
- Relaterad länk:
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https://doi.org/10.3...
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https://liu.diva-por... (primary) (Raw object)
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https://liu.diva-por... (Preview)
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Ämnesord
Stäng
- Colour perception is fundamental to our everyday experiences, allowing us to communicate and interpret visual information effectively. Yet, replicating these experiences accurately poses a significant challenge, particularly in the context of full-colour 3D printing. Advances in this field have revolutionised the fabrication of customised prosthetic body parts, such as eyes, teeth, and skin features, with profound implications for medical and aesthetic applications.The key to successful 3D printing lies in the digital preview of objects before fabrication, enabling users to assess colour reproduction and quality. However, accurately representing colour in a digital environment is complex, as it depends on numerous factors, including illumination, object shape, surface properties, scene context, and observer characteristics. Traditional methods of previewing conventional 2D prints overlook this complexity.This thesis addresses this challenge by focusing on two types of materials: semitransparent polymers commonly used in 3D printing, and goniochromatic colorants employed in printing to introduce unique effects unattainable with conventional inks for 2D printing. For semitransparent materials, we developed an empirical function to represent colour based on sample thickness, enabling efficient digital representation. Additionally, we adapted a colour measuring device to identify two key material parameters, absorption and scattering coefficients, essential for accurate colour reproduction.Goniochromatic materials, such as thin film-coated mica particles, are slightly more complicated and less predictive in terms of their final colour appearance. Although not yet used in 3D printing, these particles used in conventional printing introduce colour variation while rotating the print. We found that goniochromatic properties can be expressed with an empirically found function after collecting angle-dependent light reflecting properties of the sample. We used this function and showed how prints with goniochromatic materials can be efficiently previewed on a computer monitor.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Annan teknik -- Mediateknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies -- Media Engineering (hsv//eng)
Nyckelord
- Material appearance
- 3D printing
- Goniochromatism
- Translucency
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