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Empirical BRDF mode...
Empirical BRDF model for goniochromatic materials and soft proofing with reflective inks.
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- Pranovich, Alina, 1993- (författare)
- Linköpings universitet,Medie- och Informationsteknik,Tekniska fakulteten
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- Frisvad, Jeppe Revall (författare)
- Technical University of Denmark, Kongens Lyngby, Denmark
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- Valyukh, Sergiy, 1971- (författare)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- Gooran, Sasan, 1965- (författare)
- Linköpings universitet,Medie- och Informationsteknik,Tekniska fakulteten
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- Nyström, Daniel, 1974- (författare)
- Linköpings universitet,Medie- och Informationsteknik,Tekniska fakulteten
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(creator_code:org_t)
- 2024
- 2024
- Engelska.
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Ingår i: IEEE Computer Graphics and Applications. - 0272-1716 .- 1558-1756.
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The commonly used analytic bidirectional reflectance distribution functions (BRDFs) do not model goniochromatism, that is, angle-dependent material color. The material color is usually defined by a diffuse reflectance spectrum or RGB vector and a specular part based on a spectral complex index of refraction. Extension of the commonly used BRDFs based on wave theory can help model goniochromatism, but this comes at the cost of significant added model complexity. We measured the goniochromatism of structual color pigments used for additive color printing and found that we can fit the observed spectral angular dependence of the bidirectional reflectance using a simple modification of the standard microfacet BRDF model. All we need to describe the goniochromatism is an empirically-based spectral parameter, which we use in our model together with a specular reflectance spectrum instead of the spectral complex index of refraction. We demonstrate the ability of our model to fit the measured reflectance of red, green, and blue commercial structural color pigments. Our BRDF model enables straightforward implementation of a shader for interactive preview of 3D objects with printed spatially and angularly varying texture.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Annan teknik -- Mediateknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies -- Media Engineering (hsv//eng)
Nyckelord
- Printing
- Pigments
- Color
- Ink
- Image color analysis
- Surface treatment
- Optical surface waves
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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