An accurate illumination model for objects coated with multilayer films

Hasegawa, Hideki; Kaneda, Kazufumi; Yamashita, Hideo; Monden, Yoshimi

doi:10.1016/s0097-8493(01)00063-2

Cited by 36 publications

(17 citation statements)

References 16 publications

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“…There is also the possibility of inhomogeneous scattering layers-layers where the single-scattering albedo is a function of depth, which are solvable using known methods [Yanovitskij 1997a]. Flourescence [Wilkie et al 2006], anomalous dispersion [Weidlich and Wilkie 2009], and thin film interference effects [Hirayama et al 2001;Icart and Arquès 2000;Ershov et al 2001] have been considered in reflectance models and could be included as components in our framework but our foremost focus here is on a comprehensive geometrical optics framework.…”

Section: Prior Workmentioning

confidence: 99%

A comprehensive framework for rendering layered materials

Jakob

d’Eon²,

Jakob³

et al. 2014

ACM Trans. Graph.

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Slightly absorbing blue-green dielectric (η = 1.5) α = 0.05 α = 0.05 Textured diffuse layer Clear dielectric (η = 1.5) α = 0.05 Red anisotropic scattering diel. (η = 1.5, g=0.95) α = 0.1 α = 0.1 Purple anisotropic scattering diel. (η = 1.5, g=0.8) Thin blue absorbing dielectric (η = 1.5) α = 0.1 α = 0.1 Conductor (copper) Blue isotropic scattering dielectric (η = 1.5) α = 0.1 α = 0.1 Conductor (Aluminum) White isotropic scattering dielectric (η = 1.5) α = 0.04 α = 0.04 White isotropic scattering diel. half space (η = 1.5) α = 0.1 White isotropic scattering dielectric (η = 1.5) Measured BRDF (Blue metallic paint 2, [Matusik et al.]) α = 0.1 Measured BRDF (Blue metallic paint 2, [Matusik et al.])Conductor (chrome) α = 0.02 Figure 1: All materials in this interior scene were generated and rendered using the techniques described in this paper. The insets on the left and right reveal the corresponding structural descriptions that were used as inputs to our system. AbstractWe present a general and practical method for computing BSDFs of layered materials. Its ingredients are transport-theoretical models of isotropic or anisotropic scattering layers and smooth or rough boundaries of conductors and dielectrics. Following expansion into a directional basis that supports arbitrary composition, we are able to efficiently and accurately synthesize BSDFs for a great variety of layered structures.Reflectance models created by our system correctly account for multiple scattering within and between layers, and in the context of a rendering system they are efficient to evaluate and support texturing and exact importance sampling. Although our approach essentially involves tabulating reflectance functions in a Fourier basis, the generated models are compact to store due to the inherent sparsity of our representation, and are accurate even for narrowly peaked functions. While methods for rendering general layered surfaces have been investigated in the past, ours is the first system that supports arbitrary layer structures while remaining both efficient and accurate. We validate our model by comparing to measurements of real-world examples of layered materials, and we demonstrate an interactive visual design tool that enables easy exploration of the space of layered materials. We provide a fully practical, high-performance implementation in an open-source rendering system.

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Section: Prior Workmentioning

confidence: 99%

A comprehensive framework for rendering layered materials

Jakob

d’Eon²,

Jakob³

et al. 2014

ACM Trans. Graph.

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“…Multilayer Based Colouration for Coatings. Hirayama et al [46] proposed multilayer film based coatings for illumination models for objects. The film's primary reflection and refraction multilayer structure was used to coat smooth and rough surfaces by using multilayer film ray tracers (MFRT).…”

Section: Multilayer Based Colourationmentioning

confidence: 99%

“…The performance of such optical structure's designs is very much influenced by fabrication techniques. Due to the high cost of the fabrication process, computer simulation and mathematical modelling are popular approaches for initial investigations and designs for complex optical structures [46,48,55].…”

Section: Development Modellingmentioning

confidence: 99%

Nanostructural Colouration in Malaysian Plants: Lessons for Biomimetics and Biomaterials

Diah

Karman

Gebeshuber

2014

Journal of Nanomaterials

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Plant tissues include leaves, flower petals, and fruits. These can provide us with variety of design inspirations. Biomimetics allows us to learn from nature and transfer the knowledge we gain from studying sophisticated and amazing biological structures, materials and processes to engineering and the arts. The microstructures of morphology and anatomy of plant tissue have potential applications in technology through bioinspired design, which can mimic the properties found in nature or use them as inspiration for alternative applications. Many applications have been developed as a result of studying physical properties of plant tissues. Structural colours, for example, have been applied in the design of thin films both with regard to single or multilayer thin film interference, scattering, and diffraction gratings. Iridescent, metallic, or greyish colouration found naturally in plants is the result of physical structures or physical effects and not pigmentation. Phenotypical appearance of plants with structural colouration in tropical Malaysia is correlated with environmental parameters such as location (shady understory rainforest, sunny conditions) and altitude (highlands, lowlands). Various examples of bioinspired technical innovations with structural colours highlight the importance of inspiration by structural colours in living nature.

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“…al. [13,14] used the physics-based interference model of multi-layered film, and rendered eyeglasses and mother-of-pearl. Modeling the microstructure of CDs, Sun et.…”

Section: Related Workmentioning

confidence: 99%