Natural Lighting and Medieval Glass – Scientific Data Acquisition, Methodology and Physically Based Rendering

Cerise, Remi; Graça, Fernando da; Magoulès, Frédéric; Callet, Patrick Le

doi:10.1007/978-3-642-34234-9_66

Cited by 7 publications

(3 citation statements)

References 5 publications

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“…A model of light transmission through medieval stained glass has been developed based on ellipsiometric measurements on samples of different kinds of glass comprising the windows Cerise et al (2012). To acquire the scattering properties of an entire window in the the cathedral of Lausanne (Switzerland) in situ, the spatially varying transmission properties of the stained glass were reconstructed by combining images under varying, natural illumination with a dictionary of laboratory measurements on comparable samples.…”

Section: Transparency and Translucency In Case Studies That Reconstru...mentioning

confidence: 99%

Data-Driven Modelling of Daylight Scattering by Roman Window Glass

Grobe

Noback

Lang

2020

J. Comput. Cult. Herit.

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With the advent of window glass, its optical properties arise as one important factor in the illumination, and thereby the visual perception, of Roman architecture. Computational simulation allows to reconstruct the daylight illumination of buildings with known geometrical configuration if the scattering properties of window glass can be replicated. We describe a method to generate data-driven models of Roman window glass based on precise gonio-photometric measurements of archaeological finds. The method is employed to model four exemplary glass finds in the context of a simplified architectural scene, demonstrating the potential to support research in building history and archaeology focused on building techniques, lighting concepts, and perception with accurate and reliable photometric data.

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Section: Transparency and Translucency In Case Studies That Reconstru...mentioning

confidence: 99%

Data-Driven Modelling of Daylight Scattering by Roman Window Glass

Grobe

Noback

Lang

2020

J. Comput. Cult. Herit.

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“…Then, by respecting a rigorous colorimetric protocol, we select appropriate modern glass materials which are visually close to the ancient one. More details can be found in [7].…”

Section: Data Acquisitionmentioning

confidence: 99%

Spectral Domain Decomposition Method for Natural Lighting and Medieval Glass Rendering

Gbikpi-Benissan,

Cerise,

Callet

et al. 2019

Preprint

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In this paper, we use an original ray-tracing domain decomposition method to address image rendering of naturally lighted scenes. This new method allows to particularly analyze rendering problems on parallel architectures, in the case of interactions between light-rays and glass material. Numerical experiments, for medieval glass rendering within the church of the Royaumont abbey, illustrate the performance of the proposed ray-tracing domain decomposition method (DDM) on multi-cores and multiprocessors architectures. On one hand, applying domain decomposition techniques increases speedups obtained by parallelizing the computation. On the other hand, for a fixed number of parallel processes, we notice that speedups increase as the number of sub-domains do.

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“…This map is accessed by texture coordinates mechanism, and is very accurate for simulating realistic visual appearance when a large number of points are selected for the measurements. More details can be found in [5].…”

Section: Physically-based Renderingmentioning

confidence: 99%

Spectral Domain Decomposition Method for Physically-Based Rendering of Royaumont Abbey

Gbikpi-Benissan

Callet

Magoulès

2016

2016 IEEE Intl Conference on Computational Science and Engineering (CSE) and IEEE Intl Conference on Embedded and Ubiquitous Co

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In the context of a virtual reconstitution of the destroyed Royaumont abbey church, this paper investigates computer sciences issues intrinsic to the physically-based image rendering. First, a virtual model was designed from historical sources and archaeological descriptions. Then some materials physical properties were measured on remains of the church and on pieces from similar ancient churches. We specify the properties of our lighting source which is a representation of the sun, and present the rendering algorithm implemented in our software Virtuelium. In order to accelerate the computation of the interactions between light-rays and objects, this ray-tracing algorithm is parallelized by means of domain decomposition techniques. Numerical experiments show that the computational time saved by a classic parallelization is much less significant than that gained with our approach.

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Natural Lighting and Medieval Glass – Scientific Data Acquisition, Methodology and Physically Based Rendering

Cited by 7 publications

References 5 publications

Data-Driven Modelling of Daylight Scattering by Roman Window Glass

Data-Driven Modelling of Daylight Scattering by Roman Window Glass

Spectral Domain Decomposition Method for Natural Lighting and Medieval Glass Rendering

Spectral Domain Decomposition Method for Physically-Based Rendering of Royaumont Abbey

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