An appearance-driven space to create new BRDFs

Nunes, Mislene da Silva; Miranda, Gastão Florêncio; Andrade, Beatriz Trinchão

doi:10.1016/j.cag.2021.08.008

Cited by 2 publications

(5 citation statements)

References 25 publications

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“…The MDS and ISOMAP dimensionality reduction methods were compared in our pipeline. Please refer to Nunes et al [1] for a comprehensive comparison of the results. Figures 3 and 4 show examples of renderings of materials created using our pipeline.…”

Section: A Resultsmentioning

confidence: 99%

“…This section presents our pipeline to create new materials from a tabular BRDF database [1]. In addition to that database, the pipeline receives as input a set of indexes of materials belonging to that database, selected by the user according to appearance of the desired material.…”

Section: An Appearance-driven Space To Create New Brdfsmentioning

confidence: 99%

“…Vector n means the surface normal vector and h the halfway vector between ω i and ωo. Figure extracted from Nunes et al [1] A BRDF can be directly estimated from a real-world material through device and image-based methods, which sample reflectance data and store them in a tabular format. This approach is precise but requires high storage space and a long time of measurement acquisition [2]- [5].…”

Section: Introductionmentioning

confidence: 99%

“…Section II introduces related works on creating new materials from a tabular BRDF database, our primary goal. Sections III, IV, and V present an overview of the three main contributions of this master dissertation: an appearance-driven space to create new BRDFs [1], techniques for BRDF evaluation [23], and an approach to preprocess and cluster a BRDF database [24]. The reader is encouraged to refer to each referenced paper for more details.…”

Section: Introductionmentioning

confidence: 99%

“…Each different color represent a specific simplex in the appearance-driven space, in which the material belongs to. Figure extracted from Nunes et al[1],[22].…”

mentioning

confidence: 99%

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Creation of Materials from Tabular BRDFs

Nunes¹,

Miranda²,

Andrade³

2022

Anais Estendidos Do XXXV Conference on Graphics, Patterns and Images (SIBGRAPI Estendido 2022)

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Rendering materials with a realistic appearance requires considering how they interact with the light. Bidirectional Reflectance Distribution Functions (BRDFs) are often used to achieve this goal. There are different ways to represent materials from BRDFs, which include tabular BRDFs, analytical models, and linear combinations of a BRDF database. In the last decade, the search for more realism in rendering increased the interest in using tabular BRDFs. However, this approach requires a long acquisition process and high storage space. This master dissertation proposes a pipeline to create new materials from a tabular BRDF database. During this process, we also explored two related topics: we compiled and proposed techniques to evaluate BRDFs, and developed an approach to preprocess and cluster a BRDF database. These researches presented insights and contributions that are useful for contexts other than ours and provided analysis that reinforced our choice of techniques to reach our goal. As a final result, our method creates new materials with realism and consistency.

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Section: A Resultsmentioning

confidence: 99%

Section: An Appearance-driven Space To Create New Brdfsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Each different color represent a specific simplex in the appearance-driven space, in which the material belongs to. Figure extracted from Nunes et al[1],[22].…”

mentioning

confidence: 99%

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