A Surface-based Appearance Model for Pennaceous Feathers

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dc.contributor.authorPadrón-Griffe, Juan Raúlen_US
dc.contributor.authorLanza, Darioen_US
dc.contributor.authorJarabo, Adrianen_US
dc.contributor.authorMuñoz, Adolfoen_US
dc.contributor.editorChen, Renjieen_US
dc.contributor.editorRitschel, Tobiasen_US
dc.contributor.editorWhiting, Emilyen_US
dc.date.accessioned2024-10-13T18:08:49Z
dc.date.available2024-10-13T18:08:49Z
dc.date.issued2024
dc.description.abstractThe appearance of a real-world feather results from the complex interaction of light with its multi-scale biological structure, including the central shaft, branching barbs, and interlocking barbules on those barbs. In this work, we propose a practical surface-based appearance model for feathers. We represent the far-field appearance of feathers using a BSDF that implicitly represents the light scattering from the main biological structures of a feather, such as the shaft, barb and barbules. Our model accounts for the particular characteristics of feather barbs such as the non-cylindrical cross-sections and the scattering media via a numerically-based BCSDF. To model the relative visibility between barbs and barbules, we derive a masking term for the differential projected areas of the different components of the feather's microgeometry, which allows us to analytically compute the masking between barbs and barbules. As opposed to previous works, our model uses a lightweight representation of the geometry based on a 2D texture, and does not require explicitly representing the barbs as curves. We show the flexibility and potential of our appearance model approach to represent the most important visual features of several pennaceous feathers.en_US
dc.description.number7
dc.description.sectionheadersRendering and Lighting II
dc.description.seriesinformationComputer Graphics Forum
dc.description.volume43
dc.identifier.doi10.1111/cgf.15235
dc.identifier.issn1467-8659
dc.identifier.pages13 pages
dc.identifier.urihttps://doi.org/10.1111/cgf.15235
dc.identifier.urihttps://diglib.eg.org/handle/10.1111/cgf15235
dc.publisherThe Eurographics Association and John Wiley & Sons Ltd.en_US
dc.rightsAttribution 4.0 International License
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/
dc.subjectCCS Concepts: Computing methodologies → Reflectance Modeling
dc.subjectComputing methodologies → Reflectance Modeling
dc.titleA Surface-based Appearance Model for Pennaceous Feathersen_US
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