A Combined Scattering and Diffraction Model for Elliptical Hair Rendering

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dc.contributor.authorBenamira, Alexisen_US
dc.contributor.authorPattanaik, Sumantaen_US
dc.contributor.editorBousseau, Adrien and McGuire, Morganen_US
dc.date.accessioned2021-07-12T12:09:16Z
dc.date.available2021-07-12T12:09:16Z
dc.date.issued2021
dc.description.abstractRealistic hair rendering relies on fiber scattering models. These models are based on either ray tracing or on full wavepropagation through the hair fiber. Ray tracing can model most of the scattering phenomenon observed but misses the important effect of diffraction. Indeed human natural hair specific dimensions and geometry demands for the wave nature of light to be taken into consideration for accurate rendering. However, current full-wave model requires nonpratical, several days precomputation, that needs to be repeated for every change in the hair geometry or color, for appropriate results. We present in this paper a dual hair scattering model which considers the dual aspect of light: as a wave and as a ray. Our model accurately simulates both diffraction and scattering phenomena without requiring any precomputation. Furthermore, it can simulate light transport in hairs of arbitrary elliptical cross-sections. This new dual approach enables our model to significantly improve the appearance of rendered hair and qualitatively match scattering and diffraction effects seen in photos of real hair while adding little computation overhead.en_US
dc.description.number4
dc.description.sectionheadersMaterial Models
dc.description.seriesinformationComputer Graphics Forum
dc.description.volume40
dc.identifier.doi10.1111/cgf.14349
dc.identifier.issn1467-8659
dc.identifier.pages163-175
dc.identifier.urihttps://doi.org/10.1111/cgf.14349
dc.identifier.urihttps://diglib.eg.org:443/handle/10.1111/cgf14349
dc.publisherThe Eurographics Association and John Wiley & Sons Ltd.en_US
dc.subjectComputing methodologies
dc.subjectReflectance modeling
dc.titleA Combined Scattering and Diffraction Model for Elliptical Hair Renderingen_US
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