VarIS: Variable Illumination Sphere for Facial Capture, Model Scanning, and Spatially Varying Appearance Acquisition

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dc.contributor.authorBaron, Jessicaen_US
dc.contributor.authorLi, Xiangen_US
dc.contributor.authorJoshi, Parishaen_US
dc.contributor.authorItty, Nathanielen_US
dc.contributor.authorGreene, Sarahen_US
dc.contributor.authorDhillon, Daljit Singh J.en_US
dc.contributor.authorPatterson, Ericen_US
dc.contributor.editorBanterle, Francescoen_US
dc.contributor.editorCaggianese, Giuseppeen_US
dc.contributor.editorCapece, Nicolaen_US
dc.contributor.editorErra, Ugoen_US
dc.contributor.editorLupinetti, Katiaen_US
dc.contributor.editorManfredi, Gildaen_US
dc.date.accessioned2023-11-12T15:37:35Z
dc.date.available2023-11-12T15:37:35Z
dc.date.issued2023
dc.description.abstractWe introduce VarIS, our Variable Illumination Sphere – a multi-purpose system for acquiring and processing real-world geometric and appearance data for computer-graphics research and production. Its key applications among many are (1) human-face capture, (2) model scanning, and (3) spatially varying material acquisition. Facial capture requires high-resolution cameras at multiple viewpoints, photometric capabilities, and a swift process due to human movement. Acquiring a digital version of a physical model is somewhat similar but with different constraints for image processing and more allowable time. Each requires detailed estimations of geometry and physically based shading properties. Measuring spatially varying light-scattering properties requires spanning four dimensions of illumination and viewpoint with angular, spatial, and spectral accuracy, and this process can also be assisted using multiple, simultaneous viewpoints or rapid switching of lights with no movement necessary. VarIS is a system of hardware and software for spherical illumination and imaging that has been custom designed and developed by our team. It has been inspired by Light Stages and goniophotometers, but costs less through use of primarily off-the-shelf components, and additionally extends capabilities beyond these devices. In this paper we describe the unique system and contributions, including practical details that could assist other researchers and practitioners.en_US
dc.description.sectionheadersXR Experiences Design
dc.description.seriesinformationSmart Tools and Applications in Graphics - Eurographics Italian Chapter Conference
dc.identifier.doi10.2312/stag.20231292
dc.identifier.isbn978-3-03868-235-6
dc.identifier.issn2617-4855
dc.identifier.pages23-35
dc.identifier.pages13 pages
dc.identifier.urihttps://doi.org/10.2312/stag.20231292
dc.identifier.urihttps://diglib.eg.org:443/handle/10.2312/stag20231292
dc.publisherThe Eurographics Associationen_US
dc.rightsAttribution 4.0 International License
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectCCS Concepts: Computing methodologies -> Reflectance modeling; 3D imaging; Hardware -> Emerging optical and photonic technologies; Applied computing -> Media arts; Keywords: Facial Capture, Photogrammetry, Material Acquisition, Appearance Capture
dc.subjectComputing methodologies
dc.subjectReflectance modeling
dc.subject3D imaging
dc.subjectHardware
dc.subjectEmerging optical and photonic technologies
dc.subjectApplied computing
dc.subjectMedia arts
dc.subjectKeywords
dc.subjectFacial Capture
dc.subjectPhotogrammetry
dc.subjectMaterial Acquisition
dc.subjectAppearance Capture
dc.titleVarIS: Variable Illumination Sphere for Facial Capture, Model Scanning, and Spatially Varying Appearance Acquisitionen_US
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