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DTSTAMP:20260817T171530Z
LOCATION:Hall B5 (2)\, B Block\, Level 5
DTSTART;TZID=Asia/Tokyo:20241206T132300
DTEND;TZID=Asia/Tokyo:20241206T133400
UID:siggraphasia_SIGGRAPH Asia 2024_sess146_papers_203@linklings.com
SUMMARY:Polarimetric BSSRDF Acquisition of Dynamic Faces
DESCRIPTION:Hyunho Ha and Inseung Hwang (Korea Advanced Institute of Scien
 ce and Technology (KAIST)), Nestor Monzon (Universidad de Zaragoza - I3A),
  Jaemin Cho and Donggun Kim (Korea Advanced Institute of Science and Techn
 ology (KAIST)), Seung-Hwan Baek (POSTECH), Adolfo Muñoz and Diego Gutierre
 z (Universidad de Zaragoza - I3A), and Min H. Kim (Korea Advanced Institut
 e of Science and Technology (KAIST))\n\nAcquisition and modeling of polari
 zed light reflection and scattering help reveal the shape, structure, and 
 physical characteristics of an object, which is increasingly important in 
 computer graphics. However, current polarimetric acquisition systems are l
 imited to static and opaque objects. Human faces, on the other hand, prese
 nt a particularly difficult challenge, given their complex structure and r
 eflectance properties, the strong presence of spatially-varying subsurface
  scattering, and their dynamic nature. We present a new polarimetric acqui
 sition method for dynamic human faces, which focuses on capturing spatiall
 y varying appearance and precise geometry, across a wide spectrum of skin 
 tones and facial expressions. It includes both single and heterogeneous su
 bsurface scattering, index of refraction, and specular roughness and inten
 sity, among other parameters, while revealing biophysically-based componen
 ts such as inner- and outer-layer hemoglobin, eumelanin and pheomelanin. O
 ur method leverages such components' unique multispectral absorption profi
 les to quantify their concentrations, which in turn inform our model about
  the complex interactions occurring within the skin layers. To our knowled
 ge, our work is the first to simultaneously acquire polarimetric and spect
 ral reflectance information alongside biophysically-based skin parameters 
 and geometry of dynamic human faces. Moreover, our polarimetric skin model
  integrates seamlessly into various rendering pipelines.\n\nRegistration C
 ategory: Full Access, Full Access Supporter\n\nLanguage Format: English La
 nguage\n\nSession Chair: Valentin Deschaintre (Adobe Research)\n\n
URL:https://asia.siggraph.org/2024/program/?id=papers_203&sess=sess146
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