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X-LIC-LOCATION:Asia/Hong_Kong
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DTSTART:19911015T033000
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BEGIN:VEVENT
DTSTAMP:20251218T030656Z
LOCATION:Meeting Room S426+S427\, Level 4
DTSTART;TZID=Asia/Hong_Kong:20251215T145000
DTEND;TZID=Asia/Hong_Kong:20251215T150000
UID:siggraphasia_SIGGRAPH Asia 2025_sess110_papers_1270@linklings.com
SUMMARY:Scattering-Aware Color Calibration for 3D Printers Using a Simple 
 Calibration Target
DESCRIPTION:Tomáš Iser (Charles University, Additive Appearance); Tobias R
 ittig (Additive Appearance); and Alexander Wilkie (Charles University, Add
 itive Appearance)\n\nWe present a novel method for accurately calibrating 
 the optical properties of full-color 3D printers using only a single, dire
 ctly printable calibration target.\nOur approach is based on accurate mult
 iple-scattering light transport and estimates the single-scattering albedo
  and extinction coefficient for each resin.\nThese parameters are essentia
 l for both soft-proof rendering of 3D printouts and for advanced, scatteri
 ng-aware 3D halftoning algorithms.\nIn contrast to previous methods that r
 ely on thin, precisely fabricated resin samples and labor-intensive manual
  processing, our technique achieves higher accuracy with significantly les
 s effort.\nOur calibration target is specifically designed to enable algor
 ithmic recovery of each resin's optical properties through a series of one
 -dimensional and two-dimensional numerical optimizations, applied first on
  the white and black resins, and then on any remaining resins.\nThe method
  supports both RGB and spectral calibration, depending on whether a camera
  or spectrometer is used to capture the calibration target.\nIt also scale
 s linearly with the number of resins, making it well-suited for modern mul
 ti-material printers.\nWe validate our approach extensively, first on synt
 hetic and then on real resins across 242 color mixtures, printed thin tran
 slucent samples, printed surface textures, and fully textured 3D models wi
 th complex geometry, including an eye model and a figurine.\n\nRegistratio
 n Category: Full Access, Full Access Supporter\n\nSession Chair: Beibei Wa
 ng (Nanjing University)\n\n
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