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DTSTART:19911015T033000
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BEGIN:VEVENT
DTSTAMP:20251218T030656Z
LOCATION:Meeting Room S421\, Level 4
DTSTART;TZID=Asia/Hong_Kong:20251217T105100
DTEND;TZID=Asia/Hong_Kong:20251217T110200
UID:siggraphasia_SIGGRAPH Asia 2025_sess132_papers_1082@linklings.com
SUMMARY:Designing and Fabricating Color BRDFs with Differentiable Wave Opt
 ics
DESCRIPTION:Yixin Zeng (Zhejiang University), Kiseok Choi (Korea Advanced 
 Institute of Science and Technology (KAIST)), Hadi Amata (King Abdullah Un
 iversity of Science and Technology (KAUST)), Kaizhang Kang (Zhejiang Unive
 rsity), Wolfgang Heidrich (King Abdullah University of Science and Technol
 ogy (KAUST)), Hongzhi Wu (Zhejiang University), and Min H. Kim (Korea Adva
 nced Institute of Science and Technology (KAIST))\n\nModeling surface refl
 ectance is central to connecting optical theory with real-world rendering 
 and fabrication. While analytic BRDFs remain standard in rendering, recent
  advances in geometric and wave optics have expanded the design space for 
 complex reflectance effects. However, existing wave-optics-based methods a
 re limited to controlling reflectance intensity only, lacking the ability 
 to design full-spectrum, color-dependent BRDFs. In this work, we present t
 he first method for designing and fabricating color BRDFs using a fully di
 fferentiable wave optics framework. Our differentiable and memory-efficien
 t simulation framework supports end-to-end optimization of microstructured
  surfaces under scalar diffraction theory, enabling joint control over bot
 h angular intensity and spectral color of reflectance. We leverage graysca
 le lithography with a feature size of 1.5--2.0 𝜇m to fabricate 15 BRDFs sp
 anning four representative categories: anti-mirrors, pictorial reflections
 , structural colors, and iridescences. Compared to prior work, our approac
 h achieves significantly higher fidelity and broader design flexibility, p
 roducing physically accurate and visually compelling results. By providing
  a practical and extensible solution for full-color BRDF design and fabric
 ation, our method opens up new opportunities in structural coloration, pro
 duct design, security printing, and advanced manufacturing.\n\nRegistratio
 n Category: Full Access, Full Access Supporter\n\nSession Chair: David Hah
 n (Vienna University of Technology)\n\n
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