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BEGIN:VEVENT
DTSTAMP:20250110T023312Z
LOCATION:Hall B5 (2)\, B Block\, Level 5
DTSTART;TZID=Asia/Tokyo:20241205T132300
DTEND;TZID=Asia/Tokyo:20241205T133400
UID:siggraphasia_SIGGRAPH Asia 2024_sess131_papers_495@linklings.com
SUMMARY:DARTS: Diffusion Approximated Residual Time Sampling for Time-of-f
 light Rendering in Homogeneous Scattering Media
DESCRIPTION:Technical Papers\n\nQianyue He, Dongyu Du, Haitian Jiang, and 
 Xin Jin (Tsinghua Shenzhen International Graduate School)\n\nTime-of-fligh
 t (ToF) devices have greatly propelled the advancement of various multi-mo
 dal perception applications. However, achieving accurate rendering of time
 -resolved information remains a challenge, particularly in scenes involvin
 g complex geometries, diverse materials and participating media. Existing 
 ToF rendering works have demonstrated notable results, yet they struggle w
 ith scenes involving scattering media and camera-warped settings. Other st
 eady-state volumetric rendering methods exhibit significant bias or varian
 ce when directly applied to ToF rendering tasks. To address these challeng
 es, we integrate transient diffusion theory into path construction and pro
 pose novel sampling methods for free-path distance and scattering directio
 n, via resampled importance sampling and offline tabulation. An elliptical
  sampling method is further adapted to provide controllable vertex connect
 ion satisfying any required photon traversal time. In contrast to the exis
 ting temporal uniform sampling strategy, our method is the first to consid
 er the contribution of transient radiance to importance-sample the full pa
 th, and thus enables improved temporal path construction under multiple sc
 attering settings. The proposed method can be integrated into both path tr
 acing and photon-based frameworks, delivering significant improvements in 
 quality and efficiency with at least a 5x MSE reduction versus SOTA method
 s in equal rendering time.\n\nRegistration Category: Full Access, Full Acc
 ess Supporter\n\nLanguage Format: English Language\n\nSession Chair: Seung
 yong Lee (POSTECH)
URL:https://asia.siggraph.org/2024/program/?id=papers_495&sess=sess131
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