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DTSTAMP:20260114T163632Z
LOCATION:Darling Harbour Theatre\, Level 2 (Convention Centre)
DTSTART;TZID=Australia/Melbourne:20231212T093000
DTEND;TZID=Australia/Melbourne:20231212T124500
UID:siggraphasia_SIGGRAPH Asia 2023_sess209_papers_296@linklings.com
SUMMARY:Doppler Time-of-Flight Rendering
DESCRIPTION:Juhyeon Kim and Wojciech Jarosz (Dartmouth College), Ioannis G
 kioulekas (Carnegie Mellon University), and Adithya Pediredla (Dartmouth C
 ollege)\n\nWe introduce Doppler time-of-flight (D-ToF) rendering, an exten
 sion of ToF rendering for dynamic scenes, with applications in simulating 
 D-ToF cameras. D-ToF cameras use high-frequency modulation for illuminatio
 n and exposure, and measure the Doppler frequency shift to compute the vel
 ocity of dynamic objects. The time-varying scene geometry and high-frequen
 cy modulation functions used in such cameras make it challenging to accura
 tely and efficiently simulate their measurements with existing ToF renderi
 ng algorithms. We overcome these challenges in a twofold manner: To achiev
 e accuracy, we derive path integral expressions for D-ToF measurements und
 er global illumination and compute these integrals with unbiased Monte Car
 lo estimates. To achieve efficiency, we develop a tailored time-path sampl
 ing technique that combines antithetic time sampling with correlated path 
 sampling. We demonstrate experimentally that our sampling technique achiev
 es ×100 acceleration compared to naive time-path sampling across different
  D-ToF camera models. We provide an open-source simulator that serves as a
  digital twin for D-ToF imaging systems, allowing imaging researchers, for
  the first time, to investigate the impact of various modulation functions
 , material properties, and global illumination on D-ToF imaging performanc
 e.\n\nRegistration Category: Full Access, Enhanced Access, Trade Exhibitor
 , Experience Hall Exhibitor\n\n
URL:https://asia.siggraph.org/2023/full-program?id=papers_296&sess=sess209
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