BEGIN:VCALENDAR VERSION:2.0 PRODID:Linklings LLC BEGIN:VTIMEZONE TZID:Asia/Seoul X-LIC-LOCATION:Asia/Seoul BEGIN:STANDARD TZOFFSETFROM:+0900 TZOFFSETTO:+0900 TZNAME:KST DTSTART:18871231T000000 DTSTART:19881009T020000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20230103T035307Z LOCATION:Auditorium\, Level 5\, West Wing DTSTART;TZID=Asia/Seoul:20221206T100000 DTEND;TZID=Asia/Seoul:20221206T120000 UID:siggraphasia_SIGGRAPH Asia 2022_sess153_papers_208@linklings.com SUMMARY:Unbiased Caustics Rendering Guided by Representative Specular Path s DESCRIPTION:Technical Papers\n\nUnbiased Caustics Rendering Guided by Repr esentative Specular Paths\n\nLi, Wang, Tu, Xu, Holzschuch...\n\nCaustics a re interesting patterns caused by the light being focused when reflecting off glossy materials. Rendering them in Computer Graphics is still challen ging: they correspond to high luminous intensity focused over a small area . Finding the paths that contribute to this small area is difficult, and e ven more difficult when using camera-based path tracing instead of bidirec tional approaches. Recent improvements in path guiding are still unable to compute efficiently the light paths that contribute to a caustic. In this paper, we present a novel path guiding approach to enable reliable render ing of caustics. Our approach relies on computing representative specular paths, then extending them using a chain of spherical Gaussians. We use th ese extended paths to estimate the incident radiance distribution and guid e path tracing. We combine this approach with several practical strategies , such as spatial reusing and parallax-aware representation for arbitraril y curved reflectors. Our path-guided algorithm using extended specular pat hs outperforms current state-of-the-art methods and handles multiple bounc es of light and a variety of scenes.\n\nRegistration Category: FULL ACCESS , EXPERIENCE PLUS ACCESS, EXPERIENCE ACCESS, TRADE EXHIBITOR\n\nLanguage: ENGLISH\n\nFormat: IN-PERSON URL:https://sa2022.siggraph.org/en/full-program/?id=papers_208&sess=sess15 3 END:VEVENT END:VCALENDAR