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:20230103T035312Z LOCATION:Room 324\, Level 3\, West Wing DTSTART;TZID=Asia/Seoul:20221209T103000 DTEND;TZID=Asia/Seoul:20221209T120000 UID:siggraphasia_SIGGRAPH Asia 2022_sess173_papers_208@linklings.com SUMMARY:Unbiased Caustics Rendering Guided by Representative Specular Path s DESCRIPTION:Technical Communications, Technical Papers\n\nUnbiased Caustic s Rendering Guided by Representative Specular Paths\n\nLi, Wang, Tu, Xu, H olzschuch...\n\nCaustics are interesting patterns caused by the light bein g focused when reflecting off glossy materials. Rendering them in Computer Graphics is still challenging: they correspond to high luminous intensity focused over a small area. Finding the paths that contribute to this smal l area is difficult, and even more difficult when using camera-based path tracing instead of bidirectional approaches. Recent improvements in path g uiding are still unable to compute efficiently the light paths that contri bute to a caustic. In this paper, we present a novel path guiding approach to enable reliable rendering of caustics. Our approach relies on computin g representative specular paths, then extending them using a chain of sphe rical Gaussians. We use these extended paths to estimate the incident radi ance distribution and guide path tracing. We combine this approach with se veral practical strategies, such as spatial reusing and parallax-aware rep resentation for arbitrarily curved reflectors. Our path-guided algorithm u sing extended specular paths outperforms current state-of-the-art methods and handles multiple bounces of light and a variety of scenes.\n\nRegistra tion Category: FULL ACCESS, ON-DEMAND ACCESS\n\nLanguage: ENGLISH\n\nForma t: IN-PERSON, ON-DEMAND URL:https://sa2022.siggraph.org/en/full-program/?id=papers_208&sess=sess17 3 END:VEVENT END:VCALENDAR