BEGIN:VCALENDAR VERSION:2.0 PRODID:Linklings LLC BEGIN:VTIMEZONE TZID:Asia/Tokyo X-LIC-LOCATION:Asia/Tokyo BEGIN:STANDARD TZOFFSETFROM:+0900 TZOFFSETTO:+0900 TZNAME:JST DTSTART:18871231T000000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20250110T023312Z LOCATION:Hall B5 (1)\, B Block\, Level 5 DTSTART;TZID=Asia/Tokyo:20241205T133400 DTEND;TZID=Asia/Tokyo:20241205T134600 UID:siggraphasia_SIGGRAPH Asia 2024_sess130_papers_540@linklings.com SUMMARY:Direct Manipulation of Procedural Implicit Surfaces DESCRIPTION:Technical Papers\n\nMarzia Riso (Sapienza University of Rome, Adobe); Élie Michel, Axel Paris, Valentin Deschaintre, and Mathieu Gaillar d (Adobe); and Fabio Pellacini (University of Modena and Reggio Emilia)\n\ nProcedural implicit surfaces are a popular representation for shape model ing. They provide a simple framework for complex geometric operations such as Booleans, blending and deformations. However, their editability remain s a challenging task: as the definition of the shape is purely implicit, d irect manipulation of the shape cannot be performed. Thus, parameters of t he model are often exposed through abstract sliders, which have to be non- trivially created by the user and understood by others for each individual model to modify. Further, each of these sliders needs to be set one by on e to achieve the desired appearance. To circumvent this laborious process while preserving editability, we propose to directly manipulate the implic it surface in the viewport. We let the user naturally interact with the ou tput shape, leveraging points on a co-parameterization we design specifica lly for implicit surfaces, to guide the parameter updates and reach the de sired appearance faster. We leverage our automatic differentiation of the procedural implicit surface to propagate interactions made by the user in the viewport to the shape parameters themselves. We further design a solve r that uses such information to guide an intuitive and smooth user workflo w. We demonstrate different editing processes across multiple implicit sha pes and parameters that would be tedious by tuning sliders.\n\nRegistratio n Category: Full Access, Full Access Supporter\n\nLanguage Format: English Language\n\nSession Chair: Noam Aigerman (University of Montreal) URL:https://asia.siggraph.org/2024/program/?id=papers_540&sess=sess130 END:VEVENT END:VCALENDAR