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TZID:Asia/Hong_Kong
X-LIC-LOCATION:Asia/Hong_Kong
BEGIN:STANDARD
TZOFFSETFROM:+0800
TZOFFSETTO:+0800
TZNAME:HKT
DTSTART:19911015T033000
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BEGIN:VEVENT
DTSTAMP:20251218T030656Z
LOCATION:Meeting Room S421\, Level 4
DTSTART;TZID=Asia/Hong_Kong:20251215T140400
DTEND;TZID=Asia/Hong_Kong:20251215T141500
UID:siggraphasia_SIGGRAPH Asia 2025_sess104_tog_118@linklings.com
SUMMARY:PhysFiT: Physical-aware 3D Shape Understanding for Finishing Incom
 plete Assembly
DESCRIPTION:Weihao Wang (Tongji University College of Elect5ronic and Info
 rmation Engineering) and Mingyu You, Hongjun Zhou, and Bin He (Tongji Univ
 ersity)\n\nUnderstanding the part composition and structure of 3D shapes i
 s crucial for a wide range of 3D applications, including 3D part assembly 
 and 3D assembly completion. Compared to 3D part assembly, 3D assembly comp
 letion is more complicated which involves repairing broken or incomplete f
 urniture that miss several parts with a toolkit. The primary challenge per
 sists in how to reveal the potential part relations to infer the absent pa
 rts from multiple indistinguishable candidates with similar geometries, an
 d complete for well-connected, structurally stable and aesthetically pleas
 ing assemblies. This task necessitates not only specialized knowledge of p
 art composition but, more importantly, an awareness of physical constraint
 s, i.e., connectivity, stability, and symmetry. Neglecting these constrain
 ts often results in assemblies that, although visually plausible, are impr
 actical. To address this challenge, we propose PhysFiT, a physical-aware 3
 D shape understanding framework. This framework is built upon attention-ba
 sed part relation modeling and incorporates connection modeling, simulatio
 n-free stability optimization and symmetric transformation consistency. We
  evaluate its efficacy on 3D part assembly and 3D assembly completion, a n
 ovel assembly task presented in this work. Extensive experiments demonstra
 te the effectiveness of PhysFiT in constructing geometrically sound and ph
 ysically compliant assemblies.\n\nRegistration Category: Full Access, Full
  Access Supporter\n\nSession Chair: Xuejin Chen (University of Science and
  Technology of China)\n\n
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