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[Journal club] Flow as the Cross-Domain Manipul...
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Semantic Machine Intelligence Lab., Keio Univ.
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April 09, 2026
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[Journal club] Flow as the Cross-Domain Manipulation Interface
Semantic Machine Intelligence Lab., Keio Univ.
PRO
April 09, 2026
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Transcript
Mengda Xu1,2,3 Zhenjia Xu1,2 Yinghao Xu1 Cheng Chi1,2 Gordon Wetzstein1
Manuela Veloso3,4 Shuran Song1,2 1Stanford University, 2Columbia University, 3J.P. Morgan AI Research, 4Carnegie Mellon University Flow as the Cross-Domain Manipulation Interface 2026 ææµŠåæç 究宀 å°æè倪 Xu, Mengda., Xu, Zhenjia., Xu, Yinghao., Chi, Cheng., Wetzstein, Gordon., Veloso, Manuela., Song, Shuran. âFlow as the Cross-domain Manipulation Interfaceâ. In 8th Conference of Robot Learning, 2024. CoRL24
æŠèŠ 2 âª èæ¯ âª å®æ©ã§ã®ããŒã¿åéã¯é«ã³ã¹ã 容æã«åéå¯èœãªããŒã¿ãããããåŠç¿ã«äœ¿ããã ⪠人éã®åç»ïŒã·ãã¥ã¬ãŒã·ã§ã³ããŒã¿ âª
ææ¡ææ³ïŒIm2Flow2Act ⪠object flow ãåªä»ã«ããè»éçæãã¬ãŒã ã¯ãŒã¯ ãšã³ããã£ã¡ã³ããç°å¢ã«äŸããªãåäœè¡šçŸ âª çµæ ⪠ããããã®å®æ©ããŒã¿ã䜿çšããã«ç©äœæäœå¯èœ ⪠ã·ãã¥ã¬ãŒã·ã§ã³ã»å®æ©å®éšã«ãããŠããŒã¹ã©ã€ã³ãäžåã
èæ¯ïŒãšã³ããã£ã¡ã³ããç°å¢ã«äŸããªãåäœè¡šçŸã®å¿ èŠæ§ 3 ï ããããã®å®æ©ããŒã¿ã®åéã¯é«ã³ã¹ã ï 宿©ç°å¢ã«åãããã·ãã¥ã¬ãŒã¿ç°å¢ã®æ§ç¯ã¯é«ã³ã¹ã åéã³ã¹ãã®äœãããŒã¿ãçšããã ⌠人éåç» ï
human-robot ã®ãšã³ããã£ã¡ã³ãã®ã£ãã ⌠ã·ãã¥ã¬ãŒã¿ã®åäžç°å¢ã«ãããè»éããŒã¿ ï sim-real ã®ãã¡ã€ã³ã®ã£ãã (èæ¯, ç©äœãã¯ã¹ãã£, etc...) ãšã³ããã£ã¡ã³ããç°å¢ã«äŸããªãåäœè¡šçŸã®å¿ èŠæ§
é¢é£ç ç©¶: cross-domain data ããã®ããããåŠç¿ 4 ææ³ ç¹åŸŽ VRB [Bahl+, CVPR23]
人éåç»ããç©äœã®ææç¹ãšè»éãåŠç¿ PEAC [Ying+, NeurIPS24] Cross-embodiment data ãã latent action ãåŠç¿ ATM [Wen+, RSS24] 人éåç»ãã hand-centric ãªãããŒãåŠç¿ ï 宿©é©çšæã« target embodiment ã§ã®ããŒã¿åéãå¿ èŠ VRB [Bahl+, CVPR23] ATM [Wen+, RSS24]
ææ¡ææ³ïŒIm2Flow2Act 5 â Im2FlowïŒåæç»å, èšèªæç€º object flow ã¿ã¹ã¯ããšã«åéãã人éåç»ãçšããŠèšç·Ž object flowã«ãã
cross-embodiment data ãçšããè»éçæãã¬ãŒã ã¯ãŒã¯ ⺠ç©äœã®å§¿å¢ãå€åœ¢ã衚çŸå¯èœ ⺠embodiment-agnostic âº èæ¯ããã¯ã¹ãã£ã«é å¥ â¡ Flow2ActïŒobject flow, çŸåšç»å è»é ã·ãã¥ã¬ãŒã¿ã§åéããè»éããŒã¿ãçšããŠèšç·Ž ã¿ã¹ã¯å šäœã«ãããç©äœè»é
åæïŒLDM (Latent Diffusion Model), AnimateDiff 6 äºååŠç¿æžã¿T2Iæ¡æ£ã¢ãã« (SD) ã« motion
module ãå°å ¥ããŠåç»ãçæ âŒ Temporal Transformer ⺠æéæ¹åã®äžè²«æ§ãåäž âŒ T2Iã¢ãã«ã freeze ããŠåŠç¿ãè¡ã ⺠äœã³ã¹ããªèšç·Ž AnimateDiff [Guo+, ICLR24] LDM [Rombach+, CVPR22] çæç©ºéãäœæ¬¡å ãªæœåšç©ºéã«ããã ãšã§é«å質ãªç»åãé«éã«çæå¯èœ ⌠cross-attention ⺠æè»ãªæ¡ä»¶å ¥å (text, bbox, etc...) ⌠èšç®éãåæž ⺠é«å¹çãªèšç·Ž ⺠é«éãªæšè« ⌠Stable Diffusion ãäœ¿çš LDM [Rombach+, CVPR22] AnimateDiff [Guo+, ICLR24]
(b) AnimateDiff (SDããŒã¹) ã§ãããŒãçæ â ãããŒãSDã®æœåšç©ºéã«ãšã³ã³ãŒã ð¥0:ð 0 = ðžð
â±ð |ð â [0, ð] â¡ motion module ãèšç·Ž ð¥1:ð ð¡ = àŽ€ ðŒð¡ ð¥1:ð 0 + 1 â àŽ€ ðŒð¡ ð1:ð (æ¡æ£éçš) â = ðŒ ðž â±1:ð ,ð¥0 0,ð,ðŠ,ð0:ð~ð© 0,ðŒ ,ð¡ ð â ðð ð¥1:ð ð¡ , ð¡, ð¥0 0, ð ð ððð(ð), ðð ð¡ð¥ð¡ ðŠ 2 2 ⢠ð·ð ãfinetuneããŠãããŒãåºå Im2FlowïŒFlow Generation Network 7 åæç»å + èšèªæç€º object flow â Grounding DINOã§bboxãååŸ â¡ bboxå ãåäžã«ãµã³ããªã³ã° â±0 â ð 3Ãð»Ãð ð¢, ð£, ð£ðð ðððððð¡ðŠ ð¢, ð£:ç»åå ã®åº§æš ð£ðð ðððððð¡ðŠ:ç©äœã®å¯èŠæ§ (a) ð» ð â±1 â ð 3ÃðÃð»Ãð â±0:ð ïŒæ£è§£ãã㌠ð ïŒåæç»å ðŠ ïŒèšèªæç€º ð¡ ïŒæå» ðžð ïŒSDãšã³ã³ãŒã ð·ð ïŒSDãã³ãŒã àŽ€ ðŒt :ãã€ãºã¹ã±ãžã¥ãŒã© (pre-defined) ð ð ððð/ðð ð¡ð¥ð¡ïŒCLIPãšã³ã³ãŒã (ç»å/èšèª)
(c) 1)State Encoder ð : ð ð¡ = ð(ðð¡ , ð¥0
) ã» (察象ã®äœçœ®ãå§¿å¢ã«é¢ãã) ç¶æ 衚çŸãçæ ã»åç¹ã®åº§æšããšã³ã³ãŒããCLSããŒã¯ã³ã§èŠçŽ 2)Temporal Alignment ð : ð§ð¡ = ð(â±0:ð , ð ð¡ , ðð¡ ) ã»æå»t 以éã®ãããŒã«ã€ããŠã®æœåšè¡šçŸãäºæž¬ ã»ð¿2 lossïŒ Æž ð§ð¡ â ð§ð¡ 2 Æž ð§ð¡ = ð ðð¡:ð 3)Diffusion Action Head : ð(ðð¡ |ð§ð¡ , ð ð¡ , ðð¡ ) æ¡æ£ã¢ãã«ãçšããŠè»éç³»åãçæ Flow2ActïŒ Flow-Conditioned Policy 8 ðð¡ : Nåã® key point ã®æå»tã«ããã ç»åå åº§æš ð¢ð¡ ð, ð£ð¡ ð ð=1 ð ð¥0 : Nåã® key point ã®åæãã¬ãŒã ã«ããã3次å åº§æš â±0:ð : ã¿ã¹ã¯å šäœã® object flow ðð¡ : ããããã® proprioception ð : ãããŒãæœåšè¡šçŸã«ãšã³ã³ãŒã ðð¡ : æå»tããã®è»éç³»å ðð¡ , ⊠, ðð¡+ð¿ (b) Online Point Tracking TAPIR ãçšã㊠key point ã远跡 TAPIR [Doersch+, ICCV23] object flow, çŸåšç»å è»é
å®éšèšå® 9 ⌠4ã€ã®ã¿ã¹ã¯ã§è©äŸ¡ ⌠Pick-and-place ⌠Pouring ⌠Open
drawer ⌠Folding cloth ⌠åŠç¿èšå® ⌠object flow: ⌠H=W=32 ⌠T=32 ⌠åŠç¿æéïŒèšèŒãªã ⌠ããããïŒUR5e â±1 â ð 3ÃðÃð»Ãð ⌠èšç·ŽããŒã¿ ⌠人éåç» âŒ äººéã«ããåã¿ã¹ã¯ã®ã㢠⌠ããŒã¿æ°: èšèŒãªã ⌠ã·ãã¥ã¬ãŒã¿ïŒMuJoCo ⌠ããããïŒUR5e ⌠ããŒã¿æ°: 4800
å®éççµæ@Simulation 10 âº å šãŠã®ã¿ã¹ã¯ã§ä»ææ³ãäžåã Demonstration-conditioned åäžã®äººéã®ãã¢ããobject flowãæœåº Language-conditioned åæãã¬ãŒã ãšèšèªæç€ºãå ¥åãšããã·ã¹ãã å šäœã®è©äŸ¡ Ablation
1)Heuristic å§¿å¢æšå®ã«ããè»éçæ 2)Grid Flow ç»åå šäœãäžæ§ã«ãµã³ããªã³ã° 3)No alignment Temporal Alignmentã䜿çšããªã
å®éççµæ@Real-World 11 âº å šãŠã®ã¿ã¹ã¯ã§ä»ææ³ãäžåã Demonstration-conditioned åäžã®äººéã®ãã¢ããobject flowãæœåº Language-conditioned åæãã¬ãŒã ãšèšèªæç€ºãå ¥åãšããã·ã¹ãã å šäœã®è©äŸ¡ Ablation
1)Heuristic å§¿å¢æšå®ã«ããè»éçæ 2)Grid Flow ç»åå šäœãäžæ§ã«ãµã³ããªã³ã° 3)No alignment Temporal Alignmentã䜿çšããªã
宿§ççµæ 12 ⺠object flow ãç©äœã®è»éãé©åã«è¡šçŸ
宿§ççµæ: Ablation Study ã«ããã倱æäŸ 13 ã¯ããã«åŒãåºããæŒãæ»ã è»éã¯æ£ãããïŒã³ãããå転ããŠãã ãããŒãšå®è»éã«ãããæå»ã®äžæŽå ï äžæ£ç¢ºãªåäœ
ï 誀ã£ãæ¹åãžã®åäœ ï ãžãã¿ãŒãçºç
ãŸãšã 14 âª èæ¯ âª å®æ©ã§ã®ããŒã¿åéã¯é«ã³ã¹ã 容æã«åéå¯èœãªããŒã¿ãããããåŠç¿ã«äœ¿ããã ⪠人éã®åç»ïŒã·ãã¥ã¬ãŒã·ã§ã³ããŒã¿ âª
ææ¡ææ³ïŒIm2Flow2Act ⪠object flow ãåªä»ã«ããè»éçæãã¬ãŒã ã¯ãŒã¯ ãšã³ããã£ã¡ã³ããç°å¢ã«äŸããªãåäœè¡šçŸ âª çµæ ⪠ããããã®å®æ©ããŒã¿ã䜿çšããã«ç©äœæäœå¯èœ ⪠ã·ãã¥ã¬ãŒã·ã§ã³ã»å®æ©å®éšã«ãããŠããŒã¹ã©ã€ã³ãäžåã