PostDoc @imperialcollege, working on computer vision and robotics. PhD from @inria_paris Willow.

London
Joined June 2020
Use both: web.mit.edu/dimitrib/www/Les… TO is a Newton step on the Bellman equation. Policies and value functions are "memories" of past solutions; TO should be optimizing over them at inference time. Best of both worlds. Some of the strongest RL methods do this.
Should legged robot use RL or trajectory optimization? #icra2024
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Looking for new projects this year? ARCTIC (github.com/zc-alexfan/arctic) is a dataset that includes accurate body/hand/object poses, multi-view RGB videos for articulated object manipulation. There have been several emerging directions that worth following up since release. See 🧵
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HandNeRF Official Pytorch Implementation of "HandNeRF: Learning to Reconstruct Hand-Object Interaction Scene from a Single RGB Image", ICRA 2024 github.com/SamsungLabs/HandN…
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Zerui Chen retweeted
Excited to share our work in ICCV23(Oral)! tl;dr: 3D-fy everyday hand-object interaction clips, no template required. w/ @Poorvi_rh , @shubhtuls, and Abhinav. Project page: judyye.github.io/diffhoi-www
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This result from "RoDynRF: Robust Dynamic Radiance Fields" is not trivial. The method uses Mask-RCNN, motion from epipolar lines, coarse-to-fine optimization, a motion loss (RAFT), a depth ordering loss (MiDaS), a disparity smoothness loss, and a new NeRF design. Hard work!
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Zerui Chen retweeted
Avatars Grow Legs: Generating Smooth Human Motion from Sparse Tracking Inputs with Diffusion Model abs: arxiv.org/abs/2304.08577 project page: dulucas.github.io/agrol/
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The robot climbs stairs🏯, steps over stones 🪨, and runs in the wild🏞️, all in one policy, without any remote control! Our #CVPR2023 Highlight paper achieves this by using RL + a 3D Neural Volumetric Memory (NVM) trained with view synthesis! rchalyang.github.io/NVM/
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Introducing 𝗥𝗼𝗯𝗼𝗣𝗶𝗮𝗻𝗶𝘀𝘁 🎹🤖, a new benchmark for high-dimensional robot control! Solving it requires mastering the piano with two anthropomorphic hands. This has been one year in the making, and I couldn’t be happier to release it today! Some highlights below:
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Zerui Chen retweeted
Excited to share my internship project at NVIDIA! w/ @SifeiL @shubhtuls @XueT_Li Abhinav, etal. We revisit the classic affordance problem with diffusion models. With the recent advance in image synthesis, we can now hallucinate rich human interactions vividly.
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"near real-time method for 6-DoF tracking of an unknown object from a monocular RGBD video sequence [...] a Neural Object Field that is learned concurrently with a pose graph optimization process in order to robustly accumulate information into a consistent 3D representation"
BundleSDF: Neural 6-DoF Tracking and 3D Reconstruction of Unknown Objects Bowen Wen, et al. tl;dr: object-level SLAM, online pose graph optimization + Neural Object Field #CVPR2023 arxiv.org/pdf/2303.14158.pdf
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