Jiawei Ren
jiawei011 AT e.ntu.edu.sg
I am a Research Scientist at NVIDIA Spatial Intelligence Lab. I received my bachelor's and PhD from Nanyang Technological University, where I was advised by Prof. Ziwei Liu.
Selected Publications
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Instant NuRec: Feed-Forward 3D Gaussian Reconstruction for Driving Scene Simulation
Jiahui Huang, Jiawei Ren, Michal Tyszkiewicz, Bjoern Haefner, Michael Shelley, Xin Kang, Seung Wook Kim, Ning Xu, Qi Wu, Janick Martinez Esturo, Shengyu Huang, Nick Schneider, Laura Leal-Taixe, Zan Gojcic, Sanja Fidler
arXiv, 2026
Arxiv / Code
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Déjà View: Looping Transformers for Multi-View 3D Reconstruction
Alessandro Burzio*, Tobias Fischer*, Sven Elflein, Qunjie Zhou, Riccardo de Lutio, Jiawei Ren, Jiahui Huang, Shengyu Huang, Marc Pollefeys, Laura Leal-Taixe, Zan Gojcic†, Haithem Turki†
arXiv, 2026
Arxiv / Code / Project Page
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TokenGS: Decoupling 3D Gaussian Prediction from Pixels with Learnable Tokens
Jiawei Ren*, Michal Tyszkiewicz*, Jiahui Huang†, Zan Gojcic†
CVPR, 2026 (Highlight)
Arxiv / Code / Project Page
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Lyra 2.0: Explorable Generative 3D Worlds
Tianchang Shen*, Sherwin Bahmani, Kai He, Sangeetha Grama Srinivasan, Tianshi Cao, Jiawei Ren, Ruilong Li, Zian Wang, Nicholas Sharp, Zan Gojcic, Sanja Fidler, Jiahui Huang, Huan Ling, Jun Gao, Xuanchi Ren*
arXiv, 2026
Arxiv / Code / Project Page
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Asset Harvester: Extracting 3D Assets from Autonomous Driving Logs for Simulation
Tianshi Cao*, Jiawei Ren*, Yuxuan Zhang, Jaewoo Seo, Jiahui Huang, Shikhar Solanki, Haotian Zhang, Mingfei Guo, Haithem Turki, Muxingzi Li, Yue Zhu, Sipeng Zhang, Zan Gojcic, Sanja Fidler, Kangxue Yin*
arXiv, 2026
Arxiv / Code / Project Page
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Lyra: Generative 3D Scene Reconstruction via Video Diffusion Model Self-Distillation
Sherwin Bahmani, Tianchang Shen, Jiawei Ren, Jiahui Huang, Yifeng Jiang, Haithem Turki, Andrea Tagliasacchi, David B. Lindell, Zan Gojcic, Sanja Fidler, Huan Ling, Jun Gao, Xuanchi Ren
ICLR, 2026
Arxiv / Code / Project Page
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ViPE: Video Pose Engine for 3D Geometric Perception
Jiahui Huang, Qunjie Zhou, Hesam Rabeti, Aleksandr Korovko, Huan Ling, Xuanchi Ren, Tianchang Shen, Jun Gao, Dmitry Slepichev, Chen-Hsuan Lin, Jiawei Ren, Kevin Xie, Joydeep Biswas, Laura Leal-Taixe, Sanja Fidler
NVIDIA Research Whitepapers, 2025
Arxiv / Code / Project Page
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BTimer: Feed-Forward Bullet-Time Reconstruction of Dynamic Scenes from Monocular Videos
Hanxue Liang*, Jiawei Ren*, Ashkan Mirzaei*, Antonio Torralba, Ziwei Liu, Igor Gilitschenski, Sanja Fidler, Sanja Fidler, Cengiz Oztireli, Huan Ling, Zan Gojcic, Jiahui Huang
NeurIPS, 2025
Arxiv / Project Page
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L4GM: Large 4D Gaussian Reconstruction Model
Jiawei Ren, Kevin Xie, Ashkan Mirzaei, Hanxue Liang, Xiaohui Zeng, Karsten Kreis, Ziwei Liu, Antonio Torralba, Sanja Fidler, Seung Wook Kim, Huan Ling
NeurIPS, 2024
Arxiv / Code / Project Page
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InsActor: Instruction-driven Physics-based Characters
Jiawei Ren*, Mingyuan Zhang*, Cunjun Yu*, Xiao Ma, Liang Pan, Ziwei Liu
NeurIPS, 2023
Arxiv / Code / Project Page / Video
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DiffMimic: Efficient Motion Mimicking with Differentiable Physics
Jiawei Ren*, Cunjun Yu*, Siwei Chen, Xiao Ma, Liang Pan, Ziwei Liu
ICLR, 2023
Arxiv / Code / Project Page / Demo / Video
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LaserMix for Semi-Supervised LiDAR Semantic Segmentation
Lingdong Kong*, Jiawei Ren*, Liang Pan, Ziwei Liu
CVPR, 2023 (Highlight)
Arxiv / Code / Project Page
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Benchmarking and Analyzing Point Cloud Classification under Corruptions
Jiawei Ren, Liang Pan, Ziwei Liu
ICML, 2022
Arxiv / Code / Project Page/ Talk/ Demo/ Challenge
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Balanced MSE for Imbalanced Visual Regression
Jiawei Ren, Mingyuan Zhang, Cunjun Yu, Ziwei Liu
CVPR, 2022 (Oral)
Arxiv / Code / Project Page / Talk / Demo / Tutorial
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Balanced Meta-Softmax for Long-Tailed Visual Recognition
Jiawei Ren, Cunjun Yu, Shunan Sheng, Xiao Ma, Haiyu Zhao, Shuai Yi, Hongsheng Li
NeurIPS, 2020
Arxiv / Code / Project Page