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Xuanchi Ren

Student

University of Toronto

Biography

I am a PhD student at University of Toronto, machine learning group and Vector Institute. I am also a research intern at NVIDIA. My supervisor is Prof. Sanja Fidler. During my undergraduate years at HKUST, I was supervised by Prof. Qifeng Chen and I was fortunate to work with Dr. Li Erran Li, Prof. Alexandre Alahi@EPFL, Dr. Yuwang Wang@MSRA and Prof. Xiaolong Wang@UCSD.

My research interests are in computer vision, particularly generative modeling and 3D vision.

Interests

  • Computer Vision
  • Deep Learning

Education

  • PhD student in Computer Science, 2022-Now

    University of Toronto

  • Exchange student, 2020 Spring

    EPFL

  • BSc in Compter Science and Math, 2017-2022

    HKUST

Publications

Xuanchi Ren*, Yifan Lu*, Tianshi Cao*, Ruiyuan Gao*, Shengyu Huang, Amirmojtaba Sabour, Tianchang Shen, Tobias Pfaff, Jay Zhangjie Wu, Runjian Chen, Seung Wook Kim, Jun Gao, Laura Leal-Taixe, Mike Chen, Sanja Fidler, Huan Ling (2025). Cosmos-Drive-Dreams: Scalable Synthetic Driving Data Generation with World Foundation Models. White Paper.

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Xuanchi Ren*, Tianchang Shen*, Jiahui Huang, Huan Ling, Yifan Lu, Merlin Nimier-David, Thomas Müller, Alexander Keller, Sanja Fidler, Jun Gao (2025). GEN3C: 3D-Informed World-Consistent Video Generation with Precise Camera Control. CVPR 2025 Highlight (3% acceptance rate).

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NVIDIA (2025). Cosmos-Transfer1: Conditional World Generation with Adaptive Multimodal Control. White Paper (Core Contributor; Featured in Jensen Huang's GTC 2025 keynote).

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Jay Zhangjie Wu*, Yuxuan Zhang*, Haithem Turki, Xuanchi Ren, Jun Gao, Mike Zheng Shou, Sanja Fidler, Zan Gojcic†, Huan Ling† (2025). Difix3D+: Improving 3D Reconstructions with Single-Step Diffusion Models. CVPR 2025 Oral (0.7% acceptance rate).

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Yifan Lu*, Xuanchi Ren*, Jiawei Yang, Tianchang Shen, Zhangjie Wu, Jun Gao, Yue Wang, Siheng Chen, Mike Chen, Sanja Fidler, Jiahui Huang (2025). InfiniCube: Unbounded and Controllable Dynamic 3D Driving Scene Generation with World-Guided Video Models. Under Review.

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Xuanchi Ren*, Yifan Lu*, Hanxue Liang, Jay Zhangjie Wu, Huan Ling, Mike Chen, Sanja Fidler, Francis Williams, Jiahui Huang (2024). SCube: Instant Large-Scale Scene Reconstruction using VoxSplats. NeurIPS 2024.

Website

Xuanchi Ren, Jiahui Huang, Xiaohui Zeng, Ken Museth, Sanja Fidler, Francis Williams (2023). XCube: Large-Scale 3D Generative Modeling using Sparse Voxel Hierarchies. CVPR 2024 Highlight (2.8% acceptance rate).

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Chenyang Lei*, Xuanchi Ren*, Zhaoxiang Zhang, Qifeng Chen (2023). Blind Deflickering by Neural Filtering with a Flawed Atlas. CVPR 2023.

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Xuanchi Ren, Xiaolong Wang (2022). Look Outside the Room: Synthesizing A Consistent Long-Term 3D Scene Video from A Single Image. CVPR 2022.

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Xuanchi Ren*, Tao Yang*, Yuwang Wang, Wenjun Zeng (2021). Learning Disentangled Representation by Exploiting Pretrained Generative Models: A Contrastive Learning View. ICLR 2022.

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Dacheng Yin*, Xuanchi Ren*, Chong Luo, Yuwang Wang, Zhiwei Xiong, Wenjun Zeng (2021). Retriever: Learning Content-Style Representation as a Token-Level Bipartite Graph. ICLR 2022.

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Tao Yang, Xuanchi Ren, Yuwang Wang, Wenjun Zeng (2021). Towards Building A Group-based Unsupervised Representation Disentanglement Framework. ICLR 2022.

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Xuanchi Ren, Tao Yang, Yuwang Wang, Wenjun Zeng (2021). Rethinking Content and Style: Exploring Bias for Unsupervised Disentanglement. ICCV Workshop 2021.

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Xuanchi Ren*, Tao Yang*, Li Erran Li, Alexandre Alahi, Qifeng Chen (2021). Safety-aware Motion Prediction with Unseen Vehicles for Autonomous Driving. ICCV 2021.

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Xuanchi Ren*, Zian Qian*, Qifeng Chen (2020). Video Deblurring by Fitting to Test Data. Preprint.

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Xuanchi Ren, Haoran Li, Zijian Huang, Qifeng Chen (2019). Self-supervised Dance Video Synthesis Conditioned on Music. ACM MM 2020. Full Oral Presentation (9% acceptance rate).

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Projects

Innovate the Retail Industry with Automatic Checkout System
Xuanchi Ren, Zian Qian, Zhiwei Wang
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On the Performance Benefits of Zeroth Order Methods in the Context of Adversarial Training
XAlice Biryukov, Nicolas Dutly, Xuanchi Ren