Youtian Lin

Youtian Lin (林尤添)

Ph.D. Student

Computer Vision & Graphics

NJU-3DV Lab

About Me

I am a first-year Ph.D. student at Nanjing University (NJU), supervised by Prof. Yao Yao, Prof. Xun Cao and Prof. Tieniu Tan. Previously, I pursued a Ph.D. at the Harbin Institute of Technology (HIT). I earned my M.S. from the Harbin Engineering University (HEU) in 2021, where I was advised by Prof. Jian Guan.

I worked at leading 3D generation startups DreamTech (Neural4D), VAST (Tripo AI) and Taichi (Meshy AI), where I contributed to their early 3D generation breakthroughs.

Interests
  • 3D/4D Reconstruction & Generation
  • Neural Rendering
  • Generative Models
  • High-Performance GPU Programming
Education

  • PhD in Computer Science, 2024 - Present

    Nanjing University (NJU)

  • PhD in Computer Science, 2021 - 2023

    Harbin Institute of Technology (HIT)

  • M.S. in Computer Science, 2018 - 2021

    Harbin Engineering University (HEU)

  • B.S. in Computer Science, 2014 - 2018

    Harbin University of Science and Technology (HRBUST)

News

2025-09-24
New paper: SpatialVID — for world model and spatial intelligence.
2025-09-19
Direct3D-S2 is accepted to NeurIPS 2025.
2025-07-05
Align Your Rhythm is accepted to ICCV 2025.
2025-05-29
New work release: Direct3D-S2.
2025-05-06
In summer 2025, I will join Apple as a Research Intern.
2024-09-27
Two papers (Direct3D, FastDrag) accepted to NeurIPS 2024.
2024-07-01
Three ECCV 2024 papers: Relightable 3D Gaussian, STAG4D, UniDream.

Highlight Publications

SpatialVID: A Large-Scale Video Dataset with Spatial Annotations
ArXiv 2025
Jiahao Wang, Yufeng Yuan, Rujie Zheng, Youtian Lin, Jian Gao, Lin-Zhuo Chen, Yajie Bao, Yi Zhang, Chang Zeng, Yanxi Zhou, Xiao-Xiao Long, Hao Zhu, Zhaoxiang Zhang, Xun Cao, Yao Yao
Direct3D-S2: Gigascale 3D Generation Made Easy with Spatial Sparse Attention
Conference on Neural Information Processing Systems (NeurIPS) 2025
Shuang Wu*, Youtian Lin*, Yifei Zeng, Yikang Yang, Yajie Bao, Jiachen Qian, Siyu Zhu, Feihu Zhang, Xun Cao, Philip Torr, Yao Yao
Gaussian-Flow: 4D Reconstruction with Dynamic 3D Gaussian Particles
IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR) 2024 - Highlight
Youtian Lin, Zuozhuo Dai, Siyu Zhu, Yao Yao
Relightable 3D Gaussian: Real-time Point Cloud Relighting with BRDF Decomposition and Ray Tracing
European Conference on Computer Vision (ECCV) 2024
Jian Gao, Chun Gu, Youtian Lin, Hao Zhu, Xun Cao, Li Zhang, Yao Yao

Publications

TEXTRIX: Latent Attribute Grid for Native Texture Generation and Beyond
ArXiv 2025
Yifei Zeng*, Yajie Bao*, Jiachen Qian, Shuang Wu, Youtian Lin, Hao Zhu, Buyu Li, Feihu Zhang, Xun Cao, Yao Yao
TEXTRIX: Latent Attribute Grid for Native Texture Generation and Beyond
SpatialVID: A Large-Scale Video Dataset with Spatial Annotations
ArXiv 2025
Jiahao Wang, Yufeng Yuan, Rujie Zheng, Youtian Lin, Jian Gao, Lin-Zhuo Chen, Yajie Bao, Yi Zhang, Chang Zeng, Yanxi Zhou, Xiao-Xiao Long, Hao Zhu, Zhaoxiang Zhang, Xun Cao, Yao Yao
SpatialVID: A Large-Scale Video Dataset with Spatial Annotations
Align Your Rhythm: Generating Highly Aligned Dance Poses with Gating-Enhanced Rhythm-Aware Feature Representation
IEEE/CVF International Conference on Computer Vision (ICCV) 2025
Congyi Fan, Jian Guan, Xuanjia Zhao, Dongli Xu, Youtian Lin, Tong Ye, Pengming Feng, Haiwei Pan
Align Your Rhythm
Direct3D-S2: Gigascale 3D Generation Made Easy with Spatial Sparse Attention
Conference on Neural Information Processing Systems (NeurIPS) 2025
Shuang Wu*, Youtian Lin*, Yifei Zeng, Yikang Yang, Yajie Bao, Jiachen Qian, Siyu Zhu, Feihu Zhang, Xun Cao, Philip Torr, Yao Yao
Direct3D-S2
Flow Distillation Sampling: Regularizing 3D Gaussians with Pre-trained Matching Priors
International Conference on Learning Representations (ICLR) 2025
Lin-Zhuo Chen*, Kangjie Liu*, Youtian Lin, Zhihao Li, Siyu Zhu, Xun Cao, Yao Yao
Flow Distillation Sampling
Direct3D: Scalable Image-to-3D Generation via 3D Latent Diffusion Transformer
Conference on Neural Information Processing Systems (NeurIPS) 2024
Shuang Wu*, Youtian Lin*, Feihu Zhang, Yifei Zeng, Jingxi Xu, Philip Torr, Xun Cao, Yao Yao
Direct3D
FastDrag: Manipulate Anything in One Step
Conference on Neural Information Processing Systems (NeurIPS) 2024
Xuanjia Zhao, Jian Guan, Congyi Fan, Dongli Xu, Youtian Lin, Haiwei Pan, Pengming Feng
FastDrag
STAG4D: Spatial-Temporal Anchored Generative 4D Gaussians
European Conference on Computer Vision (ECCV) 2024
Yifei Zeng*, Yanqin Jiang*, Siyu Zhu, Yuanxun Lu, Youtian Lin, Hao Zhu, Weiming Hu, Xun Cao, Yao Yao
STAG4D
Gaussian-Flow: 4D Reconstruction with Dynamic 3D Gaussian Particles
IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR) 2024 - Highlight
Youtian Lin, Zuozhuo Dai, Siyu Zhu, Yao Yao
Gaussian-Flow
Relightable 3D Gaussian: Real-time Point Cloud Relighting with BRDF Decomposition and Ray Tracing
European Conference on Computer Vision (ECCV) 2024
Jian Gao, Chun Gu, Youtian Lin, Hao Zhu, Xun Cao, Li Zhang, Yao Yao
Relightable 3D Gaussian
UniDream: Unifying Diffusion Priors for Relightable Text-to-3D Generation
European Conference on Computer Vision (ECCV) 2024
Zexiang Liu*, Yangguang Li*, Youtian Lin*, Xin Yu, Sida Peng, Yan-Pei Cao, Xiaojuan Qi, Xiaoshui Huang, Ding Liang, Wanli Ouyang
UniDream
Ced-NeRF: A Compact and Efficient Method for Dynamic Neural Radiance Fields
AAAI Conference on Artificial Intelligence (AAAI) 2024
Youtian Lin
Ced-NeRF

See Full List

Service

  • Conference Reviewer
    • IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)
    • IEEE/CVF International Conference on Computer Vision (ICCV)
    • Conference on Neural Information Processing Systems (NeurIPS)
    • International Conference on Learning Representations (ICLR)
    • International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
    • AAAI Conference on Artificial Intelligence (AAAI)
    • ACM SIGGRAPH Asia
  • Journal Reviewer
    • IEEE Transactions on Visualization and Computer Graphics (TVCG)
    • IEEE Transactions on Circuits and Systems for Video Technology (TCSVT)

Projects

Pointrix
Differentiable point‑based rendering library for 3D reconstruction and rendering.
Pointrix
threestudio-3DGS
Gaussian Splatting extension for threestudio framework.
threestudio-3DGS
taichi-nerfs
Taichi + PyTorch Instant‑NGP training pipeline for neural radiance fields.
taichi-nerfs
taichi-ngp-renderer
Instant‑NGP renderer implemented in pure Python using Taichi.
taichi-ngp-renderer
nerfacc
Fast NeRF acceleration toolkit (contributor).
nerfacc

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