Peize Sun 孙培泽 Email: sunpeize AT foxmail DOT com

Biography

I am a Member of Technical Staff in xAI, building Grok Imagine and AGI.

Before, I was a research scientist in Meta, FAIR, working on visual perception and multimodal large language models. I recieved my PhD from The University of Hong Kong, advised by Prof. Ping Luo, and my bachelor and master degree from Xi'an Jiaotong University. I interned at ByteDance(Beijing, China), Cruise(Sunnyvale, USA), Meta(Menlo Park, USA) and Megvii(Beijing, China).

Shipped Features

• Grok Imagine, xAI January, 2026 [blog] [app]
• Segment Anything 3, Meta November, 2025 [paper] [code]
• Llama 4, Meta April, 2025 [blog] [code]

Publications (show selected / show all)

DiffusionDet: Diffusion Model for Object Detection

Shoufa Chen, Peize Sun, Yibing Song, Ping Luo

International Conference on Computer Vision (ICCV), 2023, Oral  Best Paper Finalist

[paper] [code]

VLPart: Going Denser with Open-Vocabulary Part Segmentation

Peize Sun, Shoufa Chen, Chenchen Zhu, Fanyi Xiao, Ping Luo, Saining Xie, Zhicheng Yan

International Conference on Computer Vision (ICCV), 2023

[paper] [code]

DanceTrack: Multi-Object Tracking in Uniform Appearance and Diverse Motion

Peize Sun*, Jinkun Cao*, Yi Jiang, Zehuan Yuan, Song Bai, Kris Kitani, Ping Luo

Conference on Computer Vision and Pattern Recognition (CVPR), 2022

[paper] [project page] [code]

TransTrack: Multiple Object Tracking with Transformer

Peize Sun, Jinkun Cao, Yi Jiang, Rufeng Zhang, Enze Xie, Zehuan Yuan, Changhu Wang, Ping Luo

arXiv:2012.15460

[paper] [code]

OneNet: What Makes for End-to-End Object Detection ?

Peize Sun, Yi Jiang, Enze Xie, Wenqi Shao, Zehuan Yuan, Changhu Wang, Ping Luo

International Conference on Machine Learning (ICML), 2021

[paper] [code]

Sparse R-CNN: End-to-End Object Detection with Learnable Proposals

Peize Sun*, Rufeng Zhang*, Yi Jiang*, Tao Kong, Chenfeng Xu, Wei Zhan, Masayoshi Tomizuka, Lei Li, Zehuan Yuan, Changhu Wang, Ping Luo

Conference on Computer Vision and Pattern Recognition (CVPR), 2021

[paper] [code]

Honors

• HKU Research Postgraduate Student Innovation Award, 2023
• Hong Kong PhD Fellowship, 2020 - 2024
• Chiang Chen Enterprise Scholarship, 2017, 2018
• First-class Academic Scholarship, 2018
• First-class Recommended Postgraduate Scholarship, 2017
• National Scholarship, 2016
• National Endeavor Scholarship, 2014, 2015

Academic Service

• Conference Workshop: Multiple Object Tracking and Segmentation in Complex Environments Workshop, ECCV 2022
• Conference Review: Conference on Computer Vision and Pattern Recognition (CVPR) International Conference on Computer Vision (ICCV) European Conference on Computer Vision (ECCV) Conference on Neural Information Processing Systems (NeurIPS) International Conference on Machine Learning (ICML) International Conference on Learning Representations (ICLR)
• Journal Review: International Journal of Computer Vision Transactions on Image Processing Transactions on Multimedia Transactions on Intelligent Transportation Systems Transactions on Circuits and Systems for Video Technology Journal of Neurocomputing