About me

Welcome! I am Jiaxin Zhang(张佳鑫, Jason), a master student in Computer Science at Harbin Institute of Technology (HIT), supervised by Prof. Junjun Jiang. Currently, I am an intern at the Multimodal Large Model Lab of Huawei 2012 Laboratories, where I am mentored by Dave Zhenyu Chen. Prior to this, I earned my Bachelor’s degree in Computer Science from HIT.

My research focuses on 3D vision, geometry-aware multimodal spatial understanding, and world-consistent video generation, with the long-term goal of building spatially intelligent systems for embodied AI. Beyond research, I am a backpacker—either my body or my mind is always on the road.

Internships

• 2025.05 - 2026.04: Research Intern
  • Huawei 2012 Laboratories, Huawei
  • Department: Multimodal Large Model Lab
  • Supervisor: Dave Zhenyu Chen

Selected Award

• China National Scholarship, 2025
• Special-Class Scholarship for Postgraduate Students, 2024, 2025(Top 0.3%)
• Outstanding Graduate of Heilongjiang Province, China, 2024
• The First-class Scholarship at Harbin Institute of Technology, 2022, 2023
• Tencent Scholarship, 2023

Publications

GAP-MLLM: Geometry-Aligned Pre-training for Activating 3D Spatial Perception in Multimodal Large Language Models
Jiaxin Zhang, Junjun Jiang, Haijie Li, Youyu Chen, Kui Jiang, Dave Zhenyu Chen
ECCV 2026

[Paper] [Code] [Project]

Reframing Gaussian Splatting Densification with Complexity-Density Consistency of Primitives
Zhemeng Dong, Junjun Jiang, Youyu Chen, Jiaxin Zhang, Kui Jiang, Xianming Liu
NeurIPS 2025

[Paper]

COB-GS: Clear Object Boundaries in 3DGS Segmentation Based on Boundary-Adaptive Gaussian Splitting
Jiaxin Zhang, Junjun Jiang, Youyu Chen, Kui Jiang, Xianming Liu
CVPR 2025

[Paper] [Code] [Project]