I am a senior undergraduate student with a strong interest in Multimodal LLMs Post-Training and Tool-Augmented Agentic System. I am fortunate to collaborate with Manling Li, Zhengzhong Tu, and Yue Zhao, and more broadly with Jiacheng Zhu, Yujun Cai, Yiwei Wang, and Shuo Li. Prior to that, I worked with Zhe Liu and Victor S. Sheng on research in Generalizable Medical Vision and Multimodal Machine Learning. I am deeply grateful to them for guiding me into the world of research.

I am actively seeking a 26 Fall CS PhD position. I am always open to collaborate, feel free to drop me an email or contact with me on wechat ID qiancxdotcom.

Research Interests

  • Multimodal Foundation Models (VLM, VLA, Videos, Spatial Intelligence etc.)πŸ”₯
  • Multimodal Post-Training (Reasoning, Alignment, Benchmarks, Agent)πŸ”₯πŸ”₯
  • Tool-Augmented Agentic RL (Visual Tools, RAG, Search Engine, Code Interpreter, APIs etc.)πŸ”₯πŸ”₯
  • Agent Application (Autonomous Driving, Biomedicine, Embodied AI)πŸ”₯πŸ”₯

πŸ”₯ News

  • 2025.10: Β πŸŽ‰πŸŽ‰ We propose Video-STAR, a powerful Tool-Augmented Agentic RL approach for Thinking with Videos. On open-vocabulary action recognition benchmarks like K-400 and HMDB-51, our 3B VLM achieves nearly 40% accuracy improvement over base models!πŸ”₯
  • 2025.09: Β πŸŽ‰πŸŽ‰ Our work HALF-GS, an efficient dynamic 3D reconstruction framework combining sparse anchors, self-supervised guidance, and hierarchical propagation to improve reconstruction quality and temporal consistency, has been accepted by NeurIPS 2025!
  • 2025.09: Β πŸŽ‰πŸŽ‰ We propose AutoDrive-RΒ², Incentivizing Reasoning and Self-Reflection Capacity for VLA Model in Autonomous Driving. We’re also honored that our work was featured by AutoDrive Heart (θ‡ͺεŠ¨ι©Ύι©ΆδΉ‹εΏƒ)!
  • 2025.08: Β πŸŽ‰πŸŽ‰ Our work Re-Align has been accepted by EMNLP 2025 Main Conference!
  • 2025.08: Β πŸŽ‰πŸŽ‰ I will serve as the Program Committee for AAAI 2026!.
  • 2025.07: Β πŸŽ‰πŸŽ‰ Our work on Generalizable Medical Vision has been Accepted by IEEE Transactions on Medical Imaging.
  • 2025.06: Β πŸŽ‰πŸŽ‰ We propose DVP-MVS++, a multi-view stereo method that integrates depth-normal-edge priors and visibility guidance for robust 3D Reconstruction, which is now available on ArXiv!
  • 2025.05: Β πŸŽ‰πŸŽ‰ Our work CLIMD has been Early Accepted by MICCAI 2025 (Top 9%).
  • 2025.03: Β πŸŽ‰πŸŽ‰ Excited to propose my first-author work DecAlign, a novel cross-modal decoupling and alignment framwork for multimodal representation learning, which is now available on ArXiv!
  • 2024.11: Β πŸŽ‰πŸŽ‰ Excited to propose my first-author work DynCIM, a novel dynamic multimodal curriculum learning framework in addressing cross-modal competition and imbalances, which is now available on ArXiv!
  • 2024.10: Β πŸŽ‰πŸŽ‰ We propose FASS, a novel frequency domain-enhanced approach for Medical Image Segmentation under Low-Contrast environment.
  • 2024.10: Β πŸŽ‰πŸŽ‰ Our work LiMT is now under Major Revision by Medical Image Analysis.
  • 2024.08: Β πŸŽ‰πŸŽ‰ Excited to propose my first-author work ALC, a novel adaptive label correction framework for medical image segmentation with noisy labels, which is now available on ArXiv!

πŸ“ Publications

Multimodal LLMs Post-Training

Preprint
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Video-STAR: Reinforcing Open-Vocabulary Action Recognition with Tools

Preprint

Zhenlong Yuan, Xiangyan Qu, Chengxuan Qian† (corresponding author), Rui Chen, Jing Tang, Lei Sun, Xiangxiang Chu, Dapeng Zhu, Yiwei Wang, Yujun Cai, Shuo Li.

Preprint
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AutoDrive-RΒ²: Incentivizing Reasoning and Self-Reflection Capacity for VLA Model in Autonomous Driving

Preprint

Featured by AutoDrive Heart (θ‡ͺεŠ¨ι©Ύι©ΆδΉ‹εΏƒ)

Zhenlong Yuan, Jing Tang, Jinguo Luo, Rui Chen, Lei Sun, Chengxuan Qian, Yujun Cai, Dapeng Zhang, Shuo Li.

Preprint
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Multimodal Foundation Models

Preprint
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DynCIM: Dynamic Curriculum for Imbalanced Multimodal Learning

Arxiv Preprint

Chengxuan Qian, Kai Han, Jingchao Wang, Zhenlong Yuan, Chongwen Lyu, Jun Chen†, Zhe Liu†.

MICCAI 2025
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CLIMD: A Curriculum Learning Framework for Imbalanced Multimodal Diagnosis

MICCAI 2025 Early Accept (Top 9% Paper)

Kai Han, Chongwen Lyu, Chengxuan Qian, Siqi Ma, Jun Chen†, Zhe Liu†,

Preprint
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Contrastive Intra- and Inter-modal Clustering for Multimodal Semantic Discovery

Under Review

Zhengzhong Zhu, Pei Zhou, Chengxuan Qian, Ruohong Yang, Yixuan Ye, Jiangping Zhu

Medical Image Analysis

Preprint
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Adaptive Label Correction Framework for Robust Medical Image Segmentation with Noisy Labels

Arxiv Preprint

Chengxuan Qian, K Han, Siqi Ma, Chongwen Lyu, Zhenlong Yuan, Jun Chen†, Zhe Liu†.

IEEE TMI 2025
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Region Uncertainty Estimation for Medical Image Segmentation with Noisy Labels

IEEE Transaction on Medical Imaging (Published July 2025)

Kai Han, Shuhui Wang, Jun Chen†, Chengxuan Qian, Chongwen Lyu, Siqi Ma, Victor S. Sheng†, Qingming Huang†, Zhe Liu†.

TCSVT 2024
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Frequency Domain Unlocks New Perspectives for Abdominal Medical Image Segmentation

arXiv Preprint

Kai Han, Siqi Ma, Chengxuan Qian, Jun Chen†, Chongwen Lyu, Victor S. Sheng†, Zhe Liu†.

MedIA 2024
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LiMT: A Multi-task Liver Image Benchmark Dataset

Medical Image Analysis (Major Revision)

Z Liu†, K Han, S Ma, J Chen†, …, C Qian, C Lyu, …, V S. Sheng†.

  • Dataset and Benchmarking work

3D Vision

Preprint
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DVP-MVS++: Synergize Depth-Normal-Edge and Harmonized Visibility Prior for Multi-View Stereo

IEEE Transactions on Circuits and Systems for Video Technology (Major Revision)

Zhenlong Yuan, Dapeng Zhang, Zehao Li, Chengxuan Qian, Jianing Chen, Yinda Chen, Kehua Chen, Tianlu Mao, Zhaoxin Li, Hao Jiang and Zhaoqi Wang

Preprint
sym

HAIF-GS: Hierarchical and Induced Flow-Guided Gaussian Splatting for Dynamic Scene

NeurIPS 2025

Jianing Chen, Zehao Li, Yujun Cai, Hao Jiang, Chengxuan Qian, Juyuan Kang, Shuqin Gao, Honglong Zhao, Tianlu Mao, Yucheng Zhang.

πŸŽ– Academical Services

  • Reviewer of IEEE Transactions on Circuits and Systems for Video Technology (TCSVT), IEEE Transactions on Multimedia (TMM), IEEE International Conference on Multimedia & Expo (ICME 2025), ICCV 2025, NeurIPS 2025, AAAI 2026, ICASSP 2026.