Papers

Selected first-author work.

Vision-Language & Multimodal Models

DocKylin: A Large Multimodal Model for Visual Document Understanding with Efficient Visual Slimming

Jiaxin Zhang^†, Wentao Yang^†, Songxuan Lai, Zecheng Xie, Lianwen Jin*
^† Equal contribution. ^* Corresponding author.

AAAI, 2025

Paper / Code

Smaller but Better: Unifying Layout Generation with Smaller Large Language Models

P. Zhang, Jiaxin Zhang, J. Cao, H. Li, L. Jin

International Journal of Computer Vision, 133(7), 3891–3917, 2025

Paper / Code

RedundancyLens: Revealing and Exploiting Visual Token Processing Redundancy for Efficient Decoder-Only MLLMs

H. Li, Jiaxin Zhang, W. Liao, D. Peng, K. Ding, L. Jin

Findings of ACL, 2025

Paper / Code

Image Restoration & Enhancement

DocAligner: Automating the Annotation of Photographed Documents through Real-Virtual Alignment

Jiaxin Zhang, P. Zhang, H. Cheng, X. Chen, H. Xu, K. Ding, L. Jin

Pattern Recognition, 2026

Paper / Code

Q-DRFormer: Query-Position Mapping Flow Prediction with Progressive Refinement for Document Rectification

J. Li, Jiaxin Zhang, J. Guo, Q. Zhang, X. Zheng, Q. Yin, W. Zeng

ACM Transactions on Graphics, 46(2), 1–16, 2026

Paper / Code

Enhancing Document Dewarping Evaluation: A New Metric with Improved Accuracy and Efficiency

Jiaxin Zhang, P. Zhang, D. Peng, H. Xu, L. Jin

Pattern Recognition Letters, 195, 51–58, 2025

Paper / Code

OCRGenBench: A Comprehensive Benchmark for Evaluating OCR Generative Capabilities

P. Zhang, H. Xu, Jiaxin Zhang, X. Zheng, G. Xu, Y. Zhang, J. Liu, Z. Yang, W. Zhou, et al.

arXiv 2025

Paper / Code

DocRes: A Generalist Model Toward Unifying Document Image Restoration Tasks

Jiaxin Zhang, Dezhi Peng, Chongyu Liu, Peirong Zhang, Lianwen Jin*

CVPR, 2024

Paper / Code

Appearance Enhancement for Camera-Captured Document Images in the Wild

Jiaxin Zhang, L. Liang, K. Ding, F. Guo, L. Jin

IEEE Transactions on Artificial Intelligence, 5(5), 2319–2330, 2023

Paper / Code

Marior: Margin Removal and Iterative Content Rectification for Document Dewarping in the Wild

Jiaxin Zhang, C. Luo, L. Jin, F. Guo, K. Ding

ACM MM, 2022

Paper / Code

OCR

Text Prior-Guided Cell Alignment with Transformer for Robust Table Structure Recognition

J. Li, Jiaxin Zhang, Q. Yin, Q. Zhang, X. Zheng, W. Zeng, P. Guo

Pattern Recognition, 183, 114832, 2026

Paper / Code

AutoScaler: Self Scale Alignment for Handwritten Mathematical Expression Recognition

W. Yang, Jiaxin Zhang, L. Jin

Pattern Recognition, 2026

Paper / Code

Towards Accurate Readings of Water Meters by Eliminating Transition Error: New Dataset and Effective Solution

Jiaxin Zhang, Daizhen Jia, Chongyu Liu, Dezhi Peng, Bangdong Chen, Xue Gao and Lianwen Jin*

IEEE TIM, 2025

Paper / Code

UPOCR: Towards Unified Pixel-Level OCR Interface

D. Peng, Z. Yang, Jiaxin Zhang, C. Liu, Y. Shi, K. Ding, F. Guo, L. Jin

ICML, 2024

Paper / Code

LEGO: Self-Supervised Representation Learning for Scene Text Images

Y. Ren, Jiaxin Zhang, L. Jin

arXiv 2024

Paper

M6Doc: A Large-Scale Multi-Format, Multi-Type, Multi-Layout, Multi-Language, Multi-Annotation Category Dataset for Modern Document Layout Analysis

H. Cheng, P. Zhang, S. Wu, Jiaxin Zhang, Q. Zhu, Z. Xie, J. Li, K. Ding, L. Jin

CVPR, 2023

Paper / Code

Looking from a Higher-Level Perspective: Attention and Recognition Enhanced Multi-Scale Scene Text Segmentation

Y. Ren, Jiaxin Zhang, B. Chen, X. Zhang, L. Jin

ACCV, 643–659, 2022

Paper