LDH-Net: Luminance-based Deep Hybrid Network for Document Image De-shadowing

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Fan Yang, Kunchi Li, Nanfeng Jiang, Yun Wu, Ziyu Li, Da-Han Wang

Published: 2025, Last Modified: 25 Mar 2026Image Vis. Comput. 2025EveryoneRevisionsBibTeXCC BY-SA 4.0
Abstract: Highlights•This paper proposes LDH-Net, a dual-branch luminance-guided network that effectively addresses complex document image shadows while preserving text integrity.•This paper introduces Horizon-Vertical Attention and Dilated Convolution Mamba modules to capture both global dependencies and local details with low computational complexity.•This paper achieves state-of-the-art results across multiple benchmarks and demonstrates strong robustness and efficiency in real-world OCR applications.