DeepMine-Mamba: Mitigating Information Dilution in Mamba-Based State Space Models for Document Image Binarization

• URL: http://arxiv.org/abs/2606.08781v2
• Date: Sun, 14 Jun 2026 17:13:40 GMT
• Title: DeepMine-Mamba: Mitigating Information Dilution in Mamba-Based State Space Models for Document Image Binarization
• Abstract summary: Document image binarization aims to separate foreground text from degraded backgrounds while preserving thin, broken, and low-contrast strokes.<n>DeepMine-Mamba is a Mamba-based binarization framework equipped with a novel Anti-Dilution Gate.<n>Experiments show that DeepMine-Mamba achieves competitive overall performance, with strong average FM and Fps across benchmark years.
• Score: 0.3262230127283452
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Document image binarization aims to separate foreground text from degraded backgrounds while preserving thin, broken, and low-contrast strokes. Although deep learning methods have improved binarization performance, most existing approaches rely on convolutional, transformer-based, or generative architectures, while Mamba-based state space models remain largely unexplored for this task. In this work, we investigate Mamba-based feature propagation and observe that direct state-space propagation may dilute weak foreground cues during long-range modeling, especially faint ink traces, fragmented characters, and boundary-sensitive stroke details. To address this problem, we propose DeepMine-Mamba, a Mamba-based binarization framework equipped with a novel Anti-Dilution Gate that estimates propagation-induced feature changes and selectively restores stroke-sensitive local responses while suppressing unnecessary background enhancement. Experiments on DIBCO/H-DIBCO benchmarks under a strict leave-one-year-out protocol show that DeepMine-Mamba achieves competitive overall performance, with strong average FM and Fps across benchmark years. Ablation results further show that the Anti-Dilution Gate is the key component for mitigating propagation-induced foreground dilution and improving stroke preservation.

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