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arXiv · 2412.10338

XYScanNet: A State Space Model for Single Image Deblurring

Hanzhou Liu·Chengkai Liu·Jiacong Xu·Peng Jiang·Mi Lu
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Abstract

Deep state-space models (SSMs), like recent Mamba architectures, are emerging as a promising alternative to CNN and Transformer networks. Existing Mamba-based restoration methods process visual data by leveraging a flatten-and-scan strategy that converts image patches into a 1D sequence before scanning. However, this scanning paradigm ignores local pixel dependencies and introduces spatial misalignment by positioning distant pixels incorrectly adjacent, which reduces local noise-awareness and degrades image sharpness in low-level vision tasks. To overcome these issues, we propose a novel slice-and-scan strategy that alternates scanning along intra- and inter-slices. We further design a new Vision State Space Module (VSSM) for image deblurring, and tackle the inefficiency challenges of the current Mamba-based vision module. Building upon this, we develop XYScanNet, an SSM architecture integrated with a lightweight feature fusion module for enhanced image deblurring. XYScanNet, maintains competitive distortion metrics and significantly improves perceptual performance. Experimental results show that XYScanNet enhances KID by $17\%$ compared to the nearest competitor.

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Hanzhou Liu, Chengkai Liu, Jiacong Xu, Peng Jiang, Mi Lu. 2024-12-13. XYScanNet: A State Space Model for Single Image Deblurring. https://arxiv.org/abs/2412.10338

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