SMG-Net: A lightweight modular architecture for fine-grained crack segmentation in ancient wooden structures
Tianke Fang, Zhenxing Hui, Zhiying Xie, Peng Yu, Yi Gao, Songdi Shi, Yuanrong He

TL;DR
SMG-Net is a lightweight neural network that improves crack segmentation in ancient wooden structures with high accuracy and efficiency.
Contribution
The paper introduces a novel multi-cooperative perception mechanism for crack segmentation in heritage structures.
Findings
SMG-Net achieved mIoU scores of 81.12% and 87.91% on crack datasets.
The model outperformed U-Net, SegFormer, and Swin-UNet in accuracy and speed.
SMG-Net is parameter-efficient and suitable for low-resource heritage monitoring.
Abstract
To improve the accuracy and efficiency of crack segmentation in ancient wooden structures, we propose a lightweight deep neural network architecture, termed SMG-Net. The core innovation of this model lies in its multi-cooperative perception mechanism. First, the proposed Structure-Aware Cross-directional Pooling (SACP) establishes long-range feature dependencies in multiple orientations, addressing the challenge of coherent recognition for cracks with complex directions. Second, the Multi-path Robust Feature Extraction (MRFE) module enhances the tolerance of the model to noise and blurred edges, thereby improving the discriminative capability of shallow features. Third, the Guided Semantic–Spatial Fusion (GSSFusion) mechanism enables efficient alignment and integration of multi-scale features, ensuring both fine crack details and global structural consistency in segmentation. Extensive…
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Taxonomy
TopicsInfrastructure Maintenance and Monitoring · Masonry and Concrete Structural Analysis · Handwritten Text Recognition Techniques
