针对道路损伤检测中细长裂缝和小目标识别难题,提出新型网络提升精度与效率。
StripRFNet: A Strip Receptive Field and Shape-Aware Network for Road Damage Detection
- 设计分层结构:通过大核注意力、条带感受野与高分辨率特征增强形状与细长裂纹感知。
- 在RDD2022中文子集上,F1、mAP50、mAP50:95分别提升4.4、2.9、3.4个百分点。
- 适合智能巡检、城市道路养护等需要实时高精度损伤识别的应用场景。
完善的道路网络对实现可持续发展目标(SDG)11至关重要。路面损伤不仅威胁交通安全,也阻碍可持续城市发展。然而,由于损伤形状多样、细长裂缝(高长宽比)难以捕捉,以及小尺度损伤识别误差率高,准确检测仍具挑战。为此,我们提出StripRFNet,一种包含三个模块的新型深度神经网络:(1) 形状感知模块(SPM),通过多尺度特征聚合中的大分离核注意力(LSKA)增强形状判别;(2) 条带感受野模块(SRFM),采用大条带卷积与池化以捕获细长裂缝特征;(3) 小尺度增强模块(SSEM),利用高分辨率P2特征图、专用检测头与动态上采样提升小目标检测性能。在RDD2022基准测试中,StripRFNet超越现有方法。在中文子集上,其F1-score、mAP50、mAP50:95分别较基线提升4.4、2.9、3.4个百分点;在全数据集上,取得80.33%最高F1-score,优于CRDDC'2022参与者与ORDDC'2024 Phase 2结果,同时保持高效推理速度。结果表明,StripRFNet在精度与实时性上均达当前最优,为智能道路维护与可持续基础设施管理提供有力工具。
原文摘要 · Abstract (English)
Well-maintained road networks are crucial for achieving Sustainable Development Goal (SDG) 11. Road surface damage not only threatens traffic safety but also hinders sustainable urban development. Accurate detection, however, remains challenging due to the diverse shapes of damages, the difficulty of capturing slender cracks with high aspect ratios, and the high error rates in small-scale damage recognition. To address these issues, we propose StripRFNet, a novel deep neural network comprising three modules: (1) a Shape Perception Module (SPM) that enhances shape discrimination via large separable kernel attention (LSKA) in multi-scale feature aggregation; (2) a Strip Receptive Field Module (SRFM) that employs large strip convolutions and pooling to capture features of slender cracks; and (3) a Small-Scale Enhancement Module (SSEM) that leverages a high-resolution P2 feature map, a dedicated detection head, and dynamic upsampling to improve small-object detection. Experiments on the RDD2022 benchmark show that StripRFNet surpasses existing methods. On the Chinese subset, it improves F1-score, mAP50, and mAP50:95 by 4.4, 2.9, and 3.4 percentage points over the baseline, respectively. On the full dataset, it achieves the highest F1-score of 80.33% compared with CRDDC'2022 participants and ORDDC'2024 Phase 2 results, while maintaining competitive inference speed. These results demonstrate that StripRFNet achieves state-of-the-art accuracy and real-time efficiency, offering a promising tool for intelligent road maintenance and sustainable infrastructure management.
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