1.西南林业大学大数据与智能工程学院,云南 昆明 650224
2.西南林业大学林学院,云南 昆明 650224
陈文柯(1999- ),男,西南林业大学大数据与智能工程学院硕士生,主要研究方向为深度学习和语义分割。
李乐成(1996- ),男,西南林业大学林学院博士生,主要研究方向为深度学习、交通预测和计算机视觉。
刘国玺(1996- ),男,西南林业大学林学院博士生,主要研究方向为路面病害检测、森林资源监测和计算机视觉。
黄苾(1982- ),女,西南林业大学大数据与智能工程学院副教授,主要研究方向为业务过程、大数据挖掘与应用。
代飞(1982- ),男,西南林业大学大数据与智能工程学院教授、博士生导师,主要研究方向为软件工程、服务计算、人工智能。daifei@swfu.edu.cn
收稿:2026-01-30,
修回:2026-05-15,
录用:2026-05-29,
网络首发:2026-07-27,
纸质出版:2026-06-15
移动端阅览
陈文柯,李乐成,刘国玺等.基于RT PSPNet的路面条状修补实时语义分割研究[J].智能科学与技术学报,2026,08(02):237-249.
Chen Wenke,Li Lecheng,Liu Guoxi,et al.Real-time semantic segmentation of strip mending based on RT PSPNet[J].Chinese Journal of Intelligent Science and Technology,2026,08(02):237-249.
陈文柯,李乐成,刘国玺等.基于RT PSPNet的路面条状修补实时语义分割研究[J].智能科学与技术学报,2026,08(02):237-249. DOI: 10.11959/j.issn.2096-6652.ZNKX26016.
Chen Wenke,Li Lecheng,Liu Guoxi,et al.Real-time semantic segmentation of strip mending based on RT PSPNet[J].Chinese Journal of Intelligent Science and Technology,2026,08(02):237-249. DOI: 10.11959/j.issn.2096-6652.ZNKX26016.
路面病害中的条状修补检测是路面智能养护的关键技术之一。现有基于深度学习的语义分割模型在此任务中普遍存在模型参数量大、推理速度慢、细节特征丢失等问题,难以同时满足精度与实时性要求。针对上述问题,提出了一种轻量化高精度的实时语义分割模型——RT PSPNet。该模型在PSPNet基础上进行了多维改进:首先,对ResNet50主干进行深度与通道数的结构化剪枝,得到浅层轻量ResNet,在显著减少参数量的同时保留更多细节特征;其次,设计轻量化小型金字塔池化模块(CPPM)替代原PPM,减少池化分支并引入逐深度卷积,以提升特征提取效率;最后,引入多尺度特征融合机制与多分割头复合损失函数,增强模型对细长目标的完整分割能力与训练稳定性。实验结果表明,在自建条状修补数据集上,RT PSPNet相比原PSPNet在分割精度(mIoU)上提升7.06个百分点,参数量减少96.4%,计算量降低76.1%,推理速度达到147 fps,结合混合精度加速策略后可达258 fps,为基准模型的8.6倍。与当前多种主流及轻量化先进模型相比,RT PSPNet在分割精度、推理速度与模型轻量化3个方面表现出综合的领先优势。RT PSPNet的模型代码和权重已在GitHub上供免费下载使用。
The detection of strip mending in pavement diseases provides crucial technical support for intelligent road maintenance. Existing deep learning-based semantic segmentation models often suffer from issues such as large model parameters
slow inference speed
and loss of detailed features in strip mending detection tasks
making it difficult to balance accuracy and real-time performance. To address these challenges
RT PSPNet
a lightweight and high-precision real-time semantic segmentation model
was proposed. Based on PSPNet
RT PSPNet incorporated multi-dimensional improvements. Firstly
structured pruning was applied to the ResNet50 backbone in terms of depth and channel number
resulting in a shallow lightweight ResNet that significantly reduced parameters while preserving more detailed features. Secondly
a lightweight compact pyramid pooling module (CPPM) was designed to replace the original PPM
which reduced pooling branches and introduced depth-wise convolutions to further enhance feature extraction efficiency. Finally
a multi-scale feature fusion mechanism and a multi-head composite loss function were introduced to improve the model's ability to segment slender targets completely and enhance training stability. Experimental results on a self-built strip mending dataset show that RT PSPNet improves the segmentation accuracy (mIoU) by 7.06 percentage points compared to the original PSPNet
while reducing the parameter count by 96.4%
computational cost by 76.1%
and achieving an inference speed of 147 fps
and reaching 258 fps while using a mixed precision speeding strategy
which is 8.6 times that of the baseline model. Compared with many mainstream and lightweight state-of-the-art models
RT PSPNet demonstrates comprehensive advantages in accuracy
speed
and model light-weighting. RT PSPNet's code and weights are available for free accessing and downloading on GitHub.
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