基于改进PSPNet的连铸坯等轴晶带图像分割  

Image Segmentation of Equiaxed Crystal Bands in Continuous Casting Billets Based on Improved PSPNet

作　　者：冯佳丽 肖涵[1,2,3] 徐彪 Feng Jiali;Xiao Han;Xu Biao(Key Laboratory of Metallurgical Equipment and Control Technology,Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081;Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering,Wuhan University of Science and Technology,Wuhan 430081;Precision Manufacturing Institute,Wuhan University of Science and Technology,Wuhan 430081)

机构地区：[1]武汉科技大学冶金装备及其控制教育部重点实验室,湖北武汉430081 [2]武汉科技大学机械传动与制造工程湖北省重点实验室,湖北武汉430081 [3]武汉科技大学精密制造研究院,湖北武汉430081

出　　处：《冶金设备》2023年第6期7-13,79,共8页Metallurgical Equipment

基　　金：国家自然科学基金资助项目(51805382);湖北省重点研发计划项目(2021BAA194)。

摘　　要：为解决连铸坯低倍组织等轴晶带分割因采用传统人工方法精度不高实时性较差的问题,提出一种改进PSPNet网络的连铸坯低倍组织等轴晶带图像分割算法。采用轻量化网络MobileNet-V2替代Resnet作为特征提取主干网络,在网络模型中加入BAM注意力机制,提高了网络的负值特征提取性能,细化了分类结果;同时将MobileNet-V2中的Relu6激活函数替换为H-Swish激活函数,在不增加耗时的前提下提高了分割精度。实验结果显示,该算法的平均像素准确率为89.80%,类别平均交并比为95.25%,图片预测FPS增加了26.2%,图片平均处理速度为15.96ms,图像分割结果细节保留较好,实时性表现良好,适用于连铸坯低倍组织等轴晶带分割任务。To address the issue of low accuracy and poor real⁃time performance of traditional manual methods for segmenting equiaxed crystal bands in continuous casting slabs,an improved PSPNet network⁃based algorithm is proposed.The algorithm replaces ResNet with a lightweight network MobileNet⁃V2 as the main feature extraction backbone,and incorporates the BAM attention mechanism to enhance the negative feature extraction performance of the network and refine the classification results.Additionally,the Relu6 activation function in MobileNet⁃V2 is replaced with the H⁃Swish activation function to improve segmentation accuracy without increasing computational time.Experimental results show that the algorithm achieves an average pixel accuracy of 89.80%,a mean intersection over union of 95.25%,a26.2%increase in image prediction FPS,and an average processing speed of 15.96ms.The algorithm produces fine⁃grained image segmentation results with good real⁃time performance,making it suitable for segmenting equiaxed crystal bands in continuous casting slabs.

关 键 词：等轴晶 连铸坯 低倍组织 语义分割 PSPNet 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]