关键词: 数字化车间, MobileNetv2, 实时, 轻量级, 语义分割

Abstract: To meet the real-time demand of manufacturing in the digital workshop,a lightweight semantic segmentation network named Multi Pyramid Pooling Segmentation Network (MPPSNet) that satisfied both accuracy and real-time was proposed,which realized the semantic segmentation for the goal of digital workshop.The improved MobileNetv2 was used as the encoder of semantic segmentation network in MPPSNet,which effectively reduced the amount of network parameters and improved the real-time per-formance of the overall network operation;the multi-pyramid pooling network was used as the decoder of the segmentation network,which could integrate multiple layers of feature information and improve the accuracy of the network.Tests found that the semantic segmentation effect of MPPSNet was better than that of FCN8 and BiSeNet in VOC2012data set.In the self-building object semantic segmentation data set of the digital workshop,the Mean Intersection over Unions (MIoU) of segmenting human,machine tool,and mobile robot of workshop objects reached 71.8% in MPPSNet and the parameter amount of the entire network was 2.55M,which could meet the accurate and real-time requirements of segmenting workshop objects.

Key words: digital workshop, MobileNetv2, real-time, lightweight, semantic segmentation