Electric Power ›› 2021, Vol. 54 ›› Issue (5): 179-185.DOI: 10.11930/j.issn.1004-9649.202004144

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E-FCNN Based Electric Power Inspection Image Enhancement

BAI Wanrong1, ZHANG Xun1, ZHU Xiaoqin1, LIU Jixiang1, CHENG Qiyu2, ZHAO Yan2, SHAO Jie2   

  1. 1. Gansu Electric Power Research Institute, Lanzhou 730050, China;
    2. Department of Electronic and Information Engineering, Shanghai University of Electric Power, Shanghai 200090, China
  • Received:2020-04-17 Revised:2020-12-16 Published:2021-05-05
  • Supported by:
    This work is supported by National Natural Science Foundation of China (Study of Key Techniques of Image Hashing Based on Salient Feature and Data Compression, No.F020603)

Abstract: For UAV patrol of transmission lines and robot inspection of unattended substations, low image resolution is one of the main problems due to long shooting distance or machine shaking. In order to solve this problem, we propose an edge-aware feedback convolutional neural network (E-FCNN), which not only adds Resnet blocks and feedback mechanism to the conventional super-resolution network to strengthen the ability of feature extraction, but also adds texture information to the edge-aware branch to enhance the image detail. Extensive experiments show that the proposed algorithm is superior to other existing algorithms, both in subjective visual quality and objective evaluation indexes such as peak signal-to-noise ratio. Practically, the proposed algorithm can improve the accuracy of insulator detection in UAV transmission line inspection.

Key words: electric power inspection, super-resolution, image enhancement, convolutional neural network, edge aware