This paper addresses the challenges of background interference
computational redundancy
and the difficulty in balancing model accuracy with processing speed in existing photovoltaic module electroluminescence (EL) defect detection methods. We propose an enhanced YOLOv8-based defect detection method
named YOLOv8-LSB
to tackle these issues. Firstly
we introduce the SCConv convolution module into the backbone network
reducing spatial redundancy while improving the extraction of small target features. Secondly
we incorporate the LSK attention mechanism in the neck to effectively mitigate background interference. Additionally
we use the BiFPN structure to enhance multi-scale feature fusion
enabling the model to capture features from various perspectives more effectively. Lastly
we employ Inner-CIoU as the bounding box regression loss function
which improves both regression accuracy and convergence speed. Experimental results show that YOLOv8-LSB achieves 91.2% mAP@0.5 and 170.2 FPS. Compared to the baseline model YOLOv8n
the proposed method improves average accuracy by 2.6 percentage points and FPS by 4.8 frames per second
making it a more real-time and accurate solution for photovoltaic EL defect detection.
DALAL N, TRIGGS B.Histograms of oriented gradients for human detection[C]//2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'05). San Diego, CA, USA, 2005: 886-893.
FELZENSZWALB P, MCALLESTER D, RAMANAN D.A discriminatively trained, multiscale, deformable part model[C]//2008 IEEE Conference on Computer Vision and Pattern Recognition. Anchorage, AK, USA, 2008: 1-8.
GIRSHICK R, DONAHUE J, DARRELL T, et al.Rich feature hierarchies for accurate object detection and semantic segmentation[C]//2014 IEEE Conference on Computer Vision and Pattern Recognition. Columbus, OH, USA, 2014: 580-587.
REN S Q, HE K M, GIRSHICK R, et al.Faster R-CNN: towards real-time object detection with region proposal networks[J]. IEEE transactions on pattern analysis and machine intelligence, 2017, 39(6): 1137-1149.
LIU W, ANGUELOV D, ERHAN D, et al.SSD: single shot MultiBox detector[C]//Computer Vision-ECCV 2016. Amsterdam, Netherlands, 2016: 21-37.
REDMON J, DIVVALA S, GIRSHICK R, et al.You only look once: unified, real-time object detection[C]//2016 IEEE Conference on Computer Vision and Pattern Recognition (CVPR). Las Vegas, NV, USA, 2016: 779-788.
REDMON J, FARHADI A.YOLO9000: better, faster, stronger[C]//2017 IEEE Conference on Computer Vision and Pattern Recognition (CVPR). Honolulu, HI, USA, 2017: 6517-6525.
ZHAO X L, SONG C H, ZHANG H F, et al.HRNet-based automatic identification of photovoltaic module defects using electroluminescence images[J]. Energy, 2023, 267: 126605.
MENG Z Y, XU S Z, WANG L C, et al.Defect object detection algorithm for electroluminescence image defects of photovoltaic modules based on deep learning[J]. Energy science & engineering, 2022, 10(3): 800-813.
CAO Y K, PANG D D, ZHAO Q C, et al.Improved YOLOv8-GD deep learning model for defect detection in electroluminescence images of solar photovoltaic modules[J]. Engineering applications of artificial intelligence, 2024, 131: 107866.
LI Y X, HOU Q B, ZHENG Z H, et al.Large selective kernel network for remote sensing object detection[C]//2023 IEEE/CVF International Conference on Computer Vision (ICCV). Paris, France, 2024: 16748-16759.
LI J F, WEN Y, HE L H.SCConv: spatial and channel reconstruction convolution for feature redundancy[C]//2023 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR). Vancouver, BC, Canada, 2023: 6153-6162.
SU B Y, ZHOU Z, CHEN H Y.PVEL-AD: a large-scale open-world dataset for photovoltaic cell anomaly detection[J]. IEEE transactions on industrial informatics, 2023, 19(1): 404-413.