Real-Time Detection of Insulators and Drop Fuses Based on Improved YOLOv4

Table 2

Anchor boxes for the improved YOLOv4.

Algorithm	Anchor boxes
FCM	(6, 8), (11, 9), (10, 20), (16, 13), (27, 14), (15, 27), (42, 25), (29, 43), (67, 47), (49, 108), (128, 62), (128,175)
K-means	(5, 6), (12, 9), (8, 18), (22, 13), (13, 25), (23, 29) (46, 27), (31, 48), (68, 48), (49, 106), (124, 60), (120,163)
K-means++	(5, 12), (12, 16), (9, 35), (15, 24), (24, 20), (15, 49), (29, 33), (31, 471), (59, 41), (53, 111), (108, 58), (119, 166)
DCN	(7, 8), (8, 13), (12, 13), (12, 17), (15, 17), (13, 24), (33, 28), (23, 48), (41, 43), (39, 55), (54, 44), (45, 102)
SDCN	(9, 9), (12, 24), (22, 14), (27, 43), (46, 37), (71, 49), (46, 98), (112, 49), (71, 154), (164, 59), (102, 105), (137, 180)