For the insulators, M-YOLO v3, D-YOLO v3, and M-YOLO v4 each detected no
more than two insulators, indicating their poor detection performance.
D-YOLO v4 correctly detected the majority of the insulators, with the
exception of those at positions (4) and (9). In contrast, YOLO v5,
Pi-FT, and ours Pi-Index were able to accurately detect all of the
insulators. These results show that Pi-Index is capable of achieving
high detection performance under labeled conditions.
Furthermore, we compared the
details in the detection results of YOLO v5, Pi-FT, and Pi-Index.
Firstly, the detection results at positions (3)-(5) indicate that both
Pi-FT and Pi-Index were significantly more accurate in locating
insulators than YOLO v5. Subsequently, Pi-Index also identified the
unannotated insulator at position (7). This further demonstrated the
effectiveness of the proposed method when applied to unannotated data.
Although D-YOLO v4 was able to detect two unannotated insulators, its
failure to detect some annotated insulators resulted in an overall
detection performance that was inferior to that of the Pi-Index.