Table 3. Comparison of accuracy test experimental results on the RSOD data set.

Methods	mAP	AP1	AP2	AP3	AP4
YOLOv5n	81.6	97.8	98.2	83.3	47.1
YOLOv5n+SIoU	82.5	98.5	97.7	82.5	51.4
AS-YOLOv5n	84.9	98.2	97.5	86.8	57.2

There are four categories included in the data set: AP1 (aircraft), AP2 (oil tank), AP3 (overpass), AP4 (playground).