An Improved Object Detection Method for Underwater Sonar Image Based on PP-YOLOv2

Table 5

Detection precision, recall, and F1-score for different target categories when IoU is equals to 0.5.

Category	Precision	Recall
Ball	96.1	98.5	97.3
Cube	96.0	98.6	97.3
Tyre	89.1	97.2	92.9
Circle cage	89.8	94.2	91.9
Human body	90.5	93.4	91.9
Square cage	88.8	94.1	91.4
Metal bucket	89.6	93.2	91.4
Cylinder	76.5	94.9	84.7
Average	89.6	95.5	92.4