Fig. 9
From: Side-scan sonar underwater target segmentation using the BHP-UNet
Comparison of the detection results of the four models. The upper image in a shows a target image obtained from the port side, with the direction of 150° east of north and 15 m to the bottom, and the lower image in a is a target image obtained from the starboard side, with the direction of 30° west of north and 30 m to the bottom; b is the annotation map; the segmentation results of the four models FCN, UNet, DeepLabv3+ and BHP-UNet are shown from (c) to (f)