A Marine Object Detection Algorithm Based on SSD and Feature Enhancement

Table 1

Performance of sea urchin recognition under different test models with or without feature enhancement.

Model	Input size	(4th channel)	AP (%)
SSD		NO	73.4
ISSD		Sobel operator 2 directions	82.9
		Prewitt operator 2 directions	82.1
		Prewitt operator 4 directions	82.3
		Prewitt operator 8 directions	82.3
		Prewitt operator 16 directions	83.1
		Laplace operator unidirectional	82.4