Complexity / 2020 / Article / Fig 3

Research Article

A Marine Object Detection Algorithm Based on SSD and Feature Enhancement

Figure 3

(a) The image of underwater sea urchins; (b) the image of Sobel operator 2-direction edge detection; (c) the image of Laplace operator single-direction edge detection; (d) the image of Prewitt operator 2-direction edge detection; (e) the image of Prewitt operator 4-direction edge detection; (f) the image of Prewitt operator 8-direction edge detection; and (g) the image of Prewitt operator 16-direction edge detection.
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