The Edge Detectors Suitable for Retinal OCT Image Segmentation

Table 1

Summary of edge detection techniques involved in retinal OCT image segmentation studies.

Principles	Edge detection algorithms	Applications in OCT image analysis	References
Intensity-based	Canny edge detector	To obtain global gradient information	Yang et al. [12]
		To extract global boundary	Shijian et al. [13]
	Two-pass edge detection algorithm	To extract global boundary	Bagci et al. [14]
			Bagci et al. [15]
	Edge-tracking algorithm	To detect ILM	Rossant et al. [16]
	Peak detection method	To detect the easily detected boundary ILM and OS/RPE	Cha and Han [17]
	Gaussian smoothing + Sobel kernel		Lang et al. [18]
Texture-based	EdgeFlow technique	To detect global boundary of retinal OCT image	Niu et al. [19]