Image Edge Detection by Global Thresholding Using Riemann–Liouville Fractional Integral Operator

Table 5

The statistical comparison for PSNR parameter with the competitors on BSD500.

PSNR (dB)
BSD image no.	Prewitt	Sobel	Canny	FGTED
189080	17.21255	17.21302	17.22229	17.21321
42049	17.97196	17.97413	17.98742	17.97416
118035	19.91756	19.91801	19.92993	19.91838
163014	18.78931	18.7844	18.78903	18.7848
135069	23.97576	23.97446	23.98405	23.97474
189011	20.67956	20.68491	20.69077	20.68498
189080	20.97487	20.97869	20.98875	20.97871