Research Article
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 |
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