Edge Detector Design Based on LS-SVR

Table 6

2D Σ and Λ criterion value of Canny’s operator from 1D optimal filter.

𝑑	1	2	3	4	5	6	7
𝜎^2	0.33	0.73	1.07	1.50	2.04	2.66	3.34
Σ^2	0.9449	2.2305	3.5903	5.3181	7.4819	9.9642	12.6860
Λ^2	0.0878	0.1977	0.2355	0.2434	0.2455	0.2467	0.2475