From: Circular contour retrieval in real-world conditions by higher order statistics and an alternating-least squares algorithm
29
r f
65
78
52
70
42
σ
8
7
6
4
2
E r
1.4 × 10-2
1.1 × 10-6
6.2 × 10-10
2.6 × 10-14
1.4 × 10-16