Fuzzy Methods in Nonlinear Signal Processing: Part I—Theory - Nonlinear Signal and Image Processing: Theory, Methods and Applications - page 65

Vector median
FVM

0.3

σ = 0.4

0.25

0.2

0.15

0.1

0.05

0

2 4 6 8 10 12 14 16 18 20

(a)

Vector median
FVM σ = 0.1
FVM σ = 0.2
FVM

0.3

= 0.4

σ

0.25

0.2

0.15

0.1

0.05

0

5 10 15 20 25 30 35

(b)

FIGURE 2.12
Filtering MSE values for the directional signal in Figure 2.11: (a) vector median and fuzzy vector
median with σ = 0 . 4 and (b) vector median and fuzzy vector median with varying spread

parameters.