Design of Adjustable Square-Shaped 2D IIR Filters

Figure 6

(a) Frequency response of a square-shaped filter with orientation 𝜑=3𝜋/8 and 𝑝=1.6 (bandwidth 𝜔₀=0.625≅0.2𝜋); (b) contour plot of this filter; (c), (d) frequency response and contour plot of one oriented filter; (e), (f) frequency response and contour plot for a square-shaped filter with 𝜑=𝜋/3 and 𝑝=1 (bandwidth 𝜔₀=1≅0.318𝜋).

(a)

(b)

(c)

(d)

(e)

(f)