Design of Adjustable Square-Shaped 2D IIR Filters

Figure 4

(a) Frequency response of a square-shaped filter with orientation 𝜑=𝜋/4 and 𝑝=0.6 (bandwidth 𝜔₀=1.66≅0.53𝜋); (b) contour plot of this filter; (c), (d) frequency responses and contour plots of the two partial oriented filters.

(a)

(b)

(c)

(d)