2. Explain mathematically (with formulations) why the image of Fig. 4.34(b) appears as it does. a b c FIGURE 4.34 (a) Original image. (b) Image obtained by multiplying the phase angle array by 1 in Eq. (4-86) and computing the IDFT. (c) Result of multiplying the phase angle by 0.25 and computing the IDFT. The magnitude of the transform, F(u,v), used in (b) and (c) was the same. 2. Explain mathematically (with formulations) why the image of Fig. 4.34(b) appears as it does. a b c FIGURE 4.34 (a) Original image. (b) Image obtained by multiplying the phase angle array by 1 in Eq. (4-86) and computing the IDFT. (c) Result of multiplying the phase angle by 0.25 and computing the IDFT. The magnitude of the transform, F(u,v), used in (b) and (c) was the same