$0$ The image in Fig. $5\mathrm{.}29($h$)$ was obtained by inverse$-$fillering the image in Fig. $5\mathrm{.}29(g),$ which is a blurred image that, in addition, is corrupted by additive Gaussian noise. The blurring itself is corrected by the inverse filter, as is evident in Fig. $5\mathrm{.}29($h$).$ However, the restored image has a strong streak pattern that is not apparent in Fig, $5\mathrm{.}29(g)[$for example, compare the area of constant white in the top right of Fig. $5\mathrm{.}29(g)$ with the corresponding are in Fig. $5\mathrm{.}29($h$)|.$ Explain how this pattern originated.