Q$2.$ a$)$ Discuss the effect of using the structuring element in Fig. $9\mathrm{.}15($c$)$ for boundary extraction, instead of the one shown in Fig. $9\mathrm{.}13($b$).$

b$)$ What would be the effect of using a $3$ x $3$ structuring element composed of all $1$s in the hole filling algorithm of Eq$.(9\mathrm{.}5-2),$ instead of the structuring element shown on Fig. $9\mathrm{.}15($c$)$