$5-$ An image has a dimension of $512\backslash$times $512$ pixels with $65,536$ gray levels, its normalized

histogram can be defined as

a$.($

$)=$

$$

$262,144$

b$.($

$)=$

$$

$512$

c$.($

$)=$

$$

$65,536$

d$.($

$)=$

$$

$256$