$5$ Using the thresholding technique demonstrated in Example $3\mathrm{.}7$ and with

reference to the histogram display functions of Example $3\mathrm{.}12,$ manually select and apply a

threshold to the example image pillsetc.png$.$ Compare your result with the adaptive

threshold approaches shown in Examples $3\mathrm{.}15$ and $3\mathrm{.}16.$ Which is better? $($Also$,$ which is

easier?$)$

Repeat this procedure to isolate the foreground items in example images tape.png$,$ coins.png and eight.tif. Note that images require to be transformed to grey scale $($see

Section $1\mathrm{.}4\mathrm{.}1\mathrm{.}1)$ prior to thresholding.