$(15$ p$.)$ As shown on the right, an input image in Figure $($a$)$ could

not be successfully thresholded with a single global threshold due

to non$-$uniform illumination. Figure $($b$)$ shows the result of this

thresholding $($the threshold value was chosen in the valley of the

histogram$).$ Propose and explain another thresholding method to

completely remove the object from the background $($assume that

the non$-$uniform illumination cannot be eliminated in the pre$-$

processing stage$).$

siguic $($a$).$ mput mage

thresholding

riguic $($v$).1$uc resunus