a$)$ The matrix I below represents a $7$ x $7$ image patch and S is a $3\backslash$times $3$

structuring element.

$1=0000000011110001111000011$

i$)$ Using the given structuring element S$,$ erode image patch I. ii Using the

given structuring element S$,$ dilate image patch I. iii Using the given

structuring element S$,$ apply morphological opening on image patch I. b$)$

The images shown in Figure $-$ Q$1$ below are obtained after a number of

operations applied to the original image which is shown in $($a$).$ Figure $-$ Q$1$

In a random order, the five operations are: $(1)$ erosion with horizontal line,

$(2)$ thresholding, $(3)$ dilation with vertical and horizontal lines, $(4)$

superimposing boundary of remaining objects on original and $(5)$ erosion

with vertical line. Match the operation with the correct image from the

above $($b to f$).$ c$)$ State three important properties of human vision in

terms of brightness and colour. Briefly state the functions of rod and cone