Explain the basic idea behind the Chain Code and the Crack Code

concepts. Illustrate the chain code representation with a diagram. Use

the provided graph paper.

$($b$)$ In FigureQ$4\mathrm{.}1$a an image is given. Its binary representation is given in

Figure Q$4\mathrm{.}1$b$.$ What is the chain code of the binary region related to the

black object in the image by considering $8-$connectedness? Use the

clockwise approach, starting with the indicated pixel.

$($c$)$

What is the crack code of the same region? Use the counter$-$clockwise

approach, starting with the indicated pixel.

$($d$)$ What is the run length coding and when it is used? Briefly explain its

advantages and disadvantages. What is the run code for the binary

image presented in Figure Q$4\mathrm{.}2?$

Figure Q$4\mathrm{.}1$a

$[6$ Marks$]$

$[8$ Marks$]$

$[8$ Marks$]$

$[8$ Marks$]$

Total $[30$ Marks$]$

Page $4$ of $5$

MODULE CODE: $55-702447$

Figure Q$4\mathrm{.}1$b

Figure Q$4\mathrm{.}2$