How to do ARITHMETIC CODING USING MATLAB CODE

1.Introduction:-

Arithmetic coding is a technique which is used for lossy and lossless data compression.
Here we have used this coding for generation of tag by knowing the probabilities.

2.Problem Statement:-
To generate TAG using the Arithmetic coding for the given probabilities sequence.



3.Program:-
clc;
clear all;
L=0;
U=1;
p1=input('enter probability of a=');
p2=input('Enter probability of b=');
p3=input('Enter probability of c=');
sym i;
for i=1:1:5
 k=menu('select probability','a','b','c');
 switch k
 case 1
 x1=0;
 x2=p1;
 case 2
 x1=p1;
 x2=p1+p2;
 case 3
 x1=p1+p2;
 x2=1;
 end
 Ln=L+((U-L)*x1);
 Un=L+((U-L)*x2);
 L=Ln;
 U=Un;
end
Tag=(L+U)/2


4.How to use this code:-
Here you have to only copy the code to MATLAB and just run it after that you have to give your probabilities values and select sequence from figure window.


5.Output :-

 Figure Window  

                                 

Command Window

                                                   




6.Conclusion -
Here we have successfully generate TAG for Arithmetic coding using the MATLAB.