MATLAB arithenco() create encoded code of type double.

I want to compress image using arithmatic encoding I am trying following code

a=imread('C:\Users\Mitul\Desktop\index.bmp'); % figure,imshow(a)

%converting an image to grayscale I=rgb2gray(a);

%size of the image [m,n]=size(I); Totalcount=m*n;

%function which converts array to vector vec_size = 1; for p = 1:m for q = 1:n newvec(vec_size) = I(p,q); vec_size = vec_size+1; end end

% arithmatic encoding % count of symbols

for i=1:Totalcount

    count(i)=1;
    for j=i+1:Totalcount

        if newvec(i) == newvec(j);
            count(i)=count(i)+1;
        end

    end
end    
% Seq to encode
sym=newvec;

code = arithenco(sym,count);

Here size of code is more then actual size of Image because the datatype of code is double. Give me solution for it

Answer 1

[Walter Roberson]

Solution: write your own arithmetic encoding routine that uses whatever data type you please.