Step 2 - Inverse Run Length Coding

recov_run_length = decod_runLength(recovered_signal);

If the inverse run length is accurate 'recov_run_length' should be equal to 'cell2mat(img_One_D_vector)'. We can check whether the two signals are equal.

sum(cell2mat(img_One_D_vector)-recov_run_length)--------->0

function recovered_img_One_D_vector = decod_runLength(recovered_signal)

recovered_img_One_D_vector =[];

e = 1:size(recovered_signal,2); %vec =[1,2,3,4,5,6,,7,8....]

pix_count_idx_vector = find(rem(e,2)); %odd = [1,3,5,7,9....]

pix_value_idx_vector = find(~rem(e,2)); %even = [2,4,6,8....]

a=1;

while (a<=size(pix_value_idx_vector,2))

for i=1:recovered_signal(pix_count_idx_vector(a))

recovered_img_One_D_vector=[recovered_img_One_D_vector recovered_signal(pix_value_idx_vector(a))];

end

a=a+1;

end

end