A Secure and Efficient Image Transmission Scheme Based on Two Chaotic Maps
Algorithm 1
DPC-D algorithm.
Require: the plain image with the size of , the chaotic matrix with the size of , the dynamic perturbation parameters with the size of and the discrete logarithm value matrix
with the size of .
(1)
Set ;
(2)
Set the sum of the dynamic perturbation parameters to 0;
(3)
Set the row index value used to represent the adopted generator to 0;
(4)
Set the index value used to represent the adopted dynamic perturbation parameters to 0;
(5)
Sort each column of in ascending order, thus get the column index matrix and sorted result ;
(6)
for to 32 do
(7)
;
(8)
end for
(9)
Calculate the row index value of the generator to be used, namely let ;
(10)
for to do
(11)
Sort in ascending order and obtain the row index vector ;
