Security Measure for Image Steganography Based on High Dimensional KL Divergence

Algorithm 1

Input: Payload , Cover image , Stego image

Output: Value of steganographic security measure

1: Initialize target-image ;

2: [m,n]= size of ()

3: calculate gradient using Equ.(11)

4: 

5: while ()

6:   ,

7: end

8: ,

9: for i=1:511

10:  for j=1:511

11:  if //texture pixels

12:   calculate using Equ.(14)

13:   

14:   look for make established

15:   if end

16:   if end

17:   if end

18:   if end

19:   else if //non-texture pixels

20:    

21:    else

22:     

23:     

24:     

25:     

26:    end

27:   end

28:  end

29: end

30: calculate

31: let repeat step 2-30 to get

32: return using Equ.(3).