A New Method of Image Steganography Using 7th Bit of a Pixel as Indicator by Introducing the Successive Temporary Pixel in the Gray Scale Image

Pseudocode 2

Retrieval of the Message.

(1)	S = Read stego.tif image      %Read the stego image in S matrix
(2)	[row, col] = size (S);         %Find row and column of the stego image
(3)	load N;              %Load the message length
(4)	k = 1;               %Initialize the value of k by 1
(5)	m = 0;              %Initialize m matrix to zero
(6)	Repeat i = 1: row
(7)	Repeat j = 1: col
(8)	if k < N
(9)	m (k) = 2nd bit of S, i.e. (S (i, j),2);
(10)	m (k + 1) = 2nd bit of the next pixel of S, i.e.(S (i, j) +1, 2);
(11)	k = k + 2;
(12)	end
(13)	end
(14)	end
(15)	m;
(16)	M = reshape (m,8,[]);
(17)	Convert M into a character stream;