Data Hiding Based on Palette Images Using Weak Bases of Z2-Modules

(1,7,4) Data hiding scheme for searching in hidden text with automata

“…(ii) By the hiding scheme (1,7,4), we obtain directly the hiding scheme (2,14,8) by applying a couple of two consecutive 7-pixel blocks as a 14-pixel block and we can change at most two pixels, each pixel in each subblock, by the way above to hide 8 bits, each 4 bits hide into one sub-block of 7 pixels. With this scheme, we have M S D R 2 = log 2 (1 + 3 · 14 + 32 · 13 · 14/2) = log 2 862 = 9 as the theoretical limit of the number of bits which can be hidden in each 14-block.…”

“…Data hiding [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] is interested in several authors because data hiding can be used for copyright, secret communication, military fields, and hospital, etc. Data hiding is referred to as a process to hide data (representing some information) into cover media.…”

“…Therefore, our proposed scheme is safe from the attacks, because the ratio of changed pixel for data hiding is less than 1/7. This scheme (1,7,4) is directly extended to a (2,14,8) hiding scheme which in its turn shows advantages to resolve the problem matching in hidden secret text in stego-images without a secure environment for end-users. For this purpose, we are using a modification of text matching technique by automata theory.…”

“…The relationship between module and covering code technique in data hiding area is considered in [12][13][14]. The hiding scheme (2,14,8) provides us a suited way to build an algorithm for searching hidden text by automata technique which now exists in several sources [15][16][17][18].…”

“…The hiding scheme (2,14,8) provides us a suited way to build an algorithm for searching hidden text by automata technique which now exists in several sources [15][16][17][18]. In this scheme, we introduce a fuzzy approach to searching hidden text by automata and introduce a hidden text searching technique in stego-images without revealing extracted text using our hiding scheme (2,14,8).…”