A new data hiding scheme for small blocks of twelve pixels on binary images by module approach

Authors:
Phan Trung Huy;Nguyen Hai Thanh;Le Quang Hoa;Do Van Tuan
Affiliations:
Hanoi University of Science and Technology, Hanoi, Vietnam;Ministry of Education and Training, Vietnam;Hanoi University of Science and Technology, Hanoi, Vietnam;Hanoi College of Commerce and Tourism, Hanoi, Vietnam
Venue:
ACIIDS'13 Proceedings of the 5th Asian conference on Intelligent Information and Database Systems - Volume Part I
Year:
2013

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Abstract

Color and binary images are popular subjects for data hiding. In this paper we propose a method to controlling quality of hiding secret data in binary images by using small blocks of 12 pixels with a restriction that in each block at most two pixels are changed to embed 6 secret bits in case it is successful. The method uses the Z2-module Z$_{\rm 2}^{\rm 6 }$of integers modulo 2 and this shows the way to overcome the limit (12,6)2 which can not reached by error correcting block codes approach. The method presents the way used secret keys for small blocks which remain high safety property of the scheme. The scheme can be modified to control high quality of stego palette images by combining with Optimal Parity Assignment (OPA) approach for hiding secret data in palette images, to prevent from steganalysis.