Adaptive hiding scheme based on VQ-indices using commutable codewords

Authors:
Chinchen Chang;Chiachen Lin;Junbin Yeh
Affiliations:
Department of Information Engineering and Computer Science, Feng Chia University, Taiwan, China;Department of Computer Science and Information Management, Providence University, Taiwan, China;Department of Computer Science and Information Engineering, National Chung Cheng University, Taiwan, China
Venue:
CIS'05 Proceedings of the 2005 international conference on Computational Intelligence and Security - Volume Part II
Year:
2005

Citing 2
Cited 0

An adaptive steganography for index-based images using codeword grouping

PCM'04 Proceedings of the 5th Pacific Rim conference on Advances in Multimedia Information Processing - Volume Part III
Secure spread spectrum watermarking for multimedia

IEEE Transactions on Image Processing

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Abstract

Hiding secret message in an image has received significant attention that it will not arise attackers’ suspicion. Recently, VQ-based compression domain is frequently employed. Although some hiding schemes are VQ-based compression domain, their hiding capacities are limited. To increase the hiding capacity, this paper applies codewords grouping concept to design an adaptive capacity hiding scheme. Based on our scheme, more bits can be embedded into single VQ index only if its degradation caused by replacing other codeword is less than the predefined threshold. The advantages of this proposed scheme are the higher capacity exploration on secret embedding, and acceptable stability on the display of stego-images.