Adaptive image steganography based on optimal embedding and robust against chi-square attack
A real-life requirement motivated this case study of secure covert communication. Steganography is a technique used to transfer hidden information in an imperceptible manner. We proposed a novel approach of substitution technique of image steganography. The proposed method is flexible on size of sec...
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Main Authors: | , |
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Format: | Article |
Language: | English |
Published: |
Asian Network for Scientific Information
2011
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Subjects: | |
Online Access: | http://eprints.utm.my/id/eprint/28668/1/OmidZanganeh2011_AdaptiveImageSteganographyBasedonOptimalEmbedding.pdf http://eprints.utm.my/id/eprint/28668/ http://dx.doi.org/10.3923/itj.2011.1285.1294 |
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Summary: | A real-life requirement motivated this case study of secure covert communication. Steganography is a technique used to transfer hidden information in an imperceptible manner. We proposed a novel approach of substitution technique of image steganography. The proposed method is flexible on size of secret message and allows us to embed a large amount of secret messages as well as maintaining good visual quality of stego-image. Using this method, message bits are embedded into uncertain and higher LSB layers, resulting in increased imperceptible and robustness of stego-image. Results show that the proposed algorithm provides large embedding capacity without losing the imperceptibility of the stego-image. The algorithm is also robust against Chi-square attack. |
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