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Soft Computing

, Volume 22, Issue 5, pp 1555–1567 | Cite as

An adaptive hybrid fuzzy-wavelet approach for image steganography using bit reduction and pixel adjustment

  • Imran Shafi
  • Muhammad Noman
  • Moneeb Gohar
  • Awais Ahmad
  • Murad Khan
  • Sadia Din
  • Syed Hassan Ahmad
  • Jamil Ahmad
Focus

Abstract

Transform-based techniques partially address challenges like robustness and the imperceptibility in image steganography. Such approaches, however, increase the memory requirement and reduce the quality of the cover image and hiding capacity. Moreover, the steganography is always coupled with cryptography to strengthen the confidentiality. This paper presents an adaptive hybrid method for image steganography procedure based on bit reduction and pixel adjustment using the fuzzy logic and integer wavelet transform technique. The fuzzy set theory provides powerful tools to represent and process human knowledge in the form of fuzzy if-then rules that can resolve difficulties in image processing arising due to the uncertainty of the data, tasks, and results. We apply a bit reduction algorithm to each byte of the data which are to hide in the cover image. This decreases the memory usage and increases the capacity. The embedding of the input text into the cover image distorts the cover image. Hence, to minimize the visual difference between the cover image and the text embedded image, an optimum pixel adjustment algorithm is applied to the text embedded image. Simulation results demonstrate the effectiveness of our proposed approach.

Keywords

Steganography Watermarking Cryptography Fuzzy logic Integer wavelet transform Optimum pixel adjustment algorithm 

Notes

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2017

Authors and Affiliations

  1. 1.National University of Sciences and TechnologyIslamabadPakistan
  2. 2.Abasyn University, Islamabad CampusIslamabadPakistan
  3. 3.Department of Computer ScienceBahria UniversityIslamabadPakistan
  4. 4.Department of Information and Communication EngineeringYeungnam UniversityGyeongsanRepublic of Korea
  5. 5.Department of Computer ScienceSarhad University of Science and Information TechnologyPeshawarPakistan
  6. 6.School of Computer Science and EngineeringKyungpook National UniversityDaeguRepublic of Korea
  7. 7.University of Central FloridaFloridaUSA
  8. 8.Kohat University of Science and TechnologyKohatPakistan

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