Reversible watermarking using priority embedding through repeated application of integer wavelet transform

  • Authors:

  • Sambaran Bandyopadhyay;Ruchira Naskar;Rajat Subhra Chakraborty

  • Affiliations:

  • Department of Computer Science and Engineering, Institute of Engineering and Management, Kolkata, India;Department of Computer Science and Engineering, Indian Institute of Technology, Kharagpur, India;Department of Computer Science and Engineering, Indian Institute of Technology, Kharagpur, India

  • Venue:
  • InfoSecHiComNet'11 Proceedings of the First international conference on Security aspects in information technology
  • Year:
  • 2011

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Abstract

Digital Watermarking is a well-known technique for digital content protection. Reversible Watermarking techniques are a special class of watermarking techniques whereby after the watermark has been extracted, the original content can be retrieved without any distortion. In this paper we present a novel high capacity reversible watermarking technique for grayscale images, based on repeated application of integer wavelet transform. The process is performed after determining a priority of the different image pixels to be used for watermark embedding. Our experimental results fare favourably when compared to other state-of-the-art reversible watermarking techniques of similar principle.