High capacity robust data hiding system based on BPCS and IWT

  • Authors:

  • Silvia Torres-Maya;Mariko Nakano-Miyatake;Hector Pérez-Meana

  • Affiliations:

  • SEPI, Mechanical and Electrical Engineering School, National Polytechnic Institute, Mexico D.F., Mexico;SEPI, Mechanical and Electrical Engineering School, National Polytechnic Institute, Mexico D.F., Mexico;SEPI, Mechanical and Electrical Engineering School, National Polytechnic Institute, Mexico D.F., Mexico

  • Venue:
  • MUSP'06 Proceedings of the 6th WSEAS international conference on Multimedia systems & signal processing
  • Year:
  • 2006

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Abstract

In this paper, an image steganography system is proposed, in which the data hiding (embedding) is realized in bit planes of subband wavelets coefficients obtained using the Integer Wavelet Transform (IWT). To increase data hiding capacity while keeping the imperceptibility of the hidden data, the replaceable IWT coefficient areas are defined by a complexity measure used in the Bit-Plane Complexity Segmentation (BPCS). The proposed system shows a high data hiding capacity (more than 2 bpp in many case), while keeping a high fidelity of stegoimage (more than 35 dB of PSNR). To make the proposed system robust enough to some distortion caused by non-ideal communication channel, we introduce an Error Control Coding to the system, which can reduce the Bit Error Rate (BER) of extracted hidden data when the stegoimage receive some channel distortion.