Journal of Applied Sciences ›› 2016, Vol. 34 ›› Issue (3): 309-316.doi: 10.3969/j.issn.0255-8297.2016.03.008

• Signal and Information Processing • Previous Articles     Next Articles

Adaptive Print-Scan Resilient Image Watermarking Based on Fourier Transform

LIAO Ting, LI Zhi-jiang   

  1. School of Printing and Packaging, Wuhan University, Wuhan 430079, China
  • Received:2016-03-04 Revised:2016-04-04 Online:2016-05-30 Published:2016-05-30

Abstract:

A robust blind watermarking scheme that combines uniform log-polar mapping and perceptual band decomposition of Fourier domain is proposed, which can resist general print-scan attacks. The proposed scheme can guarantee invisibility and increase robustness of the watermark. Perceptual band decomposition that splits the Fourier domain into overlapping sub-bands is used to locate the mid-frequency domain. Uniform log-polar mapping is applied to mid-frequencies in the Fourier domain. Watermark embedding in the mid-frequencies is adaptively controlled by the local spectrum property. Finally, a spatial perceptual mask is used to compensate distortion after the embedded image is inversely transformed back to the spatial domain. Both the theoretical analysis and experimental results show that the proposed scheme is invisible, and robust against general print-scan attacks.

Key words: distortion compensation, digital watermark, print-scan resilient, Fourier transform, imperceptibility

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