Real-Time Color Image Watermarking Based on D-SVD Scheme

  • Cheng-Fa Tsai
  • Wen-Yi Yang
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4872)

Abstract

This investigation presents a robust digital watermarking scheme for copyright protection, called D-SVD. The proposed scheme integrates discrete cosine transform (DCT) with singular value decomposition (SVD). In contrast to traditional methods based on DCT watermarking schemes, in which watermark messages are embedded directly on DCT frequency coefficients, the proposed approach emphasizes that watermark message bit is embedded on the blocks of the DCT coefficient’s singular value within an original color image. Experimental results demonstrate that the quality of watermarked image is robust under compression, noises, filtering and various attacks. In addition, it is observed that the proposed D-SVD algorithm can obtain larger NC and PSNR values than some existing well-known methods, and can successfully resist attacks such as cropping, blurring, reshaping, adding noise and JPEG compression.

Keywords

digital watermarking copyright protection image processing 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Cheng-Fa Tsai
    • 1
  • Wen-Yi Yang
    • 1
  1. 1.Department of Management Information Systems, National Pingtung University of Science and Technology, 91201 PingtungTaiwan

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