DCT-based image watermarking using subsampling

  • Authors:
  • W. C. Chu

  • Affiliations:
  • DoCoMo USA Labs., San Jose, CA, USA

  • Venue:
  • IEEE Transactions on Multimedia
  • Year:
  • 2003

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Abstract

A DCT-based image watermarking algorithm is described, where the original image is not required for watermark recovery, and is achieved by inserting the watermark in subimages obtained through subsampling.