Digital video watermarking using 3D-DCT and intra-cubic correlation

J. H. Lim, D. J. Kim, H. T. Kim, C. S. Won

Research output: Contribution to journalConference articlepeer-review

21 Scopus citations

Abstract

A digital video watermarking algorithm using 3D-DCT and intra-cubic correlation is proposed. More specifically, we divide the video sequence into non-overlapping image cubes and take a 3D-DCT on each image cube. The coefficients in the frequency domain in the cube are randomly selected and partitioned into two equal sets. Then, by referring the user-defined logo, a small value is added to the coefficients in one set while the same amount is subtracted from those of the other set. By taking the difference of mean values of the two sets in each cube, we can extract the watermark bits embedded into the cube. Collecting all watermark bits and visually inspecting the collected image logo, one can assert the copyright of the video. Experimental results show that we can extract over 90% of the binary logo image for various possible attacks such as MPEG compression, frame-rate changes, format conversion and frame skipping.

Original languageEnglish
Pages (from-to)64-72
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4314
DOIs
StatePublished - 2001
EventSecurity and Watermarking of Multimedia Contents III - San Jose, CA, United States
Duration: 22 Jan 200125 Jan 2001

Keywords

  • Copyright protection
  • Logo image
  • MPEG
  • Three dimensional discrete cosine transform
  • Video watermarking

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