Novel gray-scale watermarking algorithm based on QFT

Chi Zhao*, Weijiang Wang, Xiwei Huang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper proposes a novel algorithm of embedding gray-scale watermark image into an RGB host image based on the Quaternion Fourier Transform (QFT). The R, G, B color components are represented respectively by the three imaginary parts of a pure imaginary quaternion and the gray-scale watermark image is inserted into the real part of the carrier image which is transformed by the QFFT. By using the symmetrical characteristic of the real part, we achieve the insertion of the gray-scale watermark image without lose. Experiment results show that the watermarked image with this method has the biggest imperceptibility with the best PSNR when compared with other gray-scale watermarking schemes.

Original languageEnglish
Title of host publication11th International Conference on Control, Automation, Robotics and Vision, ICARCV 2010
Pages1871-1874
Number of pages4
DOIs
Publication statusPublished - 2010
Event11th International Conference on Control, Automation, Robotics and Vision, ICARCV 2010 - Singapore, Singapore
Duration: 7 Dec 201010 Dec 2010

Publication series

Name11th International Conference on Control, Automation, Robotics and Vision, ICARCV 2010

Conference

Conference11th International Conference on Control, Automation, Robotics and Vision, ICARCV 2010
Country/TerritorySingapore
CitySingapore
Period7/12/1010/12/10

Keywords

  • Gray-scale watermark
  • Imperceptbility
  • QFT
  • RGB image

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