DCT-Based Watermarking for Color Images via Two-Dimensional Linear Discriminant Analysis

Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 253)

Abstract

In this paper, we propose a watermarking algorithm based on Discrete Cosine Transform (DCT) using Two-dimensional Linear Discriminant Analysis (2DLDA) for color images. At first, the color image is converted into the YIQ color space and then transformed into the frequency domain by DCT. During the embedding stage, two watermarks of reference and logo are embedded into the Q component. Then, watermark extraction is done by 2DLDA from the Q component based on the frequency domain of DCT. By considering the Human Visual System (HVS), experimental results have shown that the watermark can be correctly extracted and better robustness is provided after various image attacks.

Keywords

Two-dimensional linear discriminant analysis (2DLDA) Watermarking Discrete cosine transform (DCT) YIQ color space 

Notes

Acknowledgments

This research is supported in part by the National Science Council, Taiwan under the grant of NSC 101-2221-E-130-026.

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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  1. 1.School of Defense Science, Chung Cheng Institute of TechnologyNational Defense UniversityTaoyuanTaiwan
  2. 2.Department of Electronic EngineeringMing Chuan UniversityTaoyuanTaiwan
  3. 3.Department of Electrical and Electronic Engineering, Chung Cheng Institute of TechnologyNational Defense UniversityTaoyuanTaiwan

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