Computer and Modernization

Previous Articles     Next Articles

RST Invariant Color Image Watermarking Algorithm #br# Based on Quaternion Zernike Moments

  

  1. School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, China
  • Received:2015-03-13 Online:2015-07-23 Published:2015-07-28

Abstract:

In this paper, we propose a RST(Rotation, Scaling, Translation) invariant color image watermarking based on Quaternion Zernike Moments(QZM). Since the normalized
modulus of QZM has rotation, scale and translation invariance, this paper embeds watermarking information in the QZM’s modulus by using the method of dither modulation. This
algorithm can diffuse the error caused by watermark embedding to three component images(red, green, blue). The experiments show that it has good imperceptibility and robust to
geometric attacks, such as rotation, scale and translation.

Key words:  image processing, digital watermarking, quaternion Zernike moments, RST attacks, color image

CLC Number: