Title
Improved Robust DWT-Watermarking in YCbCr Color Space
Abstract
Digital watermarking is an effective way to protect copyright. In this paper, a robust watermarking algorithm based on wavelet transformation is proposed which can confirm the copyright without original image. The wavelet transformation technique is effective in image analyzing and processing. Thus the color-image watermark algorithm based on discrete wavelet transformation (DWT) begins to draw an increasing attention. In the proposed approach, the watermark Encrypt by Arnold transform and the host image is converted into the YCbCr color space. Then its Y channel decomposed into wavelet coefficients and the selected approximation coefficients are quantized and then their least significant bit of the quantized coefficients is replaced by the Encrypted watermark using LSB insertion technique. The experimental results show that watermark embedded by this algorithm is of better robustness and extra imperceptibility and robustness against wavelet compression compared to the traditional embedding methods in RGB color space.
Year
Venue
Field
2012
CoRR
Computer vision,Digital watermarking,Computer science,RGB color space,Watermark,Artificial intelligence,Cascade algorithm,Stationary wavelet transform,Wavelet packet decomposition,Wavelet transform,Wavelet
DocType
Volume
ISSN
Journal
abs/1209.1949
Global journal of Computer Application and Technology (GJCAT), Vol.1, No.3, 2011, Pages 300-304
Citations 
PageRank 
References 
1
0.39
2
Authors
3
Name
Order
Citations
PageRank
Atefeh Elahian110.39
Mehdi Khalili241.88
Shahriar Baradaran Shokouhi392.00