Color image watermarking based on quaternion Fourier transform and improved uniform log-polar mapping
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- 作者：Junlin Ouyanga ; b ; yangjunlin0732@163.com" class="auth_mail" title="E-mail the corresponding authorAuthor Vitae ; Gouenou CoatrieuxcAuthor Vitae ; Beijing ChendAuthor Vitae ; Huazhong ShuaAuthor Vitae
- 关键词：Color image watermarking ; Log-polar mapping ; Phase correlation ; Quaternion discrete Fourier transform
- 刊名：Computers & Electrical Engineering
- 出版年：2015
- 出版时间：August 2015
- 年：2015
- 卷：46
- 期：Complete
- 页码：419-432
- 全文大小：2806 K
文摘
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A robust blind color image watermarking scheme is proposed.
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An improved uniform log-polar mapping method is used to resist geometric attacks.
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A dual watermark is embedded into quaternion discrete Fourier transform domain.
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The holistic embedding manner rather than block-based achieves better robustness.