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2013 | OriginalPaper | Buchkapitel

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

verfasst von : I-Hui Pan, Ping Sheng Huang, Te-Jen Chang

Erschienen in: Information Technology Convergence

Verlag: Springer Netherlands

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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.

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Metadaten
Titel
DCT-Based Watermarking for Color Images via Two-Dimensional Linear Discriminant Analysis
verfasst von
I-Hui Pan
Ping Sheng Huang
Te-Jen Chang
Copyright-Jahr
2013
Verlag
Springer Netherlands
DOI
https://doi.org/10.1007/978-94-007-6996-0_7

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