Edge-Based Image Watermarking Method with Weighted Discrete Cosine Transform Coefficients

被引：1
|
作者：
Karakis, Rukiye [1 ]
Gurkahraman, Kali [2 ]
机构：
[1] Sivas Cumhuriyet Univ, Yazihm Muhendisligi Bolumu, Sivas, Turkey
[2] Sivas Cumhuriyet Univ, Bilgisayar Muhendisligi Bolumu, Sivas, Turkey
来源：
2022 30TH SIGNAL PROCESSING AND COMMUNICATIONS APPLICATIONS CONFERENCE, SIU | 2022年
关键词：
image watermarking; edge detection; scaling factor; discrete wavelet transform; discrete cosine transform; DWT;
D O I：
10.1109/SIU55565.2022.9864663
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
In image watermarking, hybrid approaches increase imperceptibility and robustness. Also, a scaling factor is used, which should be optimized when combining the cover image and watermark. In this study, discrete wavelet transform and discrete cosine transform (DCT) were used together. The watermark-edge image was obtained by randomly inserting the watermark on the horizontal, vertical and diagonal edge points of the cover image detected with Sobel. The DCT frequency components of the watermark-edge image were weighted with a generated matrix and combined with the DCT of the cover image. According to the obtained results, the proposed method is imperceptible and robust to various attacks, especially JPEG compression and noise attacks.
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页数：4
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