… -DCT coefficients [15]. Ali Al-Haj[16] described a combined DWT-DCT digital image
watermarking algorithm that embed the watermark in the first and second level of DWT coefficient …

… Kasmani and Naghsh-Nilchi [15] also combined DWT and DCT to create their robust
digital image watermarking. Aslantas et al. [16] applied intelligent optimisation algorithms into …

… We describe the performance of the combined DWT–DCT–SVD watermarking algorithm.
The gray-level images “Barbara Image” of size \( 512 \times 512 \) as cover image and “Thorax” …

… The robust watermarking approach applied in this work is based on a new combination of
three transform domains; DWT, DCT, and SVD. Note that, before inserting, the watermark is …

… watermarking method in [11]. Singh et al. [47] used a hybrid combination of DWT-DCT-SVD
in which the watermark has been embedded into singular values of the DWT coefficients. A …

… To accomplish this, a combined watermarking strategy consisting of Discrete … DWT-DCT-SVD.
Affixing both the singular values of watermarks, we acquire the transformed watermark. …

… Then, many studies combined DWT with DCT to further improve the performance of watermarking
methods [1, 6, 8, 9, 11, 13, 14, 25, 26, 31]. For example, in [8], three-level DWT is firstly …

… the efficiency of combining DWT and DCT domains, we propose also a reduced DCT-based …
To justify the utility of combining DWT and DCT domains, we propose here a reduced …

… image watermarking. In this work, we proposed a combined DWT+DCT digital image
watermarking … Embedded and extraction watermarking is tested using DWT watermarking method, …