Digital images can be easily copied or manipulated by irresponsible persons. The right
property needs to be secured and protected from illegal copies and piracy. Digital …

In this paper, a new robust digital image watermarking algorithm based on Joint DWT-DCT
Transformation is proposed. A binary watermarked logo is scrambled by Arnold cat map and …

Robust and undetectable watermarking scheme is important for copyright protection. This
paper proposes a DWT-DCT-SVD and LWT-DCT-SVD based image watermarking …

To protect the copyright of digital image, this paper proposed a combined Discrete Wavelet
Transform (DWT) and Discrete Cosine Transform (DCT) based watermarking scheme. To …

Image watermarking technique aims at high imperceptibility of the embedded watermark
with minimal distortion in the watermarked images. In frequency-domain, block-based …

Despite the passage of more than 20 years of raising the issue of watermarking by Tirkel, the
researchers are still seeking to provide an approach more resistant than existing solutions …

The performance of differential evolution (DE) algorithm is significantly affected by its
parameters setting that are highly problem dependent. In this paper, an optimal discrete …

Watermarking techniques can be applied in digital images to maintain the authenticity and
integrity for copyright protection. In this paper, scale-invariant feature transform (SIFT) is …

A new SVD based and DCT-DWT oriented watermarking scheme is being proposed. This
paper aims to achieve robustness with high perceptual transparency and low insertion ratio …

In this paper, a robust hybrid watermarking method based on discrete wavelet transform
(DWT), discrete cosine transform (DCT), and scale-invariant feature transformation (SIFT) is …