… open problems in digital watermarking. In the second part we introduces an overview of
watermarking in frequency domain. The general properties for frequency domain as well as …

… Most of watermarking techniques [6-8], the watermark will be embedded into the frequency
domain instead of the spatial domain for the robustness of the watermarking mechanism. The …

… Frequency Domain Techniques embed a watermark by modifying the transform domain …
This paper surveys various frequency domain watermarking schemes available in literature …

… does not provide successful recovery of watermark. Thus, in this paper the various techniques
of digital image watermarking, depending upon spatial and frequency domain techniques …

… One of the important issues of watermarking is the robustness subject to lossy … the watermarked
image. In this paper, a technique of hiding the watermark in the middle frequency portion …

… In this paper we present a new approach for image hiding based on a frequency domain
technique. The proposed method having good PSNR (Peak Signal to Noise Ratio) value that …

… secure watermarking technique, in the frequency domain. Our … S-box in a watermarking
scheme to make our technique more … The proposed non-blind digital watermarking technique …

… In this paper, a watermarking technique based on a combination of … watermarking technique
has been presented that a multipurpose genetic algorithm is used. In this optimal technique, …

… A DCT domain watermarking technique based on the frequency masking of … first
frequencydomain watermarking scheme. After that a lot of watermarking algorithms in frequency …

… watermarking techniques can be selected. Most of the present work in the area of digital
watermarking is inspired by the manipulating the frequency domain of the multimedia objects. In …