Abstract: “Digital image watermarking is a branch of information hiding in which the ownership information will be hidden in the cover image. Performing digital image watermarking, some important issues such as imperceptibility, robustness, capacity and security should be considered. The strength and weakness of each of these issues depends on the watermark algorithm and also the domain in which the watermark has been hidden. In this research we investigate the role of the different domains used in digital image watermarking and categorize them based on the power of the mentioned issues that each domain potentially and innately offers.”

Keywords: Digital image watermarking, Spatial domains, Transform domains, DFT, DCT