The major source of communication in present world is digital media. As it is quite easy to manipulate a digital media, it becomes essential to protect the digital information by legitimate means. Digital Watermarking has evolved as one of the latest technologies for digital media protection. Many techniques based on spatial and frequency domain have been developed in the recent past and are be...

AbstrAct With the rapid advance in digital network, digital libraries, and particularly WWW (World Wide Web) services, we can retrieve many kinds of images on personal and mobile computer anytime and anywhere. At the same time, secure image archiving is becoming a major research area because the serious concern is raised about copyright protection and authority identification in digital media. ...

Digital watermark technology has been developed quickly during the recent few years and widely applied to protect the copyright of digital image. A digital watermark is the information that is imperceptibly and robustly embedded in the host data such that it cannot be removed. This paper proposes a method based on the independent component analysis (ICA) for the digital image watermarking. The ...

In this paper, we have suggested the spatial domain method for the digital image watermarking for both visible and invisible watermarks. The methods are used for the copyright protection as well as proof of ownership. In this paper we have used spatial domain characteristics of the image where we directly work on the pixel value of the image according to the watermark and calculated different p...

In this paper, we report results from comparative study on various related and relevant aspects of the digital watermarking such as image authentication techniques using fragile watermarking, fuzzy clustering and genetically inspired watermarking techniques for integrity verification. This is carried out with intent to develop an understanding of their working, contained challenges, possible at...

Usual digital signature schemes for image authentication encode the signature in a file separate from the original image, so this process require extra bandwidth to transmit it. Meantime, watermarking is an information hiding sub-discipline that embeds some information into host image. In this paper a joined digital signature and digital watermarking scheme for image authentication is proposed ...

The main goal with this paper is to offer an improved evaluation of some well-known Digital image watermarking techniques. The standard Watermarking methods contain DCT, DWT and Typical SVD which are accustomed to modify a Digital Image. This paper aims at the collaboration of DWT, CZT and modified SVD to generate better results. It helps to meet the robustness and imperceptibility traits of a ...

It is the expansion of internet that has increased the availability & uses of digital data like video, audio, image to the world. Therefore copyright protection of digital data is an important research issue of information security. This paper presents a review of some influential work in the area of digital watermarking technique and main contribution in this field such as categories of digita...