Fast and wide-scale spreading of the image data on the Internet creates great opportunities for illegal access by different intruder kinds. In order to solve the problem of intellectual property protection, digital image watermarking can successfully be used. We extend the previously proposed method of digital 0-bit watermarking based on the embedding of the local maxima into the Fourier transf...

Digital watermarking is emerging as an effective technique to protect copyrights. The propose paper present a novel technique to protect digital data by embedding encrypted watermark. In this technique discrete wavelet transform is used to embed the watermark image. Each pixel value is encrypted by using stream cipher and the key used is same for encryption and decryption. Key security is essen...

The protection and illegal redistribution of digital media has become an important issue in the digital era. This is due to the popularity and accessibility of the Internet now a days by people. This results in recording, editing and replication of multimedia contents. Digital watermarking can be used to protect digital information against illegal manipulations and distributions. Digital waterm...

Advancement in communication medium is producing large volume of digital information which needs to be protected. Watermarking is a technique that is used to hide secret signal into digital signal in a manner that does not reduce overall quality of the original signal. In relation to digital image watermarking, another area that is drawing attention is the multiple watermarking, where more than...

Techniques to establish the authenticity and integrity of digital images are becoming increasly essential over the Intermet. The authentication algorithm should distinguish malicious manipulations from the original watermarked image[1]. Fragile watermarking is recomended for a very sensible image authentication scheme, able to localize the slightest changes occured to the marked image. The frag...

In our digital society, the major source of communication is digital media such as images, video, audio or text. So impersonate and copyright protection of digital content remains an indispensable problem across the globe. To deal with this problem, digital watermarking has become advantageous solution for providing ownership of digital content. In this paper we have developed a robust DCT base...

In some applications, the utility of an image watermarking system is greatly reduced if an attacker is able to extract a watermark from a marked image and re-embed it into an unmarked image. This threat is known as the copy attack. In this paper, we develop an image signature scheme to be used with digital watermarks to create an image watermarking system that is more resistant to this attack. ...

Due to high speed computer networks, the use of digitally formatted data has increased many folds.The digital data can be duplicated and edited with great ease which has led to a need for effectivecopyright protection tools. Digital Watermarking is a technology of embedding watermark withintellectual property rights into images, videos, audios and other multimedia data by a certainalgorithm .Di...

Digital watermarking system is a paramount for safeguarding valuable resources and information. Digital watermarks are generally imperceptible to the human eye and ear. Digital watermark can be used in video, audio and digital images for a wide variety of applications such as copy prevention right management, authentication and filtering of internet content. The proposed system is able to prote...

-Digital watermarking is a technique of embedding pieces of information into digital data such as text, audio, video, and still images that can be detected or extracted later to show authentication about the data. Watermark is hidden information in the image(s) and is so designed that it does not degrade/distort the quality of the image and still keeps the information. Digital watermarking is b...