Watermarking algorithms are used for embedding watermark like patient’s history and doctor’s signature in binary image format into host’s medical image for telemedicine applications. In this work the watermarking of medical image is done in DCT and DWT domains and the performance is evaluated based on PSNR and MSE. From the obtained results it is observed that the watermarking in wavelet domain...

Perceptual watermarking should take full advantage of the results from human visual system (HVS) studies. Just noticeable distortion (JND) gives us a way to model the HVS accurately. In this paper, another very important aspect affecting human perception, visual saliency, is introduced to modulate JND model. Based on the visual saliency’s modulatory effect on JND model which incorporates visual...

Piracy is a big threat to the original contents. This multi-model approach interleaves some frequency domain watermarking strategies to counteract shortcomings of one strategy by the advantages of other. The original image is divided into spatially disjoint blocks. Watermarking is a way of embedding a mark that hides information in a multimedia carrier. Major issues in Image watermarking are to...

In this paper a novel spatial domain multiple watermarking scheme for color Images is proposed. The proposed scheme is of type blind and invisible watermarking. A binary watermark image is permutated using a secret key. The host image is divided into five blocks .Blocks size equals on the size of watermark image. The watermark is a binary image, embedded into five blocks of the host image by al...

Digital image watermarking is one of the most widely used techniques for protection of ownership rights of digital images. Its commercial applications range from copyright protection to digital rights management. However, although there have been numerous new proposed digital image watermarking techniques, most are not sufficiently robust against watermark attacks. With the main objective of fi...

Image watermarking has become an important tool for intellectual property protection and authentication. In this paper a watermarking technique is suggested that incorporates two watermarks in a host image for improved protection and robustness. A watermark, in form of a PN sequence (will be called the secondary watermark), is embedded in the wavelet domain of a primary watermark before being e...

Recent advances in the development of image watermarking algorithms had made a rapid change in the authenticated information resource sharing. Among all techniques of image watermarking and storing watermarked image bits in SRAM (Static Random Access Memory), LFSR (Linear Feedback Shift Register) based image watermarking technique has been proposed in [1], this technique utilizes less design co...

Today’s life internet offers great convenience in transmitting large amount of data in different parts of the world. However, the safety and security of long distance communication remains an issue. In order to solve this problem has led to the increase in the need of copyright protection. The application of Image watermarking in copy control, broadcast monitoring, copyright protection, video a...

Image watermarking technique embeds copyright information (watermark) into host image so as to perform its protection and authentication. Schemes of embedding digital watermark into grayscale images have been researched and developed greatly. However color image is more common in our everyday life and it contains more information than grayscale image and provides information to against the atta...