This paper proposes a novel method for watermarking gray scale images in spatial domain by modifying the least significant bits of the pixels in the image. The embedding process creates a watermarked image with hidden information that in future can proclaim its ownership details. Data to be embedded is integrated in the image selectively on a subset of pixels using a rule that replaces the LSB’...

In most watermarking schemes for copyright protection, a seller always knows the embedded watermark identifying a buyer. However, it incurs both repudiation issue and framing issue. To solve these problems, many watermarking protocols have been proposed based on watermarking schemes in the encrypted domain. In this paper, we enhance an existing watermarking scheme and discuss public key cryptos...

We propose a watermarking scheme based on the multi-channel watermarking framework, which is mainly used to resist geometric attacks. This watermarking scheme generates watermarking templates from one image transform domain which is obtained after DWT (Discrete wavelet transform) and DFT (Discrete Fourier transform) transformation to one of image channels and then embeds these watermarking temp...

This paper presents the infectious watermarking model (IWM) for the protection of video contents that are based on biological virus modeling by the infectious route and procedure. Our infectious watermarking is designed as a new paradigm protection for video contents, regarding the hidden watermark for video protection as an infectious virus, video content as host, and codec as contagion medium...

The information is in present in form of digital media. Digital watermarking was acquainted to provide the copy right protection and owners’ authentication. A digital watermarking is secret information that is embedded inside an image. The digital watermarking for video an effective method to protect the video copyright. Digital video watermarking is the process embedding digital information in...

In this paper, we present a scheme for embedding data in copies (color or monochrome) of predominantly text pages that may also contain color images or graphics. Embedding data imperceptibly in documents or images is a key ingredient of watermarking and data hiding schemes. It is comparatively easy to hide a signal in natural images since the human visual system is less sensitive to signals emb...

A variety of image watermarking schemes have been proposed using orthogonal transformations, projections, and coding techniques to embed imperceptible watermarks into images. Analytical studies of the watermarking problem have typically been based on studying the performance limits of these known algorithms. In contrast, this paper formalizes the watermarking problem in an “algorithm independen...

It has been widely recognized that gathering data accounts for more than 80 per cent of the cost of any GIS project. Software and hardware costs are decreasing, but not datasets. In the analog era, unauthorized copy of the datasets was difficult to made, requiring not only access to them but also specialized equipment and procedures. Fast Internet connections and digital datasets threaten the d...

a watermarking scheme for grayscale image isproposed based on a family of the chaotic maps and discretecosine transform. jacobian elliptic mapis employed to encrypt ofwatermarked logo. piecewise nonlinear chaotic map is also usedto determine the location of dct coefficients for the watermarkembedding. the purpose of this algorithm is to improve theshortcoming of watermarking such as small key s...

Digital watermarking is a technique for embedding information in to cover media to prove ownership. It became very important in the number of application areas such as copyright protection, fingerprinting, broadcast monitoring, and medical application. During the last several years, various watermarking techniques have been proposed by different authors. Wavelet based watermarking is gaining mo...