The binary phase-only filter digital watermarking embeds the phase information of the discrete Fourier transform of the image into the corresponding magnitudes for better image authentication. The paper proposed an approach of how to implement watermark embedding by quantizing the magnitude, with discussing how to regulate the quantization steps based on the frequencies of the magnitude coeffic...

This paper presents a novel scheme to blindly estimate the quality of an image communication link by means of an unconventional use of digital watermarking. The watermarking technique is usually employed for digital media copyright protection and authenticity verification. However, watermarking is here adopted as a method to provide a blind assessment of the quality of service (QoS) in wireless...

In this paper, a novel approach to image indexing using content-based watermarking is presented. The proposed system uses color image segmentation and watermarking in order to facilitate content-based indexing, retrieval and manipulation of digital images and image regions. A novel segmentation algorithm is applied on reduced images and the resulting segmentation mask is embedded in the image u...

Watermarking, which belong to information hiding field, has seen a lot of research interest recently. Digital watermarking is a technique providing embedded copyright information in images. It is used for content protection, copyright management, content authentication and tamper detection. Digital watermarking algorithms were proposed using spatial domain and transform domain techniques. The t...

While formal definitions and security proofs are well established in some fields like cryptography and steganography, they are not as evident in digital watermarking research. A systematic development of watermarking schemes is desirable, but at present, their development is usually informal, ad hoc, and omits the complete realization of application scenarios. This practice not only hinders the...

Digital media offer several distinct advantages over analog media, such as high quality, ease of editing, and ease of processing operations such as compression and high fidelity copying. Digital data is commonly available through digital TV broadcast, CD, DVD, and computing devices such as personal computers. The ease by which a digital media object can be duplicated and distributed has led to ...

Digital media is the need of a people now a day as the alternate of paper media. As the technology grown up digital media required protection while transferring through internet or others mediums. Watermarking techniques have been developed to fulfill this requirement. This paper aims to provide a detailed survey of all watermarking techniques specially focuses on image watermarking types and i...

The rapid growth in Internet and communication technology has facilitated an escalation in the exchange of digital multimedia content. This has resulted in an increase in copyright infringement, which has led to a greater demand for more robust copyright protection mechanisms. Digital watermarking is a means of detecting ownership and illegal use of digital products. This paper presents an appr...

Medical image security can be enhanced using the reversible watermarking technique, it allows us to embed the relevant information with the image, which provides confidentiality, integrity and authentication by embedding RSA encrypted digital signature with the image. This paper discusses the need for reversible watermarking techniques and security related problems in medical images. Here we ar...

Digital watermarking is a useful solution for digital rights management systems, and it has been a popular research topic in the last decade. Most watermarking related literature focuses on how to resist deliberate attacks by applying benchmarks to watermarked media that assess the effectiveness of the watermarking algorithm. Only a few papers have concentrated on the error-resilient transmissi...