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This paper proposes a new image watermarking scheme based on Generalized Singular Value Decomposition (GSVD). This image watermarking method embeds the principal components of watermark image into the host image using a specific scaling factor to control the imperceptibility and robustness aspects. Using this strategy, the GSVD-based image watermarking has ability to avoid the false positive problem...
Digital video watermarking is a technique developed to help in copyright protection of video files. Digital video files can be easily copied and shared among many people on the Internet. So, it's extremely necessary to protect the copyright and ownership right of the video files with the help of digital watermarking. In this paper, we are presenting the comparative study of different video watermarking...
Digital watermarking, the technology of embedding special information into multimedia data, is a topic that has recently gained increasing attention all over the world. The watermark of digital images, audio, video, and other media products in general has been proposed for resolving copyright ownership and verifying the integrity of content. The paper first introduced the definition and basic framework...
In this paper, we present a new key generation model for image hashing using neural network, which does not embed any data into the content but is able to extract meaningful data from target image. This model trains artificial neural network to assign predefined code and uses this trained artificial neural network weight and the coordinates of the selected feature sub blocks of target image as keys...
Digital watermarking technology is a frontier research field, and it serves an important role in information security. According to the analysis of the definition and basic characteristics of digital watermarking technology, the system model of digital watermarking is given. The system consists of two modules which are watermark embedding module and watermark detection and extraction module. In view...
Among the newly explored research areas of digital watermarking, various types of data embedding technologies for vector graphics have drawn more and more attention. The features of vector graphics on the data expression and use were analyzed. The requirements of watermarking for vector graphics are discussed. Utilizing the characteristics of vector graphics, an adaptive classification method is proposed,...
This paper proposes an audio watermark embedding and extraction algorithm based on fast Fourier transform (FFT). This algorithm makes full use of human auditory system (HAS) characteristic, embeds watermarking information into the phase coefficient of audio signal after FFT. The experimental results show that the audio watermarking generated with the proposed algorithm are inaudible and robust characteristics...
With rapidly growing interest in ways to hide information, a large number of schemes have been proposed for watermarks and other information in digital pictures, video, audio and other multimedia objects. In an attempt to overcome this problem, watermarking has been suggested in the literature as the most effective means for copyright protection and authentication. The main focus of this thesis is...
In order to protect the copyright of digital productions, a novel watermarking algorithm based on feature points and singular value decomposition (SVD) is presented. By introducing the SIFT's key points matching and geometric distortion estimation, the attacked watermarked image can be corrected and the watermark synchronization is realized. In this way, the feature regions detected by the Harris...
In this paper, a new wavelet-based copyright proving scheme is proposed. The original image is not required for watermark verification. Moreover, the proposed scheme does not introduce any visual quality degradation into the original image; however, a feature is extracted from the original image and mixed with the watermark to generate a secret key. This secret key is registered for verification....
A digital image watermarking algorithm based on Fourier domain is proposed. This algorithm calculates an Invariant Centroid of the image and uses it as the origin of logarithm polar mapping (LPM). Then two-dimensional Discrete Fourier Transform (DFT) is performed on the LPM image. And then the amplitude of intermediate frequency is used as the watermarking embedding domain. In order to enhance the...
As an important component of passive media forensics (PMF), content-based copy detection (CBCD) is appropriate for identifying piracy of digital content and preventing falsified evidence. In this paper, we propose a novel and efficient CBCD scheme for identifying different altered versions of original images. We employ singular value decomposition (SVD) and block partition to improve the robustness...
This paper proposes a blind audio watermarking scheme for marking multiple copyright owners. The problem of interference between each watermark is solved by scrambling technology. Experimental results show good transparency and robustness of the scheme. The watermarking extraction procedure depends on the private key of specific copyright owner, which guarantees the security of the multi-watermarking...
In this paper Berkeley wavelet transform (BWT) based watermarking is described. BWT is a two-dimensional triadic wavelet transform. In order to achieve copyright protection, the proposed scheme embeds watermark into host image. The efficiency of the watermarking scheme is supported with the help of experimental results.
In this paper, a new audio watermarking algorithm is proposed to accomplish both copyright protection and content authentication with localization. Compared to the conventional algorithms, the feature of the proposed algorithm is that only an encrypted watermark is embedded in the approximate wavelet coefficients based on the instantaneous mixing model of the independent component analysis (ICA) system...
Day to day growth of multimedia technology draws great attention for security. Digital images can be easily altered with software. This problems demand copyright protection and ownership verification. Digital watermarking is proposed as one of the ways to accomplish this, in which Digital watermarks are generally embedded into digital images in a manner that make the watermark invisible to a human...
Digital watermarking is an efficient and promising approach to protect intellectual property rights of digital media. In this paper, a new scheme of robust audio watermarking based on Fractional Fourier transform (FRFT) domain for copyright protection is proposed, which utilizes the idea that FRFT can be considered as a rotation in time-frequency joint domain. Test results for imperceptibility of...
A wavelet based robust image watermarking scheme in which a binary image is embedded in the horizontal and vertical quadrants of a wavelet transformed image is proposed. The algorithm exploits the inter-coefficients relationship within a DWT block of a predetermined size. Only one wavelet coefficient is perturbed slightly in order to embed a single bit of the watermark and also to produce a watermarked...
As an important means of information security and copyright protection, digital watermarking technology has been extensive researched and widely applied; it proves data's ownership or integrity by embedding secret information into raw data, thus achieves the purpose of copyright protection and information security. Based on the analysis and research of wavelet transformation, this study achieves to...
Many image watermarking methods have been proposed over the last decade; however, most of them only focus single or two purposes, verification of copyright and integrity. This paper proposed a multipurpose watermarking method based on blind vector quantization (BVQ) and there are three purposes, copyright protection, integrity verification, and distinguish between malicious and non-malicious manipulations,...
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