Copyright Of Media Research Articles

Deep learning-based image watermarking technique with hybrid DWT-SVD

ABSTRACT In digital media copyright protection, image watermarking topologies afford a promising solution. But the robustness of watermarking methods should be considered. Therefore, a robust image watermarking technique has been proposed to show better robustness against rotation attacks and other issues in watermarking. In this work, the Deep Belief Network (DBN) is trained by the Bear Smell Search Algorithm (BSSA) during the first phase. The second phase is the embedding phase, which utilizes the hybrid transform domain of Discrete Wavelet Transform and Singular Value Decomposition (DWT-SVD). After embedding, the extraction is performed with the help of a Back Propagation Neural Network (BPNN). The experiments are conducted on four kinds of host images such as Barbara, Peppers, Person and Lena. Experimental results proved that the superiority of our proposed method achieving the state-of-the-art accuracy.

Shifting digital media ecologies and how copyright law should adjust and adapt to journalism

Digital Age misappropriation and plagiarism of published online news content by some South African media proprietors are negatively affecting professionalism and integrity in journalism. Such infringements invariably lead to great tension, harmful competition patterns and dwindling revenues. Frequently, digital news misappropriation creates factual distortions, impairing the democratic functions of journalism and healthy national discourse motivated by legitimate public interest considerations. A 2019 Reuters Institute Digital News Report revealed that, globally, South Africans spend the greatest number of hours browsing online, with 36% of the population enjoying sharing news content, while 40% enjoy commenting on news via social media or news websites. While the Digital Age has generated many forms of active players in journalism, this paper is limited to digital infringement conflicts and contestations between accountable and established media proprietors or competitors. This qualitative contribution proposes that media proprietors collectively seek an alternative dispute resolution approach to copyright infringements through a comprehensive ‘Media Arbitration Copyright Infringements Code’ with incorporated ‘Hot News Misappropriation Doctrine’ provisions to regulate the conduct of the media and to address proliferating digital infringements. The Media Code should also guide the proposed ‘Media Copyright Tribunal’ operating within a commercial arbitration framework in dispute adjudication and resolution. This paper argues that the Media Code with the Misappropriation Doctrine is a more viable approach for addressing media copyright disputes because it largely protects facts contained in published news content. Furthermore, a Media Code that is drafted addressing media copyright digital infractions using the ethical benchmarks set by the ‘Press Code of Ethics and Conduct for South African Print and Online Media’ editorial guidelines interpreted through a flexible informal commercial arbitration framework that expedites dispute resolution is desirable. This paper is largely concerned with the court’s findings in Moneyweb (Pty) Limited v Media 4 Limited and Another, and the fact that it took about three years for the dispute to be resolved. Moreover, this paper argues that the current Copyright Act 98 of 1978 is less effective in dealing with the ethical quandary faced by journalism in the Digital Age.

Construction of Digital Media Copyright System Based on CAD Technology Under the Background of Internet of Things+

Computer-Aided Design and Applications is an international journal on the applications of CAD and CAM. It publishes papers in the general domain of CAD plus in emerging fields like bio-CAD, nano-CAD, soft-CAD, garment-CAD, PLM, PDM, CAD data mining, CAD and the internet, CAD education, genetic algorithms and CAD engines. The journal is aimed at all developers and users of CAD technology to ptovide CAD solutions for various stages of design and manufacturing. The journal publishes all about Computer-Aided Design and Computer-Aided technologies.

The Color Image Digital Watermarking Algorithm Based on Coordinate Transformation and Quaternion Fourier Transform

With the rapid development of information technology and Internet technology, people can easily exchange and transmit digital information, which not only brings convenience to people's work and life, but also brings rampant piracy of digital media. In the face of the temptation that pirated digital media can obtain huge benefits, some people are desperate to steal digital media works without copyright and sell and spread them at will. In this case, digital media copyright protection and anti-theft version authentication are very important measures to solve the current problems, and digital watermarking(DW) technology is an important method of digital media copyright protection and authentication, so it is more and more concerned and studied by researchers. This paper mainly studies the color image DW algorithm based on coordinate transformation and quaternion Fourier transform, including quaternion representation of color image, Fourier transform analysis, log polar transformation, watermark embedding and watermark extraction. Experimental results show that in the noise range, the smaller the compression ratio is, the more complete the watermark information can be extracted. When the image compression ratio reaches 80%, the watermark information can be completely extracted.

Design of a Hybrid Digital Watermarking Algorithm with High Robustness

With the development of the Internet, storage and transmission technologies such as printers and scanners, digital multimedia products are rapidly transmitted through the Internet broadcasting, multimedia works becoming easy to obtain and illegally tampering and copying. The copyright of media works urgently needs to be protected. As an important information security scheme, digital watermarking technology provides a powerful solution to the protection of multimedia works. In this paper, we propose an image digital watermarking algorithm combining discrete wavelet transform, discrete cosine transform and matrix singular value decomposition and new scrambling technique. Furthermore, to improve the robustness of the algorithm, grayscale scrambling and pseudo magic square transform are used. To evaluate our proposed algorithm, we realize the simulation based on Python 3.7. All the simulation results show that our proposed algorithm has strong imperceptibility and robustness.

A Robust Digital Watermarking Algorithm Based on Finite-Set Discrete Radon Transform Tight Frame

Digital watermarking technology plays a powerful role in the effective protection of digital media copyright, image authentication, image sharing, image information transmission and other fields. Driven by strong demand, digital image watermarking technology has aroused widespread research interest and has gradually developed into one of the most active research directions in information science. In this paper, we present a novel robust digital watermarking algorithm based on discrete radon transform tight frame in finite-set (FDRT). FDRT of the zero mean image is a tight frame, the frame boundary A = B = 1, the dual of the frame is itself. The decomposition and reconstruction of the FDRT tight frame will not cause the phenomenon of image distortion. The embedding of hidden watermark is to add a weak signal to the strong background of the original image. Watermark extraction is to effectively identify the embedded weak signal. The feasibility of the watermarking algorithm is analyzed from two aspects of information hiding and robustness. We select the independent Gaussian random vector as the watermark series, and the peak signal-to-noise ratio (PSNR) as the visual degradation criterion of the watermark image. Basing the FDRT compact stand dual operator, we derived the relationship among the strength parameter, square sum of watermark series, the PSNR. Using Checkmark system, the simulation results show that the algorithm is robust enough to some very important image processing attacks such as lossy compression, MAP, filtering, segmentation, edge enhancement, jitter, quadratic modulation and general geometric attack (scaling, rotation, shearing), etc.

IEEE Access Special Section Editorial: Latest Advances and Emerging Applications of Data Hiding

Data hiding is the science and art of imperceptibly embedding some secret data, e.g., marks or messages, into a host media. The secret data are detected and extracted at a receiving end for various purposes. Data hiding has received tremendous research efforts during the past decade from both academia and industry for a diverse range of applications such as media copyright protection, content authentication, digital rights management, media system monitoring, covert communications, and so on.

Watermarking-Based Blind QoS Assessment for Wireless Image Communication

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 image communication. First, a compressed-domain watermarking scheme is proposed. Each 8×8 block in a JPEG compressed image is first processed by entropy decoding, and then the parity of the number of non-zero alternating current (AC) coefficients in each quantized discrete cosine transform (DCT) block is modified to embed the watermark. Second, the performances of the proposed watermarking scheme have been tested. Finally, the proposed watermarking scheme is applied to estimate the QoS of an image communication link based on the assessment factor which is associated with the errors between the extracted watermark and the original. Experimental results show the proposed scheme can evaluate the QoS of wireless image communication channels exactly without increasing the bit rate transmission. Moreover, the quality of the carrier image has not been affected. 

Transport and retention of Escherichia coli in a mixture of quartz, Al‐coated and Fe‐coated sands

AbstractTransport and retention of Escherichia coli through the mixture of quartz, Al‐coated and Fe‐coated sands was examined using column experiments to investigate the effect of geochemical heterogeneity on bacteria transport. The first set of the experiments was performed in quartz, Al‐coated and Fe‐coated sand mixtures (coated sand: 0, 5, 10, 25, 50, 100%) to examine the influence of positively‐charged sand grains on bacteria transport. The second experiments were carried out to observe the impact of pH (range 6·74–8·21) on bacteria transport in the mixture of quartz 50% and Fe‐coated sand 50%. The third experiments were conducted to analyse the effect of ionic strength (0, 50, 100, 200 mM) on bacteria transport in the mixture of quartz 50% and Al‐coated sand 50%. The first experiments show that bacterial mass recoveries were in the range of 3·6–43·4%, decreasing nonlinearly as the content of Al‐ and Fe‐coated sands increased. In the second experiments, the bacterial mass recoveries were in the range of 35·5–79·2%, increasing linearly as the solution pH increased. In the third experiments, the mass recovery was 3·4% at 0 mM. As the ionic strength increased to 50mM, the mass recovery decreased to 0%. When the ionic strength increased further to 100 and 200 mM, no bacterial mass was recovered as in the case of 50 mM. It indicates that in the mixed medium of quartz 50% and Al‐coated sand 50% both positive (increment of bacterial adhesion) and negative (decrement) effects of ionic strength may be counterbalanced, minimizing the impact of ionic strength on the bacterial adhesion. This study helps to understand the role of metal oxides and solution chemistry in the transport of bacteria in geochemically heterogeneous media Copyright © 2008 John Wiley & Sons, Ltd.

Transparent system for digital media copyright protection in mobile business

At present, in mobile business, the secure environment in the terminal of users has not been embedded, many cryptology-based methods can not be directly used to protect the copyright of digital media. Under this situation, a transparent system based on water-mark for digital right management and digital copyright protection is proposed in this paper. The transparent system is called WDRM (watermark-based digital rights management) and transparent to users. Its core is WDRM Agent. In this paper, system inner model and procession are designed in detail at first, including the registration, the downloading, the super distribution, and the cooperation. Because the watermark embedding and the extraction algorithms are the kernel in this architecture, we also discuss how to choose and design the algorithms. Then we establish a package for all algorithms in WDRM Agent.