Distributed multimedia systems

Multimedia systems will allow professionals worldwide to collaborate more effectively and to travel substantially less. But for multimedia systems to be effective, a good systems infrastructure is essential. In particular, support is needed for global and consistent sharing of information, for long-distance, high-bandwidth multimedia interpersonal communication, greatly enhanced reliability and availability, and security. These systems will also need to be easily usable by lay computer users. \ud In this paper we explore the operating system support that these multimedia systems must have in order to do the job properly

Security and blockchain convergence with internet of multimedia things : current trends, research challenges and future directions

The Internet of Multimedia Things (IoMT) orchestration enables the integration of systems, software, cloud, and smart sensors into a single platform. The IoMT deals with scalar as well as multimedia data. In these networks, sensor-embedded devices and their data face numerous challenges when it comes to security. In this paper, a comprehensive review of the existing literature for IoMT is presented in the context of security and blockchain. The latest literature on all three aspects of security, i.e., authentication, privacy, and trust is provided to explore the challenges experienced by multimedia data. The convergence of blockchain and IoMT along with multimedia-enabled blockchain platforms are discussed for emerging applications. To highlight the significance of this survey, large-scale commercial projects focused on security and blockchain for multimedia applications are reviewed. The shortcomings of these projects are explored and suggestions for further improvement are provided. Based on the aforementioned discussion, we present our own case study for healthcare industry: a theoretical framework having security and blockchain as key enablers. The case study reflects the importance of security and blockchain in multimedia applications of healthcare sector. Finally, we discuss the convergence of emerging technologies with security, blockchain and IoMT to visualize the future of tomorrow's applications. © 2020 Elsevier Lt

Voice and Video Capacity of a Secure Wireless System

Improving the security and availability of secure wireless multimedia systems is the purpose of this thesis. Specifically, this thesis answered research questions about the capacity of wireless multimedia systems and how three variables relate to this capacity. The effects of securing the voice signal, real-time traffic originating foreign to a wireless local area network and use of an audio-only signal compared with a combined signal were all studied. The research questions were answered through a comprehensive literature review in addition to an experiment which had thirty-six subjects using a secure wireless multimedia system which was developed as part of this thesis effort. Additionally, questions related to the techniques for deploying wireless multimedia system including the maturity and security of the technology were answered. The research identified weaknesses in existing analytical and computer models and the need for a concise and realistic model of wireless multimedia systems. The culmination of this effort was the integration of an audio-video system with an existing research platform which is actively collecting data for the Logistics Readiness Branch of the Air Force Research Laboratory

Exploring The Effects Of Multimedia Content On A Question And Answer System

Online Question and Answer (Q&A) websites have been a part of the Internet for many years, the most well-known being Yahoo! Answers. These websites allow us to ask and answer questions with other Internet users around the world, utilizing one of the Internet\u27s greatest strengths: information sharing. In the past, this sharing was restricted to primarily text-based content, and previous research has been almost solely devoted to these text-based Q&A systems. This research includes topics such as improving text-based question quality, and methods for finding the best text-based answer. Now, new Q&A systems such as Jelly have recently been released that utilize multimedia, including images, audio, or video for questions and/or answers. These new multimedia features were not part of previous text-based research, and the objective of this project is to fill that research void: how does the use of multimedia in a question affect the odds of receiving the correct answer? Our findings will not only affect this previous Q&A research on question quality and forwarding, but also reveal new security and privacy concerns. To perform our research, we created several different types of multimedia questions, spanning many different topics. We then studied how users answered each question, using our custom MultiQuery website to facilitate the experiment. This website is unique to Q&A in that it allows for many different multimedia question types, not simply text. Once the experiment was completed, we analyzed the results and determined if and to what degree multimedia use in a question improves or worsens the quality of answers; both overall and for each specific topic of questions. We found that multimedia did in fact have a beneficial effect, especially with images, showing a higher answer rating and correctness percentage for most multimedia types. We also found many security and privacy risks from integrating multimedia into a Q&A website, including loss of privacy through image sharing and voice recognition, as well as security dangers to Q&A system owners through illegal, malicious, or explicit uploaded multimedia content. Our analysis and discussion will help future multimedia Q&A systems as they seek to implement the most effective forms of multimedia, will aid future research into multimedia question quality and forwarding algorithms, and will provide recommendations for safer Q&A security practices that account for multimedia