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Utilization of HEVC ChaCha20-Based Selective Encryption for Secure Telehealth video conferencing

Computers, Materials & Continua 2022年第1期70卷 831-845页

作者： Osama S.Faragallah Ahmed I.Sallam Hala S.El-sayed Department of Information Technology College of Computers and Information TechnologyTaif UniversityP.O.Box 11099Taif21944Saudi Arabia Department of Computer Science and Engineering Faculty of Electronic EngineeringMenoufia UniversityMenouf32952Egypt Department of Electrical Engineering Faculty of EngineeringMenoufia UniversityShebin El-Kom32511Egypt

Coronavirus(COVID-19)is a contagious disease that causes exceptional effect on healthcare organizationsworldwide with dangerous impact on medical services within the *** of the fast spread of COVID-19,the healthcare facilities could be a big source of disease ***,healthcare video consultations should be used to decrease face-to-face communication between clinician and *** video consultations may be beneficial for some COVID-19 conditions and reduce the need for faceto-face contact with a potentially positive patient without *** conditions are like top clinicians who provide remote consultations to develop treatment methodology and follow-up remotely,patients who consult about COVID-19,and those who have mild symptoms suggestive of the COVID-19 *** consultations are a supplement to,and not a substitute for,telephone *** may also form part of a broader COVID-19 distance care strategy that contains computerized screening,separation of possibly infectious patients within medical services,and computerized video-intensive observing of their intensive care that helps reduce ***,the spread of the COVID-19 virus helps to expand the use of video healthcare consultations because it helps to exchange experiences and remote medical consultations,save costs and health procedures used to cope with the pandemic of the COVID-19 virus,and monitor the progress of treatment plans,moment by moment from a distance with precision,clarity and *** this perspective,this paper introduces a high-efficiency video coding(HEVC)ChaCha20-based selective encryption(SE)scheme for secure healthcare video *** proposed HEVC ChaCha20-based SE scheme uses the ChaCha20 for encrypting the sign bits of the Discrete Cosine Transform(DCT)and Motion Vector Difference(MVD)in the HEVC entropy *** main achievement of HEVC ChaCha20-based SE scheme is encrypting the most sensitive video bits with keeping low

关键词： Telehealth HEVC cahcha20 video conferencing

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DHT-and blockchain-based smart identification for video conferencing

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Blockchain(Research and Applications) 2022年第2期3卷 90-101页

作者： Morteza Alizadeh Karl Andersson Olov Schelen Department of Computer Science Electrical and Space EngineeringLuleåUniversity of TechnologySE-93187SkellefteåSweden

video conferencing applications help people communicate via the Internet and provide a significant and consistent basis for virtual ***,integrity,security,identification,and authentication problems are still *** video conference technologies typically rely on cloud systems to provide a stable and secure basis for executing tasks and *** the same time,video conferencing applications are being migrated from centralized to decentralized solutions for better performance without the need for third-party *** article demonstrates a decentralized smart identification scheme for video conferencing applications based on biometric technology,machine learning,and a decentralized hash table combined with blockchain *** store users'information on a distributed hash table and transactional events on the distributed ledger after identifying users by implementing machine learning ***,we leverage distributed ledger technology's immutability and traceability properties and distributed hash table unlimited storage feature to improve the system's storage capacity and immutability by evaluating three possible *** experimental results show that an architecture based on blockchain and distributed hash table has better efficiency but needs a longer time to execute than the two other architectures using a centralized database.

关键词： video conferencing Blockchain IPFS Decentralized web hosting Machine learning

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Analysis of the Effects of Rainfall Intensity into the Performance of video conferencing

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World Journal of Engineering and Technology 2016年第1期4卷 71-81页

作者： Charles Duhujamahoro Celestin Twizere Patrick Mazimpaka Thierry Ony Shema Nkurunziza Pascal Electrical and Electronics Engineering Department University of Rwanda Butare Rwanda

Attenuation due to rain is an important limitation in the designing of the microwave communication links operating at frequencies above 10 GHz. video conferencing performs over high-speed link via high-speed satellite (WINDS satellite) transmission in the Ka-band which is vulnerable to attenuation due to rain. Using the ITU-R proposed models for the prediction of rain attenuation gives a good estimation for the microwave propagation loss caused by rain for the temperate regions, but it underestimates the rain attenuation prediction for the monthly variation of rain rate by averaging annual rain rate for particular region. This study was carried out at the University of Rwanda/Huye Campus. The rain rates were predicted for 0.01 percentage of time from rainfall data measured during two months of July and August using the RD-80 Joss and Waldvogel Disdrometer. From the data collected and analyzed, compared with ITU-R model, we can see that where Rwanda region is situated in region K, what is different from the obtained results because the data are collected during months that coincide with a dry season.

关键词： Attenuation Rain Rate video conferencing ITU-R Model

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The Use of video conferencing for Persons with Chronic Conditions: A Systematic Review

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E-Health Telecommunication Systems and Networks 2016年第2期5卷 39-56页

作者： Jennifer A. Mallow Trisha Petitte Georgia Narsavage Emily Barnes Elliott Theeke Brian K. Mallow Laurie A. Theeke School of Nursing West Virginia University Morgantown WV USA Sovern Run LLC Albright WV USA

The purpose of this paper is to present a systematic review of studies that used video conferencing (VC) intervention for common chronic conditions. Chronic conditions account for the majority of poor health, disability, and death, and for a major portion of health-care expenditures in the United States. Innovative methods and interventions are needed to enhance care and management, improve access to care, improve patient outcomes, narrow health disparities and reduce healthcare costs. video conferencing could be particularly relevant in improving health, care management, access and cost in the care of chronic illnesses. A comprehensive literature search process guided by the PRISMA statement led to the inclusion of 27 articles measuring video conferencing, at least one chronic illness, and patient outcomes for adults living in a community setting. While VC has been found to be feasible and effective, a low number of randomized controlled trials limit evidence. In addition, studies in this review were not designed to address the question of whether access to care in rural areas is improved through VC. Hence, more research is needed.

关键词： video conferencing Chronic Conditions Outcomes of Care

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Ultra-Lightweight Face Animation Method for Ultra-Low Bitrate video conferencing

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ZTE Communications 2023年第1期21卷 64-71页

作者： LU Jianguo ZHENG Qingfang State Key Laboratory of Mobile Network and Mobile Multimedia Technology Shenzhen 518055China ZTE Corporation Shenzhen 518057China

video conferencing systems face the dilemma between smooth streaming and decent visual quality because traditional video compression algorithms fail to produce bitstreams low enough for bandwidth-constrained *** ultra-lightweight face-animation-based method that enables better video conferencing experience is proposed in this *** proposed method compresses high-quality upperbody videos with ultra-low bitrates and runs efficiently on mobile devices without high-end graphics processing units(GPU).Moreover,a visual quality evaluation algorithm is used to avoid image degradation caused by extreme face poses and/or expressions,and a full resolution image composition algorithm to reduce unnaturalness,which guarantees the user *** show that the proposed method is efficient and can generate high-quality videos at ultra-low bitrates.

关键词： talking heads face animation video conferencing generative adversarial network

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Can video conferencing Be as Easy as Telephoning?—A Home Healthcare Case Study

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E-Health Telecommunication Systems and Networks 2016年第1期5卷 8-18页

作者： Alan Taylor Greg Morris Jennifer Tieman David Currow Michael Kidd Colin Carati Faculty of Medicine Nursing and Health Sciences Flinders University Adelaide Australia

In comparison with almost universal adoption of telephony and mobile technologies in modern day healthcare, video conferencing has yet to become a ubiquitous clinical tool. Currently telehealth services are faced with a bewildering range of video conferencing software and hardware choices. This paper provides a case study in the selection of video conferencing services by the Flinders University Telehealth in the Home trial (FTH Trial) to support healthcare in the home. Using pragmatic methods, video conferencing solutions available on the market were assessed for usability, reliability, cost, compatibility, interoperability, performance and privacy considerations. The process of elimination through which the eventual solution was chosen, the selection criteria used for each requirement and the corresponding results are described. The resulting product set, although functional, had restricted ability to directly connect with systems used by healthcare providers elsewhere in the system. This outcome illustrates the impact on one small telehealth provider of the broader struggles between competing video conferencing vendors. At stake is the ability to communicate between healthcare organizations and provide public access to healthcare. Comparison of the current state of the video conferencing market place with the evolution of the telephony system reveals that video conferencing still has a long way to go before it can be considered as easy to use as the telephone. Health organizations that are concerned to improve access and quality of care should seek to influence greater standardization and interoperability though cooperation with one another, the private sector, international organizations and by encouraging governments to play a more active role in this sphere.

关键词： Telehealth Home Care video conferencing Standards Interoperability

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SHVC, the Scalable Extensions of HEVC,and Its Applications

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ZTE Communications 2016年第1期14卷 24-31页

作者： Yan Ye Yong He Ye-Kui Wang Hendry Inter Digital Communications Inc. Qualcomm Incorporated

This paper discusses SHVC, the scalable extension of the High Efficiency video Coding (HEVC) standard, and its applications in broadcasting and wireless broadband multimedia services. SHVC was published as part of the second version of the HEVC specifi?cation in 2014. Since its publication, SHVC has been evaluated by application standards development organizations (SDOs) for its potential benefits in video applications, such as terrestrial and mobile broadcasting in ATSC 3.0, as well as a variety of 3GPP mul?timedia services, including multi?party multi?stream video conferencing (MMVC), multimedia broadcast/multicast service (MBMS), and dynamic adaptive streaming over HTTP (DASH). This paper provides a brief overview of SHVC and the performance and com?plexity analyses of using SHVC in these video applications.

关键词： HEVC SHVC broadcasting video conferencing video streaming

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Performance Evaluation of an Internet Protocol Security (IPSec) Based Multiprotocol Label Switching (MPLS) Virtual Private Network

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Journal of Computer and Communications 2020年第9期8卷 100-108页

作者： Conrad K. Simatimbe Smart Charles Lubobya Department of Electrical and Electronic Engineering School of Engineering The University of Zambia Lusaka Zambia

This paper evaluates the performance of Internet Protocol Security (IPSec) based Multiprotocol Label Switching (MPLS) virtual private network (VPN) in a small to medium sized organization. The demand for security in data networks has been increasing owing to the high cyber attacks and potential risks associated with networks spread over distant geographical locations. The MPLS networks ride on the public network backbone that is porous and highly susceptible to attacks and so the need for reliable security mechanisms to be part of the deployment plan. The evaluation criteria concentrated on Voice over Internet Protocol (VoIP) and video conferencing with keen interest in jitter, end to end delivery and general data flow. This study used both structured questionnaire and observation methods. The structured questionnaire was administered to a group of 70 VPN users in a company. This provided the study with precise responses. The observation method was used in data simulations using OPNET Version 14.5 Simulation software. The results show that the IPSec features increase the size of data packets by approximately 9.98% translating into approximately 90.02% effectiveness. The tests showed that the performance metrics are all well within the recommended standards. The IPSec Based MPLS Virtual private network is more stable and secure than one without IPSec.

关键词： Multiprotocol Label Switching Internet Protocol Security Virtual Private Network video conferencing Voice over Internet Protocol Jitter End to End Delay

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基于IPv6的视频会议系统中安全的关键技术的研究

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民营科技 2017年第5期 6-6页

作者：张继怀大庆市让胡路区政府

视频会议现已成为现代政府办公、商务合作、科学研究等领域人们沟通交流的新选择,成为应用越来越多的网络多媒体通讯方式。基于IPv6的视频会议系统,阐述其安全相关的关键技术。对H.264,组网协议,组播技术和信息安全等方面进行了研究。

关键词： IPv6 视频会议安全Security video conferencing

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