13,102 research outputs found
Semantic multimedia remote display for mobile thin clients
Current remote display technologies for mobile thin clients convert practically all types of graphical content into sequences of images rendered by the client. Consequently, important information concerning the content semantics is lost. The present paper goes beyond this bottleneck by developing a semantic multimedia remote display. The principle consists of representing the graphical content as a real-time interactive multimedia scene graph. The underlying architecture features novel components for scene-graph creation and management, as well as for user interactivity handling. The experimental setup considers the Linux X windows system and BiFS/LASeR multimedia scene technologies on the server and client sides, respectively. The implemented solution was benchmarked against currently deployed solutions (VNC and Microsoft-RDP), by considering text editing and WWW browsing applications. The quantitative assessments demonstrate: (1) visual quality expressed by seven objective metrics, e.g., PSNR values between 30 and 42 dB or SSIM values larger than 0.9999; (2) downlink bandwidth gain factors ranging from 2 to 60; (3) real-time user event management expressed by network round-trip time reduction by factors of 4-6 and by uplink bandwidth gain factors from 3 to 10; (4) feasible CPU activity, larger than in the RDP case but reduced by a factor of 1.5 with respect to the VNC-HEXTILE
Socially Beneficial Metaverse: Framework, Technologies, Applications, and Challenges
In recent years, the maturation of emerging technologies such as Virtual
Reality, Digital twins, and Blockchain has accelerated the realization of the
metaverse. As a virtual world independent of the real world, the metaverse will
provide users with a variety of virtual activities that bring great convenience
to society. In addition, the metaverse can facilitate digital twins, which
offers transformative possibilities for the industry. Thus, the metaverse has
attracted the attention of the industry, and a huge amount of capital is about
to be invested. However, the development of the metaverse is still in its
infancy and little research has been undertaken so far. We describe the
development of the metaverse. Next, we introduce the architecture of the
socially beneficial metaverse (SB-Metaverse) and we focus on the technologies
that support the operation of SB-Metaverse. In addition, we also present the
applications of SB-Metaverse. Finally, we discuss several challenges faced by
SB-Metaverse which must be addressed in the future.Comment: 28 pages, 6 figures, 3 table
Enabling Technologies for Web 3.0: A Comprehensive Survey
Web 3.0 represents the next stage of Internet evolution, aiming to empower
users with increased autonomy, efficiency, quality, security, and privacy. This
evolution can potentially democratize content access by utilizing the latest
developments in enabling technologies. In this paper, we conduct an in-depth
survey of enabling technologies in the context of Web 3.0, such as blockchain,
semantic web, 3D interactive web, Metaverse, Virtual reality/Augmented reality,
Internet of Things technology, and their roles in shaping Web 3.0. We commence
by providing a comprehensive background of Web 3.0, including its concept,
basic architecture, potential applications, and industry adoption.
Subsequently, we examine recent breakthroughs in IoT, 5G, and blockchain
technologies that are pivotal to Web 3.0 development. Following that, other
enabling technologies, including AI, semantic web, and 3D interactive web, are
discussed. Utilizing these technologies can effectively address the critical
challenges in realizing Web 3.0, such as ensuring decentralized identity,
platform interoperability, data transparency, reducing latency, and enhancing
the system's scalability. Finally, we highlight significant challenges
associated with Web 3.0 implementation, emphasizing potential solutions and
providing insights into future research directions in this field
The Metaverse: Survey, Trends, Novel Pipeline Ecosystem & Future Directions
The Metaverse offers a second world beyond reality, where boundaries are
non-existent, and possibilities are endless through engagement and immersive
experiences using the virtual reality (VR) technology. Many disciplines can
benefit from the advancement of the Metaverse when accurately developed,
including the fields of technology, gaming, education, art, and culture.
Nevertheless, developing the Metaverse environment to its full potential is an
ambiguous task that needs proper guidance and directions. Existing surveys on
the Metaverse focus only on a specific aspect and discipline of the Metaverse
and lack a holistic view of the entire process. To this end, a more holistic,
multi-disciplinary, in-depth, and academic and industry-oriented review is
required to provide a thorough study of the Metaverse development pipeline. To
address these issues, we present in this survey a novel multi-layered pipeline
ecosystem composed of (1) the Metaverse computing, networking, communications
and hardware infrastructure, (2) environment digitization, and (3) user
interactions. For every layer, we discuss the components that detail the steps
of its development. Also, for each of these components, we examine the impact
of a set of enabling technologies and empowering domains (e.g., Artificial
Intelligence, Security & Privacy, Blockchain, Business, Ethics, and Social) on
its advancement. In addition, we explain the importance of these technologies
to support decentralization, interoperability, user experiences, interactions,
and monetization. Our presented study highlights the existing challenges for
each component, followed by research directions and potential solutions. To the
best of our knowledge, this survey is the most comprehensive and allows users,
scholars, and entrepreneurs to get an in-depth understanding of the Metaverse
ecosystem to find their opportunities and potentials for contribution
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