Video applications are now among the most widely used and a daily fact of life for the great majority of Internet users. While presentational video services such as those provided by YouTube and NetFlix dominate video data, conversational videoservices such as video conferencing, multiplayer video gaming, telepresence, tele-learning, collaborative shared environments, and screencasting, as well as visual control systems such as tele-operation or remote-controlled drones, also have significant usage and tremendous potential. With the advent of both mobile networks and cloud computing, we are seeing a paradigm shift, where the computationally-intensive components of these conversational video services are moving to the cloud, and the end user’s mobile device is used as an interface to access the services. By doing so, even mobile devices without high-end graphical and computational capabilities can access a high fidelity application with high-end graphics.
For this special issue, we seek original research papers that report on new approaches, methods, systems, and solutions
that overcome the above shortcomings. Potential topics of interest include, but are not limited to:
• Methods to speed up video coding and video streaming at the cloud side
• Methods to decrease video bandwidth requirements while maintaining visual quality
• Energy-efficient cloud computing for video coding and rendering at the server side
• Efficient capturing, processing, and streaming of user interactions to the cloud, such as traditional, Kinect-like, Wiilike,
gesture, touch, and similar mobile and touch-based user interactions
• Virtualization of large volume user inputs (e.g., depth sensor video) in the cloud
• Remote desktop, screen sharing, and Game as a Service (GaaS)
• Video-based telepresence, collaborative shared environments, cloud gaming, and augmented reality
• Optimizing cloud infrastructure and server distribution to efficiently support globally distributed and interacting users
• Resource allocation and load balancing in the cloud for optimized application support
• Network routing, software defined networking (SDN), virtualization, on-demand dynamic control of the cloud infrastructure
• Network and end-system mechanisms to reduce latency in cloud-based interactive services
• Adaptive video streaming according to network/user’s limitations
• Quality of Experience (QoE) studies and improvements for delay-sensitive video computing in the cloud: user-cloud and
user-user interactions, effects of delay and visual quality limitations, and methods to improve them
• Novel architectures and designs based on cloud video rendering, such as cloudlet-assisted systems, for video
conferencing, telepresence, tele-learning, collaborative shared environments, screencasting, video gaming, augmented
reality, and other conversational video applications and systems