Multimedia Broadcasting


Multimedia Broadcasting

Home entertainment systems are evolving in size and sophistication, delivering new levels of experience and adventure to consumers. Home Entertainment has expanded to become a true indoor electronic playground for children and adults alike, with systems incorporating large-screen displays, gaming consoles, audio equipment, and docking stations. Often a single remote control gives users complete command of these environments. Delivering innovative capabilities that induce consumers to upgrade and expand their systems. Recent years have been characterized by the new so-called 4K format, also known as 2160p, which is part of the Ultra-high Definition television (UHDTV) standard defined by ITU-R BT.2020. Nowadays, together with the increasing growth of devices with ever greater display resolution, video-on-demand services such as Vimeo, YouTube, Netflix, and Amazon Instant Video all offer 4K video contents with impressive detail and clarity. According to display resolution and emerging Ultra-high Definition (UHD) contents, QoE requirements represent an important issue. Global service providers have begun to offer advanced whole-home video delivery, on the customer premise, enabling consumers to enjoy the emergence of new services offered by IPTV, 3DTV, SU-U-HDTV advancements in cloud services, and over-the-top (OTT) content providers. Nowadays, the concept of networked system can be leveraged by cyber-physical system (CPS) and Internet of Things (IoT). A CPS is a system of collaborating computational elements controlling physical entities. Advances in science and engineering are improving the link between computational and physical elements by means of intelligent mechanisms, increasing the adaptability, autonomy, efficiency, functionality, reliability, safety, and usability of CPS. The growth in the number of smart devices and sensors (i.e., CPS) connected to the IoT has the potential to change how consumers interact with all networked technology, including their media and entertainment platforms. This represents an opportunity for the entertainment industry to assimilate the growing volume of customer insight that will be constantly generated by IoT technologies throughout the market in order to drive more responsive and interactive offerings. The MClab research challenges will range from the application layer with the study of the standard for the multimedia broadcasting and the encapsulation of the side information within the multimedia stream, to the control of the CPS devices, as well as the IoT network optimization in terms of resources and QoE delivered.

  • Enhanced QoE in Home Entertainment system

MClab is currently carrying on research on Multimedia Broadcasting TV Streams (such as DVB, ATSC, or equivalent) supplementary side information to be used to enrich the QoE of the user. The idea is toconnect the Smart TV to others Cyberg-Physical Sustem (CPS) devices by IoT within the home able to “react” opportunely when driven by this side information during the watching time. A IoT based network able to manage this information is being investigated. Furthermore, real experiments to evaluate the subjective QoE of users are being performed thanks to real IoT devices (i.e., ARDUINO, RaspBerry, etc) fully programmable to develop applied research.

  • 4K UHDTV Subjective Video Quality Assesments

MClab researchers are studing a new platform to overcome limitations of ITU-RB-T series. ITU-R BT series define general laboratory and home viewing conditions with particular emphasis in PVD valid for both SDTV and HDTV whereas subjective video quality (SVQ) assessments for UHDTV are actually fully or partially missing. Usually, SVQ test evaluators rate their opinions about each video on paper, and then the data are manually managed through a computer system for further analysis. For these reasons the new platform adds laboratory and home conditions valid for UHDTV (i.e., PVD, angle view, number of evaluators at a time, etc), simplifies the SVQ tests and automates the collection of data. MOS vs pMOS comparison for 4K video sequences at different bitrate is evaluated in terms of  sex, age, and daily number of hours in front of TV.