BBC Research and Development

United Kingdom

BBC Research and Development

United Kingdom
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Neate T.,University of Swansea | Jones M.,University of Swansea | Evans M.,BBC Research and Development
Personal and Ubiquitous Computing | Year: 2017

Television viewers interacting with second screens has become a common sight in the modern living room. Such activities are a mixture of related, semi-related, and non-related browsing of content. This growing trend is revolutionising the way that broadcasters think about their content. Through the envisioned connected home, driven by end-to-end IP connected networks, television content creators and app developers are now considering the design space for multi-device, interactive experiences. In this review paper, we consider the pre-digital beginnings of such scenarios and progress to discuss how the introduction of mobile devices has affected the TV viewing experience. We discuss dual-screen usage over a variety of contexts in the connected home, with a focus on ‘designed’ dual-screen experiences such as companion applications. We conclude with reflections on the future of this area so that app developers, broadcasters, and academics may push further the space and improve future dual- and multi-screen experiences. © 2017, Springer-Verlag London.

Karpuk D.A.,Aalto University | Moss P.,BBC Research and Development
IEEE Transactions on Broadcasting | Year: 2017

We study channel pre-inversion and vector perturbation (VP) schemes for large-scale broadcast channels, wherein a transmitter has M transmit antennas and is transmitting to K single-antenna non-cooperating receivers. We provide results which predict the capacity of MMSE pre-inversion as K→∞. We construct a new VP strategy, max-SINR VP (MSVP), which maximizes a sharp estimate of the signal-to-interference-plus-noise ratio. We provide results which predict the performance of MSVP and demonstrate that MSVP outperforms other VP methods. Lastly, we combine MSVP with the low-complexity sorted QR precoding method to show that MSVP has the potential to efficiently deliver data to a very large number of users at close to channel capacity. IEEE

Hilton A.,University of Surrey | Guillemaut J.-Y.,University of Surrey | Kilner J.,University of Surrey | Grau O.,BBC Research and Development | Thomas G.,BBC Research and Development
IEEE Transactions on Broadcasting | Year: 2011

3DTV production of live sports events presents a challenging problem involving conflicting requirements of maintaining broadcast stereo picture quality with practical problems in developing robust systems for cost effective deployment. In this paper we propose an alternative approach to stereo production in sports events using the conventional monocular broadcast cameras for 3D reconstruction of the event and subsequent stereo rendering. This approach has the potential advantage over stereo camera rigs of recovering full scene depth, allowing inter-ocular distance and convergence to be adapted according to the requirements of the target display and enabling stereo coverage from both existing and 'virtual' camera positions without additional cameras. A prototype system is presented with results of sports TV production trials for rendering of stereo and free-viewpoint video sequences of soccer and rugby. © 2011 IEEE.

Spors S.,University of Rostock | Wierstorf H.,TU Berlin | Raake A.,TU Berlin | Melchior F.,BBC Research and Development | And 2 more authors.
Proceedings of the IEEE | Year: 2013

This paper reviews the current state of loudspeaker-based spatial sound reproduction methods from technical perspective as well as perceptual perspective. A nomenclature is developed that allows for a strict separation between these two perspectives. The physical fundamentals, practical realization, and results from perceptual studies are discussed for a number of well-established and emerging reproduction techniques. Further, the paper outlines novel approaches to spatial sound evaluation in terms of perceived quality and provides a comparison of current approaches. © 1963-2012 IEEE.

Barry A.,Natural History Museum in London | Thomas G.,BBC Research and Development | Debenham P.,BBC Research and Development | Trout J.,Natural History Museum in London
Computer | Year: 2012

In addition to seamlessly integrating virtual and real content, augmented reality systems in museums must provide a viewing interface that is flexible and robust enough for thousands of people to use. © 2012 IEEE.

Yang X.,BBC Research and Development
ICETC 2010 - 2010 2nd International Conference on Education Technology and Computer | Year: 2010

Large-scale enterprise IP networks often involve complex topology consisting of routers, bridges and hosts. Due to multiple redundancies and minimized Single Point of Failure (SPOF), sometimes it is difficult to determine the actual path of a packet even with the most up-to-date physical connectivity diagram. This presents a great challenge for troubleshooting end-to-end traffic flows. This paper describes a novel solution using standard SNMP and a number of powerful algorithms developed for processing MIB data to discover unknown network devices and their physical interconnections, including those between bridges. In the topology diagram delivered by this solution, physical connections are determined at port-level precision. When this is combined with layer3 routing information, the entire physical path of an IP packet between any two hosts on the network can be traced. This paper gives detailed elaboration for all algorithms. It also introduces another important feature of the solution, which is the summarization of multicast groups and their routes, which is derived only from the final routing decision of the routers and therefore completely independent of any multicast routing protocols or manual configurations. © 2010 IEEE..

Baume C.,BBC Research and Development
134th Audio Engineering Society Convention 2013 | Year: 2013

Classification of music by mood is a growing area of research with interesting applications, including navigation of large music collections. Mood classifiers are usually based on acoustic features extracted from the music, but often they are used without knowing which ones are most effective. This paper describes how 63 acoustic features were evaluated using 2389 music tracks to determine their individual usefulness in mood classification, before using feature selection algorithms to find the optimum combination.

Noland K.,BBC Research and Development
Proceedings - IEEE International Conference on Multimedia and Expo | Year: 2012

Good quality conversion from progressive to interlaced video is highly relevant to today's broadcast systems, in which interlaced content is still common. The interlacing process is a form of down sampling, and hence requires an anti-alias filter. For best results the anti-alias filter should be matched to the reconstruction filter, which is comprised of the display and the human visual system. Additionally, it must meet the technical requirements of the down sampling process. In this paper we present a novel method of measuring the combined response to interlacing artefacts that is simple and powerful. We use the results to derive an optimal anti-alias filter template, using a new region-growing technique that is specifically designed to match the measured response whilst keeping to the technical constraints of an interlaced sampling structure. Our results provide support for an existing, heuristically-defined filter, and show that the same filter could be used for a range of viewing distances. © 2012 IEEE.

Butler D.,BBC Research and Development
European Conference on Optical Communication, ECOC | Year: 2015

Live TV production on IP networks is challenging, with real time delivery requirements and ever increasing bit rates. SDN and NFV could allow an integrated approach, where network resources are known and guaranteed. However, there are architecture and protocol issues still to overcome. © 2015 Viajes el Corte Ingles, VECISA.

Noland K.C.,BBC Research and Development
SMPTE Motion Imaging Journal | Year: 2016

This paper provides an analysis of video motion portrayal in terms of classic sampling theory, which uses measurements of the human visual system to determine the highest temporal frequency that the frame rate should be able to support. A discussion of the limitations of a traditional sampling theory approach is also presented. Additional analysis is given of the effects of camera shuttering and display processing, which are essential parts of any real system. This is the first time that such analysis has been carried out in the context of ultra-high definition television.

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