Socrates Varakliotis

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In this paper we review and discuss some of the current efforts and proposals in the standardization bodies IETF and MPEG for the delivery of MPEG-4 over IP. We address the issues of payload format and media control by describing two architec-tures that allow for MPEG-4 streaming. Finally, we describe some MPEG-4 over IP streaming experiments in which the(More)
– Emerging Internet of Things (IoT)/Machine-to-Machine (M2M) systems require a transparent access to information and services through a seamless integration into the Future Internet. This integration exploits infrastructure and services found on the Internet by the IoT. On the one hand, the so-called Web of Things aims for direct Web connectivity by pushing(More)
1. Introduction The Robust Audio Tool (RAT) allows users to achieve real-time multi-way communication over the Internet. It was initially intended for use in multiway conferences, but more recently is being used as an Internet audio broadcast application, by radio stations in the US and elsewhere. RAT can also be used in a point-to-point manner, and as a(More)
Sensors utilize a large number of heterogeneous technologies for a varied set of application environments. The sheer number of devices involved requires that this Internet be the Future Internet, with a core network based on IPv6 and a higher scalability in order to be able to address all the devices, sensors and things located around us. This capability to(More)
In this paper we present a coding technique for 3-D animated wireframe models, suitable for Internet streaming. First we present the MPEG-4 like coding scheme with simple RTP packetisa-tion, and provide details of the achieved compression efficiency. Then, we describe a distortion metric for such a signal and we conduct experiments to study the effect of(More)