We present the design, implementation, and evaluation of PROMISE, a novel peer-to-peer media streaming system encompassing key functions peer lookup, peer-based aggregated streaming, dynamic adaptations to network conditions. Particularly, PROMISE is based on new application level P2P service called CollectCast. CollectCast performs three main functions: (1) inferring leveraging underlying topology performance information for selection senders; (2) monitoring status peers connections...

Peer-to-peer (P2P) file sharing systems generate a major portion of the Internet traffic, and this is expected to increase in future. We explore potential deploying proxy caches different autonomous (ASes) with goal reducing cost incurred by service providers alleviating load on backbone. conduct an eight-month measurement study analyze P2P traffic characteristics that are relevant caching, such as object popularity, popularity dynamics, size. Our shows objects can be modeled Mandelbrot-Zipf...

In this paper, we study a peer-to-peer media streaming system with the following characteristics: (1) its capacity grows dynamically; (2) peers do not exhibit server-like behavior; (3) are heterogeneous in their bandwidth contribution; and (4) each session may involve multiple supplying peers. Based on these characteristics, investigate two problems: how to assign data one quickly amplify system's total capacity. Our solution first problem is an optimal assignment algorithm OTS/sub p2p/,...

We present the design and evaluation of a wireless sensor network for early detection forest fires. first key aspects in modeling do this by analyzing Fire Weather Index (FWI) System, show how its different components can be used designing efficient fire systems. The FWI System is one most comprehensive danger rating systems North America, it backed several decades forestry research. analysis could interest own right to researchers working area manufacturers who optimize communication...

New cloud services are being developed to support a wide variety of real-life applications. In this paper, we introduce new service: industrial automation, which includes different functionalities from feedback control and telemetry plant optimization enterprise management. We focus our study on the layer as most time-critical demanding functionality. Today's large-scale automation projects expensive time-consuming. Hence, propose cloud-based architecture, analyze cost time savings under...

Video magnification reveals subtle variations that would be otherwise invisible to the naked eye. Current techniques require all motion in video very small, which is unfortunately not always case. Tiny yet meaningful motions are often combined with larger motions, such as small vibrations of a gate it rotates, or microsaccades moving We present layer-based approach can amplify within large ones. An examined region/layer temporally aligned and magnified. Matting used magnify only region...

We propose new algorithms to achieve <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">k</i> -coverage in dense sensor networks. In such networks, covering locations approximates the whole area. However, it has been shown before that selecting minimum set of sensors activate from an already deployed is NP-hard. efficient approximation algorithm which achieves a solution size within logarithmic factor optimal. prove our correct and analyze its...

Peer-to-peer (P2P) file sharing systems generate a major portion of the Internet traffic, and this is expected to increase in future. We explore potential deploying proxy caches different autonomous (ASes) with goal reducing cost incurred by service providers alleviating load on backbone. conduct measurement study model popularity P2P objects ASes. Our shows that can be modeled Mandelbrot-Zipf distribution, regardless AS. Guided our findings, we develop novel caching algorithm for traffic...

We propose a new probabilistic coverage protocol (denoted by PCP) that considers sensing models. PCP is fairly general and can be used with different In particular, requires the computation of single parameter from adopted model, while everything else remains same. show how this derived in general, we actually do calculations for two example models: (i) exponential (ii) commonly-used deterministic disk model. The first model chosen because it conservative terms estimating capacity, has been...

Various sensor types, e.g., temperature, humidity, and acoustic, sense physical phenomena in different ways, thus, are expected to have sensing models. Even for the same type, model may need be changed environments. Designing testing a coverage protocol each is indeed costly task. To address this challenging task, we propose new probabilistic (denoted by PCP) that could employ We show PCP works with common disk as well models, minimal changes. analyze complexity of prove its correctness. In...

The Multicast/Broadcast Service (MBS) feature of mobile WiMAX network is a promising technology for providing wireless multimedia, because it allows the delivery multimedia content to large-scale user communities in cost-efficient manner. In this paper, we consider networks that transmit multiple video streams encoded scalable manner receivers using MBS feature. We focus on two research problems such networks: 1) maximizing quality and 2) minimizing energy consumption receivers. formulate...

Streaming virtual reality (VR) content is becoming increasingly popular. Advances in VR technologies now allow providing users with an immersive experience by live streaming popular events, such as the Super Bowl, form of 360-degree videos. Such services are highly interactive and impose substantial load on network, especially cellular networks inconsistent link capacities. In this paper, we perform rigorous analysis 1300 head traces propose a multicast DASH-based tiled solution, including...

Web sites, social networks, sensors, and scientific experiments currently generate massive amounts of data. Owners this data strive to obtain insights from it, often by applying machine learning algorithms. Many algorithms, however, do not scale well cope with the ever increasing volumes To address problem, we identify several optimizations that are crucial for scaling various algorithms in distributed settings. We apply these popular Principal Component Analysis (PCA) algorithm. PCA is an...

Shot boundary detection (SBD) is an important pre-processing step for video manipulation. Here, each segment of frames classified as either sharp, gradual or no transition. Current SBD techniques analyze hand-crafted features and attempt to optimize both accuracy processing speed. However, the heavy computations optical flow prevents this. To achieve this aim, we present technique based on spatio-temporal Convolutional Neural Networks (CNN). Since current datasets are not large enough train...

The recent rise of interest in Virtual Reality (VR) came with the availability commodity commercial VR prod- ucts, such as Head Mounted Displays (HMD) created by Oculus and other vendors. To accelerate user adoption headsets, content providers should focus on producing high quality immersive for these devices. Similarly, multimedia streaming service enable means to stream 360 their platforms. In this study, we try cover different aspects related representation, streaming, assessment that...

Reflections can obstruct content during video capture and hence their removal is desirable. Current techniques are designed for still images, extracting only one reflection (foreground) background layer from the input. When extended to videos, unpleasant artifacts such as temporal flickering incomplete separation generated. We present a technique by jointly solving motion separation. The novelty of our work in optimization formulation well initialization strategy. novel spatiotemporal that...

Live streaming of immersive multimedia content, e.g., 360-degree videos, is getting popular due to the recent availability commercial devices that support interacting with such content as smartphones/tablets and head-mounted displays. Streaming live mobile users using individual connections (i.e., unicast) consumes substantial network resources does not scale large number users. Multicast, on other hand, offers a scalable solution but it introduces multiple challenges, including handling...

Recent research efforts have demonstrated the great potential of building cost-effective media streaming systems on top peer-to-peer (P2P) networks. A P2P architecture can reach a large capacity that is difficult to achieve in conventional server-based services. Hybrid combine use dedicated servers and networks were proposed build advantages both paradigms. However, dynamics such impact various factors system behavior are not totally clear. In this article, we present an analytical framework...

In mobile TV broadcast networks, the base station broadcasts channels in bursts such that devices can receive a burst of traffic and then turn off their radio frequency circuits till next order to save energy. To achieve this energy saving without scarifying streaming quality, must carefully construct schedule for all channels. This is called scheduling problem. paper, we prove problem with arbitrary bit rates NP-complete. We propose practical simplification general problem, which allows be...