Bibliografias temáticas / Wireless Multimedia Sensor Network (WMSNs)

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Literatura científica selecionada sobre o tema "Wireless Multimedia Sensor Network (WMSNs)"

Autor: Grafiati
Publicado: 25 de maio de 2024

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Artigos de revistas sobre o assunto "Wireless Multimedia Sensor Network (WMSNs)"

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Habib, Md Arafat, e Sangman Moh. "Robust Evolutionary-Game-Based Routing for Wireless Multimedia Sensor Networks". Sensors 19, n.º 16 (14 de agosto de 2019): 3544. http://dx.doi.org/10.3390/s19163544.

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Nowadays, wireless multimedia sensor networks (WMSNs) are used in various applications. An energy-efficient and robust routing protocol is essential for WMSNs because the quality of service is important for traffic-intensive multimedia data, such as images and videos. A WMSN with multiple sinks allows cluster heads (CHs) to deliver the collected data to the nearest sink, thereby mitigating the delivery overhead. In this study, we propose a novel evolutionary-game-based routing (EGR) protocol for WMSNs with multiple sinks, in which the evolutionary game theory is exploited for selecting CHs. In EGR, an algorithm to mitigate data redundancy, based on the overlapping field of views of the multimedia sensor nodes, is also presented. This algorithm decreases the number of redundant transmissions, thereby increasing energy efficiency and network performance. According to the performance evaluation results of this study, the proposed EGR significantly outperforms the state-of-art protocols in terms of energy efficiency, end-to-end delay, packet delivery ratio, cluster formation time, and network lifetime.
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Falah Abbood, Mohammed, Mohammed Falih Kadhim e Ahmed Raheem Kadhim. "Improving multimedia data transmission quality in wireless multimedia sensor networks though priority-based data collection". International Journal of Electrical and Computer Engineering (IJECE) 12, n.º 4 (1 de agosto de 2022): 3595. http://dx.doi.org/10.11591/ijece.v12i4.pp3595-3606.

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<span>Wireless multimedia sensor networks (WMSNs) are special kinds of wireless sensor networks (WSN) that can send multimedia data such as audio and video streams. Sensors used in WMSNs are smart, tiny, and resource constraint sensor nodes (SNs) distributed in a large area. Typically, multimedia data are large in comparison to other data types. As a result, WMSNs have to deal with high volumes of packet transmission, leading to a high rate of packet loss and network congestion. Network congestion can significantly affect the quality of service and usually lead to high energy consumption. Thus, to improve the quality of service (QoS) and transmission performance, it is necessary to deal with network congestion. In the past, different packet prioritizing methods were proposed to deal with this issue. However, improving QoS usually requires high energy to function correctly. Consequently, using rechargeable sensor nodes to reduce energy consumption is an acute solution. In this research, priority-based data collection is considered to cut down on data distortion and improve the QoS of the multimedia sensor network. Additionally, energy harvesting sensor nodes were used to reduce energy consumption due to the high transmission rate. The simulation result shows a noticeable improvement in the performance of our proposed method in comparison to previous methods.</span>
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Bouakkaz, Fatima, Wided Ali e Makhlouf Derdour. "Forest Fire Detection Using Wireless Multimedia Sensor Networks and Image Compression". Instrumentation Mesure Métrologie 20, n.º 1 (28 de fevereiro de 2021): 57–63. http://dx.doi.org/10.18280/i2m.200108.

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Recently, the issue of multimedia sensors received considerable critical attention, that led to the apparition of Wireless Multimedia Sensor Networks (WMSNs) WMSN that different from wireless sensor networks (WSN) by using multimedia sensors that can process video, audio, image data besides scalar data and send it to station base (SB). Multimedia data have a big volume bigger than scalar data and need more resources and consumed more energy. The ideal solution to solve the problems of WMSN (big volume, energy consumption) is data compression. Forest plays a critical role in our daily life we can summarize the importance of forests in human life. Among the most dangerous events the forest fires that happen because of natural or Man-made. Many methods used to detect forest fires the newest are: wireless multimedia sensor networks. Our system of detecting forest fire has been developed using a wireless multimedia senor network with two types of sensors (scalar, images). In the first phase when the scalar sensors detected a high temperature its announced alarm to activate the image sensors. In the second phase for detecting fire the image sensors, we used image processing tools. When the zone of fire in the image captured was detected the phase of compression started using the down sampling method. the final phase is transmission data to the station base using the grid chain transmission protocol technique, which allows a critical optimization of energy consumption. So, maximizing network life. The competence of the proposed system is achieved by minimizing size of image transmitted with grid chain routing protocol.
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Genta, K.Lobiyal e Abawajy. "Energy Efficient Multipath Routing Algorithm for Wireless Multimedia Sensor Network". Sensors 19, n.º 17 (21 de agosto de 2019): 3642. http://dx.doi.org/10.3390/s19173642.

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Wireless multimedia sensor networks (WMSNs) are capable of collecting multimedia events, such as traffic accidents and wildlife tracking, as well as scalar data. As a result, WMSNs are receiving a great deal of attention both from industry and academic communities. However, multimedia applications tend to generate high volume network traffic, which results in very high energy consumption. As energy is a prime resource in WMSN, an efficient routing algorithm that effectively deals with the dynamic topology of WMSN but also prolongs the lifetime of WMSN is required. To this end, we propose a routing algorithm that combines dynamic cluster formation, cluster head selection, and multipath routing formation for data communication to reduce energy consumption as well as routing overheads. The proposed algorithm uses a genetic algorithm (GA)-based meta-heuristic optimization to dynamically select the best path based on the cost function with the minimum distance and the least energy dissipation. We carried out an extensive performance analysis of the proposed algorithm and compared it with three other routing protocols. The results of the performance analysis showed that the proposed algorithm outperformed the three other routing protocols.
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Rosário, Denis, Zhongliang Zhao, Torsten Braun e Eduardo Cerqueira. "A Cross-Layer QoE-Based Approach for Event-Based Multi-Tier Wireless Multimedia Sensor Networks". International Journal of Adaptive, Resilient and Autonomic Systems 5, n.º 1 (janeiro de 2014): 1–18. http://dx.doi.org/10.4018/ijaras.2014010101.

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Wireless Multimedia Sensor Networks (WMSNs) are attracting attention from both academic and industrial environments due to the rapid development of low-cost multimedia sensors. With the enhancement of the multimedia content captured by multimedia devices, WMSNs play an important role in pervasive and ubiquitous systems. The multimedia content in these networks has the potential to enhance the level of collected information, by enlarging the range of coverage, and enabling multi-view support. In the case of WMSN applications, the multi-tier network architecture has proved to be more beneficial than single-tier architecture in terms of energy-efficiency, scalability, functionality and reliability. In this context, a multimedia event detection application is a promising application for multi-tier WMSNs, where the lower-tier nodes detect an event occurrence by means of scalar measurements, and the higher-tier nodes will be woken up to send real-time video flows from the event area. The transmission of multimedia content requires a certain quality level from the user's perspective, while energy consumption and network overhead should be minimized. Among the existing mechanisms for improving video transmissions, application-level Forward Error Correction (FEC) is regarded as a suitable solution to improve video quality level from the user´s standpoint. In this work, the authors propose an adaptive cross-layer approach, which includes a Quality of Experience (QoE)-aware FEC mechanism for WMSNs by generating redundant packets, based on frame importance from user's experience. Additionally, the aothors introduce a multi-tier routing protocol to select the best route to transmit multimedia data. According to the simulation results, the proposed cross-layer approach achieved high video quality level with reduced transmission of redundant packets, which will bring many benefits to a resource-constrained system.
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Abazeed, Mohammed, Kashif Saleem, Abdelouahid Derhab, Mehmet A. Orgun, Norsheila Fisal, Jalal Al-Muhtadi e Suleiman Zubair. "A Review of Secure Routing Approaches for Current and Next-Generation Wireless Multimedia Sensor Networks". International Journal of Distributed Sensor Networks 2015 (2015): 1–22. http://dx.doi.org/10.1155/2015/524038.

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Multimedia applications are gradually becoming an essential—and flourishing—part of our daily lives. The area of wireless sensor networks is not an exception to this trend, as multimedia data have attracted the attention of researchers. Their importance is due to the shift of focus from traditional scalar sensors to sensors equipped with multimedia devices, as well as to the next-generation wireless multimedia sensor networks (WMSNs). The highly sensitive nature of multimedia traffic makes data routing with security even more important in WMSNs. This paper discusses the challenges of secure routing in WMSNs, where most of the proposed works in the literature deal with routing and security as individual issues. A critical and comprehensive review of state-of-the-art routing and security approaches for WMSNs is presented, followed by the discussion of their limitations and features. It is hoped that this extensive review and discussion ultimately identifies the future research directions and the open challenges of secure routing approaches in WMSNs.
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Kim, Jeehyeong, Teasung Kim, Jaewon Noh e Sunghyun Cho. "Fractional Frequency Reuse Scheme for Device to Device Communication Underlaying Cellular on Wireless Multimedia Sensor Networks". Sensors 18, n.º 8 (13 de agosto de 2018): 2661. http://dx.doi.org/10.3390/s18082661.

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Wireless multimedia sensor networks (WMSNs) have been improved with the increase of multimedia data. In WMSNs, a centralization problem can occur because of large-size multimedia data. It is necessary to consider device-to-device (D2D) communication. We focus on D2D WMSN based on cellular networks. Sensors in the D2D WMSN can non-orthogonally use a cellular link, which is a wireless communication channel between a sensor and an aggregator, and a D2D link, which is the channel between sensors. As a result, it has more complex interference environments than an ordinary system. Therefore, it is a key factor to manage the varying inter-cell interference effectively for throughput improvement. We propose an interference mitigation scheme that can be applied to D2D WMSN. In the proposed scheme, a cell is separated into six zones and orthogonal frequency is allocated to each zone for cellular links. The frequencies allocated to cellular links are reused by D2D links of neighboring zones. The simulation results show that the throughput of the proposed scheme increases two times compared to a static frequency allocation scheme.
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Salim, Ahmed, e Hagar Ramdan. "Clustering Algorithm Based on the Direction of Overlapping Field of Views for Wireless Multimedia Sensor Networks". Journal of Computational and Theoretical Nanoscience 14, n.º 1 (1 de janeiro de 2017): 685–93. http://dx.doi.org/10.1166/jctn.2017.6259.

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Wireless Multimedia Sensor network (WMSN) composed of multiple video cameras with possibly overlapping field of views. Node clustering for coordinating multimedia sensing and processing based on classical sensor clustering algorithms cannot enable wireless multimedia sensor nodes to sense areas that are uncorrelated to the areas covered by radio neighboring sensors. In this paper, a distributed clustering algorithm is proposed for WMSNs based on the coverage areas of the overlapped field of views (FoVs) and also on the direction of the FoV. A node may belong to multiple clusters, if its FoV intersects more than one cluster-head which affects efficiently in terms of energy conservation in sensing and processing. Simulation results show that our proposed algorithm has a more advantage in energy conservation, and in decreasing the number of singular nodes which impacts on the clustering efficiency and prolongs the network lifetime effectively.
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Yang, Yang, Yufei Wang, Dechang Pi e Ruchuan Wang. "Optimization of Self-Directed Target Coverage in Wireless Multimedia Sensor Network". Scientific World Journal 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/416218.

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Video and image sensors in wireless multimedia sensor networks (WMSNs) have directed view and limited sensing angle. So the methods to solve target coverage problem for traditional sensor networks, which use circle sensing model, are not suitable for WMSNs. Based on the FoV (field of view) sensing model and FoV disk model proposed, how expected multimedia sensor covers the target is defined by the deflection angle between target and the sensor’s current orientation and the distance between target and the sensor. Then target coverage optimization algorithms based on expected coverage value are presented for single-sensor single-target, multisensor single-target, and single-sensor multitargets problems distinguishingly. Selecting the orientation that sensor rotated to cover every target falling in the FoV disk of that sensor for candidate orientations and using genetic algorithm to multisensor multitargets problem, which has NP-complete complexity, then result in the approximated minimum subset of sensors which covers all the targets in networks. Simulation results show the algorithm’s performance and the effect of number of targets on the resulting subset.
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Sun, En Yan, Xuan Jing Shen e Hai Peng Chen. "Energy Balancing Multipath Routing Protocol in Wireless Multimedia Sensor Networks". Applied Mechanics and Materials 155-156 (fevereiro de 2012): 245–49. http://dx.doi.org/10.4028/www.scientific.net/amm.155-156.245.

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A large amount of image and video streaming need to be transmitted in wireless multimedia sensor networks (WMSNs), and a single path can not meet the requirement of image and video streaming transmission. Multipath routing protocol can increase transmission capability and be appropriate for WMSNs. TPGF is the first multipath routing protocol which is suitable for WMSNs. After TPGF is analyzed deeply, we propose an Energy Balancing Multipath Routing protocol (EBMR) which considers nodes' residual energy and the distance between the node and the sink. Compared to TPGF, EBMPR can more evenly consume nodes' energy and prolong the network lifetime. Simulation results show the advantage of EBMR.
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Mais fontes

Teses / dissertações sobre o assunto "Wireless Multimedia Sensor Network (WMSNs)"

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Liu, Zongyi. "Self-Adaptive Bandwidth Control for Balanced QoS and Energy Aware Optimization in Wireless Sensor Network". Thesis, Toulouse, INSA, 2017. http://www.theses.fr/2017ISAT0034/document.

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Dans le domaine des réseaux de capteurs multimédias sans fil (WMSN), le flux fortement saturé augmente la probabilité de collision et de congestion dans la transmission de données, ce qui dégrade considérablement la performance de la qualité de service (QoS). La technique de déploiement multicanaux est souvent appliquée à la transmission en parallèle pour garantir la QoS. Cependant, comment faire le compromis entre l'exigence QoS et l'efficacité énergétique est un défi pour WMSN énergie-limité. L'analyse théorique de la couche MAC et de la structure de la couche PHY basée sur la norme IEEE 802.15.4, vise à étudier le modèle analytique cross-layer afin de mieux comprendre la relation entre les paramètres du réseau de capteurs et la performance, ouvrant ainsi la voie à de nouvelles améliorations. Recherche d'optimisation multi-canaux. Trouver un indicateur de performance efficace et concevoir une méthode de collecte ou d'estimation de performance efficace basée sur les métriques correspondantes, qui pourraient être utilisées comme entrée de paramètre du mécanisme d'affectation multicanaux. Le système de contrôle dynamique complet est conçu pour une tâche d'attribution multicanal basée sur des techniques d'intelligence de calcul léger et efficace. Nous présentons un mécanisme d'attribution multicouches à bande passante dynamique à fuzzy (MCDB_FLS). La bande passante proactive disponible dans la couche croisée est estimée comme paramètre pour le contrôle d'admission de déploiement multicanal. Une approche axée sur l'apprentissage par renforcement est proposée pour une prise de décision judicieuse dans la mission d'allocation multicanaux. En outre, le modèle de seuil de bande passante basé sur la logique floue fournit une optimisation dynamique sur le contrôle d'admission du système. Les simulations montrent que le MCDB_FLS fonctionne mieux que la référence sur les mesures de QoS et l'efficacité énergétique, réalise le compromis entre l'efficacité énergétique et l'amélioration de la QoS. Enfin, nous introduisons l'intégration de l'approche incrémentielle d'apprentissage automatique dans le mécanisme d'affectation multicanaux avec la Deep Q Network (DQMC). En outre, l'initialisation du poids par action est implémentée sur la base d'un classificateur d'apprentissage supervisé multi-classes avec une approche par empilement. DQMC améliorer la capacité d'auto-adaptatif et de contrôle intelligent pour apprendre le modèle de l'environnement différent de multi-tâches WMSNs
In the Wireless Multimedia Sensor Networks (WMSNs) field, highly saturated flow increases the probability of collision and congestion in data transmission which dramatically degrade the performance of Quality of Service (QoS). Multi-channels deployment technique is often applied to parallel transmission for QoS guarantee. However, how to make trade-off between QoS requirement and energy efficiency is a challenges to energy-constrained WMSNs. Theoretical analysis of MAC layer and PHY layer structure based on IEEE 802.15.4 standard, aim to study on the cross-layer analytical model in order to provide stronger understanding on the relationship between sensor network parameters and performance, pave the way for new enhancements in succedent multi-channel optimization research. Find effective performance indicator and design efficient performance collection or estimation approach based on the corresponding metrics, which could be used as the parameter input of multi-channel assignment mechanism. Comprehensive dynamically control system is designed for multi-channel assignment task based on light weight and high efficient computation intelligence techniques. We present a fuzzy-based dynamic bandwidth multi-channel assignment mechanism (MCDB_FLS). Cross-layer proactive available bandwidth is estimated as parameters for multi-channel deployment admission control. Reinforcement learning-based approach is proposed for more wisely decision-making in multi- channel allocation mission. Furthermore, fuzzy logic-based bandwidth threshold model provides dynamic optimization on system admission control. Simulations show the MCDB_FLS performs better than benchmark on the metrics of QoS and energy efficiency, achieves the trade-off between energy efficiency and QoS improvement. Finally, we introduce the integration of incremental machine learning approach into multi-channel assignment mechanism with Deep Q Network reinforcement learning method (DQMC). Besides, fully action weight initialization is implemented based on multi-class supervised learning classifier with stacking ensemble approach. DQMC improve the ability of self-adaptive and smart control to learn pattern from different environment of multi-tasks WMSNs
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Tannouri, Anthony. "Using Wireless multimedia sensor networks for 3D scene asquisition and reconstruction". Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCD053/document.

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De nos jours, les réseaux de capteurs multimédia sans fils sont prometteurs pour différentes applications et domaines, en particulier avec le développement de l’IoT et des capteurs de caméra efficaces et bon marché. La stéréo vision est également très importante pour des objectifs multiples comme la Cinématographie, les jeux, la Réalité Virtuelle, la Réalité Augmentée, etc. Cette thèse vise à développer un système de reconstruction de scène en 3D prouvant l’utilisation de cartes de disparités stéréoscopiques multi-angles dans le contexte des réseaux de capteurs multimedia. Notre travail peut être divisé en trois parties. La première se concentre sur l’étude de toutes les applications, composants, topologies, contraintes et limitations de ces réseaux. En plus, les méthodes de calcul de disparité de vision stéréoscopique afin de choisir la ou les meilleures méthodes pour réaliser une reconstruction en 3D sur le réseau à faible coût en termes de complexité et de consommation d’énergie. Dans la deuxième partie, nous expérimentons et simulons différents calculs de cartes de disparités sur quelques nœuds en changeant les scénarios (intérieur et extérieur), les distances de couverture, les angles, le nombre de nœuds et les algorithmes. Dans la troisième partie, nous proposons un modèle de réseau basé sur l’arbre pour calculer des cartes de disparités précises sur des nœuds de capteurs de caméra multicouches qui répond aux besoins du serveur pour faire une reconstruction de scène 3D de la scène ou de l’objet d’intérêt. Les résultats sont acceptables et assurent la preuve du concept d’utilisation des cartes de disparités dans le contexte des réseaux de capteurs multimédia
Nowadays, the WMSNs are promising for different applications and fields, specially with the development of the IoT and cheap efficient camera sensors. The stereo vision is also very important for multiple purposes like Cinematography, games, Virtual Reality, Augmented Reality, etc. This thesis aim to develop a 3D scene reconstruction system that proves the concept of using multiple view stereo disparity maps in the context of WMSNs. Our work can be divided in three parts. The first one concentrates on studying all WMSNs applications, components, topologies, constraints and limitations. Adding to this stereo vision disparity map calculations methods in order to choose the best method(s) to make a 3d reconstruction on WMSNs with low cost in terms of complexity and power consumption. In the second part, we experiment and simulate different disparity map calculations on a couple of nodes by changing scenarios (indoor and outdoor), coverage distances, angles, number of nodes and algorithms. In the third part, we propose a tree-based network model to compute accurate disparity maps on multi-layer camera sensor nodes that meets the server needs to make a 3d scene reconstruction of the scene or object of interest. The results are acceptable and ensure the proof of the concept to use disparity maps in the context of WMSNs
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Diratie, Eyassu Dilla. "Hybrid internet of things network for energy-efficient video surveillance system". Electronic Thesis or Diss., université Paris-Saclay, 2022. http://www.theses.fr/2022UPASG066.

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Les réseaux de capteurs visuels sans fil basés sur les réseaux maillés IEEE 802.11 sont des solutions efficaces et adaptées aux systèmes de vidéosurveillance pour surveiller les intrusions dans des zones sélectionnées. Les réseaux de capteurs visuels basés sur IEEE 802.11 offrent des transmissions vidéo à haut débit mais souffrent de problèmes d'inefficacité énergétique. De plus, la transmission vidéo dans les réseaux de capteurs visuels nécessite une qualité de service (QoS) stricte en termes de bande passante et de délai. En outre, il est difficile de réduire la consommation énergétique globale du réseau tout en garantissant une qualité de service garantie en termes de bande passante et de délai dans les réseaux de capteurs visuels sans fil à énergie limitée. La principale contribution de cette thèse est de fournir un réseau de vidéosurveillance économe en énergie sans compromettre l'exigence de qualité de service de la transmission vidéo. Premièrement, nous proposons une nouvelle architecture de réseau hybride IoT pour un système de vidéosurveillance qui détecte et suit un intrus dans la zone de surveillance. Le réseau IoT hybride intègre les réseaux de capteurs visuels multi-sauts basés sur IEEE 802.11 et le réseau LoRa pour fournir un système de vidéosurveillance autonome, économe en énergie et à haut débit. Tirant parti des caractéristiques du réseau LoRa, le réseau LoRa est utilisé comme un réseau toujours actif pour la détection et le suivi préliminaires des mouvements. De plus, le réseau LoRa décide également quels nœuds de capteurs visuels réveiller en fonction des informations de suivi. Le filtre de Kalman est étudié pour suivre la trajectoire de l'intrus à partir des mesures de bruit des capteurs de mouvement à faible puissance afin d'activer uniquement les nœuds de capteurs visuels le long de la trajectoire de l'intrus pour fournir une surveillance vidéo efficace. Nous avons montré par simulation que le filtre de Kalman estime et prédit la trajectoire de l'intrus avec une précision raisonnable. De plus, l'approche de réseau hybride IoT proposée réduit considérablement la consommation d'énergie par rapport à un réseau de capteurs visuels à un seul niveau de surveillance continue traditionnelle et toujours active. Ensuite, la contribution de cette thèse se concentre sur un mécanisme de routage sensible à l'énergie et QoS pour le réseau de capteurs visuels multi-sauts basé sur IEEE 802.11 du réseau hybride IoT. Nous proposons un algorithme de routage qui route un ensemble de flux vidéo vers la passerelle avec une QoS garantie en termes de bande passante et de délai tout en minimisant le nombre de nœuds capteurs visuels impliqués dans le routage. Cela maximise le nombre de nœuds pouvant être complètement désactivés pour optimiser la consommation énergétique globale du réseau sans compromettre les performances QoS. Le problème de routage proposé est formulé comme un programme linéaire entier (ILP) et résolu à l'aide d'un algorithme branch-and-bound. Grâce à la simulation informatique, les performances de l'approche proposée sont comparées aux algorithmes de routage de pointe existants dans la littérature. Les résultats montrent clairement que le mécanisme proposé permet d'économiser une quantité significative de la consommation d'énergie globale tout en garantissant la QoS en termes de bande passante et de délai
Wireless visual sensor networks based on IEEE 802.11 mesh networks are effective and suitable solutions for video surveillance systems in monitoring intrusions in selected areas. The IEEE 802.11-based visual sensor networks offer high bit rate video transmissions but suffer from energy inefficiency issues. Moreover, the video transmission in the visual sensor networks requires strict quality of service (QoS) in terms of bandwidth and delay. Also, it is challenging to decrease the overall energy consumption of the network while assuring guaranteed QoS in terms of bandwidth and delay in energy-constrained wireless visual sensor networks. The main contribution of this dissertation is to provide an energy-efficient video surveillance network without compromising the QoS requirement of video transmission. First, we propose a new hybrid IoT network architecture for a video surveillance system that detects and tracks an intruder in the monitoring area. The hybrid IoT network integrates the IEEE 802.11-based multi-hop visual Sensor Networks and LoRa network to provide an autonomous, energy-efficient, high-bitrate video surveillance system. Leveraging the LoRa network characteristics, the LoRa network is utilized as an always-active network for preliminary motion detection and tracking. Moreover, the LoRa network also decides which visual sensor nodes to wake up depending on the tracking information. The Kalman filter is investigated to track the intruder's trajectory from noise measurements of low-power motion sensors to activate only the visual sensor nodes along the intruder's trajectory to provide effective video vigilance. We showed through simulation that Kalman filter estimates and predicts intruder trajectory with reasonable accuracy. Moreover, the proposed hybrid IoT network approach reduces energy consumption significantly compared with a traditional, always active continuous monitoring single-tier visual sensor network. Next, the contribution of this dissertation focuses on an energy-aware and QoS routing mechanism for the IEEE 802.11-based multi-hop visual sensor network of the hybrid IoT network. We propose a routing algorithm that routes a set of video streams to the gateway with guaranteed QoS in terms of bandwidth and delay while minimizing the number of visual sensor nodes that are involved in routing. This maximizes the number of nodes that can be turned off completely to optimize the overall energy consumption of the network without compromising QoS performance. The proposed routing problem is formulated as an Integer Linear Program (ILP) and solved using the branch-and-bound algorithm. Through computer simulation, the performance of the proposed approach is compared with the existing state-of-the-art routing algorithms from the literature. The results clearly show that the proposed mechanism saves a significant amount of the overall energy consumption while guaranteeing QoS in terms of bandwidth and delay
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4

Molineux, Jeffrey S. "Integration of Wireless Sensor Networks Into a Commercial Off-the-Shelf (COTS) Multimedia Network". Thesis, Monterey, California: Naval Postgraduate School, 2012.

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As the primary military operating environment shifts from the traditional battlefields to a more diverse urban environment, the use of remote wireless sensors is increasing. Traditional development and procurement methods are not capable of meeting the changing requirements and time constraints of commanders. To minimize the time to develop and deploy new systems, commercial solutions must be examined. The focus of this thesis is on the integration of Commercial Off-the-Shelf (COTS) components into a wireless multimedia sensor network. Because components from multiple vendors were utilized, different operating systems and transmission protocols had to be integrated across the network. The network must be capable of providing a varying Quality of Service (QoS) level depending on the active sensors in the network. To ensure the QoS level is met, an adaptive QoS algorithm was implemented in the wireless IEEE 802.11 router which monitored and measured the outgoing transmission interface; from which, it determined the latency and transmission jitter. Based on the results, the program can adjust the bandwidth as necessary. Finally, a user interface is developed that allows end users to monitor the network. The performance of the network is based on the end-to-end throughput, latency and jitter exhibited by the network.
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5

Díaz, Santos Juan Ramón. "Design and Implementation of a Communication Protocol to Improve Multimedia QoS and QoE in Wireless Ad Hoc Networks". Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/62162.

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[EN] This dissertation addresses the problem of multimedia delivery over multi-hop ad hoc wireless networks, and especially over wireless sensor networks. Due to their characteristics of low power consumption, low processing capacity and low memory capacity, they have major difficulties in achieving optimal quality levels demanded by end users in such communications. In the first part of this work, it has been carried out a study to determine the behavior of a variety of multimedia streams and how they are affected by the network conditions when they are transmitted over topologies formed by devices of different technologies in multi hop wireless ad hoc mode. To achieve this goal, we have performed experimental tests using a test bench, which combine the main codecs used in audio and video streaming over IP networks with different sound and video captures representing the characteristic patterns of multimedia services such as phone calls, video communications, IPTV and video on demand (VOD). With the information gathered in the laboratory, we have been able to establish the correlation between the induced changes in the physical and logical topology and the network parameters that measure the quality of service (QoS) of a multimedia transmission, such as latency, jitter or packet loss. At this stage of the investigation, a study was performed to determine the state of the art of the proposed protocols, algorithms, and practical implementations that have been explicitly developed to optimize the multimedia transmission over wireless ad hoc networks, especially in ad hoc networks using clusters of nodes distributed over a geographic area and wireless sensor networks. Next step of this research was the development of an algorithm focused on the logical organization of clusters formed by nodes capable of adapting to the circumstances of real-time traffic. The stated goal was to achieve the maximum utilization of the resources offered by the set of nodes that forms the network, allowing simultaneously sending reliably and efficiently all types of content through them, and mixing conventional IP data traffic with multimedia traffic with stringent QoS and QoE requirements. Using the information gathered in the previous phase, we have developed a network architecture that improves overall network performance and multimedia streaming. In parallel, it has been designed and programmed a communication protocol that allows implementing the proposal and testing its operation on real network infrastructures. In the last phase of this thesis we have focused our work on sending multimedia in wireless sensor networks (WSN). Based on the above results, we have adapted both the architecture and the communication protocol for this particular type of network, whose use has been growing hugely in recent years.
[ES] Esta tesis doctoral aborda el problema de la distribución de contenidos multimedia a través de redes inalámbricas ad hoc multisalto, especialmente las redes inalámbricas de sensores que, debido a sus características de bajo consumo energético, baja capacidad de procesamiento y baja capacidad de memoria, plantean grandes dificultades para alcanzar los niveles de calidad óptimos que exigen los usuarios finales en dicho tipo de comunicaciones. En la primera parte de este trabajo se ha llevado a cabo un estudio para determinar el comportamiento de una gran variedad de flujos multimedia y como se ven afectados por las condiciones de la red cuando son transmitidos a través topologías formadas por dispositivos de diferentes tecnologías que se comunican en modo ad hoc multisalto inalámbrico. Para ello, se han realizado pruebas experimentales sobre una maqueta de laboratorio, combinando los principales códecs empleados en la transmisión de audio y video a través de redes IP con diversas capturas de sonido y video que representan patrones característicos de servicios multimedia tales como las llamadas telefónicas, videoconferencias, IPTV o video bajo demanda (VOD). Con la información reunida en el laboratorio se ha podido establecer la correlación entre los cambios inducidos en la topología física y lógica de la red con los parámetros que miden la calidad de servicio (QoS) de una transmisión multimedia, tales como la latencia el jitter o la pérdida de paquetes. En esta fase de la investigación se realiza un estudio para determinar el estado del arte de las propuestas de desarrollo e implementación de protocolos y algoritmos que se han generado de forma explícita para optimizar la transmisión de tráfico multimedia sobre redes ad hoc inalámbricas, especialmente en las redes inalámbricas de sensores y redes ad hoc utilizando clústeres de nodos distribuidos en un espacio geográfico. El siguiente paso en la investigación ha consistido en el desarrollo de un algoritmo propio para la organización lógica de clústeres formados por nodos capaces de adaptarse a las circunstancias del tráfico en tiempo real. El objetivo planteado es conseguir un aprovechamiento máximo de los recursos ofrecidos por el conjunto de nodos que forman la red, permitiendo de forma simultánea el envío de todo tipo de contenidos a través de ellos de forma confiable y eficiente, permitiendo la convivencia de tráfico de datos IP convencional con tráfico multimedia con requisitos exigentes de QoS y QoE. A partir de la información conseguida en la fase anterior, se ha desarrollado una arquitectura de red que mejora el rendimiento general de la red y el de las transmisiones multimedia de audio y video en particular. De forma paralela, se ha diseñado y programado un protocolo de comunicación que permite implementar el modelo y testear su funcionamiento sobre infraestructuras de red reales. En la última fase de esta tesis se ha dirigido la atención hacia la transmisión multimedia en las redes de sensores inalámbricos (WSN). Partiendo de los resultados anteriores, se ha adaptado tanto la arquitectura como el protocolo de comunicaciones para este tipo concreto de red, cuyo uso se ha extendido en los últimos años de forma considerable
[CAT] Esta tesi doctoral aborda el problema de la distribució de continguts multimèdia a través de xarxes sense fil ad hoc multi salt, especialment les xarxes sense fil de sensors que, a causa de les seues característiques de baix consum energètic, baixa capacitat de processament i baixa capacitat de memòria, plantegen grans dificultats per a aconseguir els nivells de qualitat òptims que exigixen els usuaris finals en eixos tipus de comunicacions. En la primera part d'este treball s'ha dut a terme un estudi per a determinar el comportament d'una gran varietat de fluxos multimèdia i com es veuen afectats per les condicions de la xarxa quan són transmesos a través topologies formades per dispositius de diferents tecnologies que es comuniquen en mode ad hoc multi salt sense fil. Per a això, s'han realitzat proves experimentals sobre una maqueta de laboratori, combinant els principals códecs empleats en la transmissió d'àudio i vídeo a través de xarxes IP amb diverses captures de so i vídeo que representen patrons característics de serveis multimèdia com son les cridades telefòniques, videoconferències, IPTV o vídeo baix demanda (VOD). Amb la informació reunida en el laboratori s'ha pogut establir la correlació entre els canvis induïts en la topologia física i lògica de la xarxa amb els paràmetres que mesuren la qualitat de servei (QoS) d'una transmissió multimèdia, com la latència el jitter o la pèrdua de paquets. En esta fase de la investigació es realitza un estudi per a determinar l'estat de l'art de les propostes de desenvolupament i implementació de protocols i algoritmes que s'han generat de forma explícita per a optimitzar la transmissió de tràfic multimèdia sobre xarxes ad hoc sense fil, especialment en les xarxes sense fil de sensors and xarxes ad hoc utilitzant clusters de nodes distribuïts en un espai geogràfic. El següent pas en la investigació ha consistit en el desenvolupament d'un algoritme propi per a l'organització lògica de clusters formats per nodes capaços d'adaptar-se a les circumstàncies del tràfic en temps real. L'objectiu plantejat és aconseguir un aprofitament màxim dels recursos oferits pel conjunt de nodes que formen la xarxa, permetent de forma simultània l'enviament de qualsevol tipus de continguts a través d'ells de forma confiable i eficient, permetent la convivència de tràfic de dades IP convencional amb tràfic multimèdia amb requisits exigents de QoS i QoE. A partir de la informació aconseguida en la fase anterior, s'ha desenvolupat una arquitectura de xarxa que millora el rendiment general de la xarxa i el de les transmissions multimèdia d'àudio i vídeo en particular. De forma paral¿lela, s'ha dissenyat i programat un protocol de comunicació que permet implementar el model i testejar el seu funcionament sobre infraestructures de xarxa reals. En l'última fase d'esta tesi s'ha dirigit l'atenció cap a la transmissió multimèdia en les xarxes de sensors sense fil (WSN). Partint dels resultats anteriors, s'ha adaptat tant l'arquitectura com el protocol de comunicacions per a aquest tipus concret de xarxa, l'ús del qual s'ha estés en els últims anys de forma considerable.
Díaz Santos, JR. (2016). Design and Implementation of a Communication Protocol to Improve Multimedia QoS and QoE in Wireless Ad Hoc Networks [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/62162
TESIS
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Yang, Chia-Hsiang, e 楊佳祥. "Wireless Multimedia Sensor Network Technology Applications for rice Cultivation and Management Indexes Development". Thesis, 2011. http://ndltd.ncl.edu.tw/handle/dnystk.

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碩士
國立中興大學
生物產業機電工程學系所
99
This research uses wireless multimedia sensor networks (WMSNs) technology to develop the paddy filed server (PFS). PFS system provides real-time remote monitoring of rice growth and environmental change, including temperature, relative humidity, sunshine degree, soil moisture and plant images, which can be a long-term collection of paddy field environmental information and provide historical data search, when reference leaf color in rice cultivation as a fertilizer management. The experimental field areas as in Wufeng township, National Chung Hsing University experimental farm, were cultivated 4 of fertilizing capacity of rice, long-term monitoring of environmental change, and through image processing to identify the leaf color. Discussion after planting 58-91 days for leaf color associated with the chlorophyll content, The results showed that night taking pictures of leaves and chlorophyll content of the correlation coefficient of 0.86, while the daytime image in the illumination range of 50,000 to 60,000 lux when taken as the correlation coefficient was 0.87, when taken as the period for 8 am to 10 am related coefficient of 0.81. Images were obtained during the night to calculate the leaf color index formula, the determination coefficient of 0.94, can optimize fertilization, to avoid excessive nitrogen fertilizer or previous crop affecting the taste enough to result in lower production, to achieve consistent quality.
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Kadiwal, Arif. "Presence-based integration of wireless sensor network and IP multimedia subsystem : architecture implementation and case studies". Thesis, 2008. http://spectrum.library.concordia.ca/976238/1/MR63319.pdf.

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Services are the main driving forces of the Telecommunication industry. In old days the traditional networks e.g. PSTN and mobile cellular networks provide basic services to customers such as voice call, SMS. Unlike mobile cellular networks, Internet provides wide variety of services that allow users to communicate in different ways for example E-mail, WWW, VoIP, and Instant Messaging. To benefit from these Internet (IP) based services and to support new value-added services in mobile cellular networks, the IP Multimedia Subsystem (IMS) is defined. It aims at convergence of Internet and the cellular world. IMS introduced an architectural framework envisioned by telecom experts for providing wide variety of multimedia services for example Presence, Context-based applications, Conferencing, Video-on-Demand, Instant Messaging to name just a few. The main ingredients of these services are data which can be either provided by users or derived from external sources (other networks). In recent years, Wireless Sensor Networks have emerged as networks of tiny devices, sensor nodes. WSNs are characteristically different from existing networks. In general, a WSN is a data oriented network in which sensors sense physical environment and produce data to deliver it to interested applications. These applications are usually external to WSN and reside in an external network (e.g. IMS). The applications or services use this physical data to deliver enhanced services such as context-based services to mobile users. The challenge is to integrate WSN with IMS so that the WSN data can be accessible to IMS services or applications. This thesis exploits a presence-based approach for the integration of WSN and IMS network. A standard interface for data exchange between WSN and IMS has been devised in the Telecommunication Service Engineering group. The data exchange between WSN and IMS services/applications is realized as a publish-subscribe mechanism. In publish-subscribe mechanism the applications subscribe to WSN services (data) and get notified when sensors report any data while the WSN is acting as publisher to publish sensor data to IMS. The presence-based WSN -- IMS architecture provides an abstraction to services and applications for accessing variety of sensed data from different WSNs. The presence based WSN-IMS architecture realizes two main architectural entities, the integrated WSN-IMS gateway and an IMS extended presence server. These two architectural entities play a key role in interworking of WSN and IMS network. The overall architecture has been implemented and tested with prototype applications as well as a performance evaluation has been done to see the efficiency and applicability of the integrated architecture
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Livros sobre o assunto "Wireless Multimedia Sensor Network (WMSNs)"

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International, Conference on Parallel Processing Workshops (2004 Montreal Québec). ICPP 2004 Workshops on Mobile and Wireless Networking, High Performance Scientific and Engineering Computing, Network Design and Architecture, Optical Networks Control and Management, Ad Hoc and Sensor Networks, Compile and Run Time Techniques for Parallel Computing: 15-18 August, 2004, Montreal, Quebec, Canada : proceedings. Los Alamitos, Calif: IEEE Computer Society, 2004.

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Quality Of Service In Heterogeneous Networks Proceedings. Springer, 2010.

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Forouzan, Behrouz A. Data Communications Networking (McGraw-Hill Forouzan Networking). 4a ed. McGraw-Hill Science/Engineering/Math, 2006.

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Data Communications Networking (McGraw-Hill Forouzan Networking). McGraw-Hill Science/Engineering/Math, 2006.

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Data Communications and Networking (McGraw-Hill Forouzan Networking). McGraw-Hill Higher Education, 2007.

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Capítulos de livros sobre o assunto "Wireless Multimedia Sensor Network (WMSNs)"

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Shahidan, A. A., N. Fisal, Nor-Syahidatul N. Ismail e Farizah Yunus. "Proposed Network Coding for Wireless Multimedia Sensor Network (WMSN)". In Lecture Notes in Electrical Engineering, 387–95. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-2598-0_41.

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Mezghani, Mahmoud. "Energy-Efficient Khalimsky-Based Routing Approach for K-Hop Clustered Wireless Multimedia Sensor Networks (WMSNs)". In Intelligent Systems Design and Applications, 1177–87. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-96308-8_109.

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Ang, Li-minn, Kah Phooi Seng, Li Wern Chew, Lee Seng Yeong e Wai Chong Chia. "Single-View Information Reduction Techniques for WMSN Using Event Detection". In Wireless Multimedia Sensor Networks on Reconfigurable Hardware, 105–57. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-38203-1_5.

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Ang, Li-minn, Kah Phooi Seng, Li Wern Chew, Lee Seng Yeong e Wai Chong Chia. "Single-View Information Reduction Techniques for WMSN Using Event Compression". In Wireless Multimedia Sensor Networks on Reconfigurable Hardware, 159–206. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-38203-1_6.

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Ang, Li-minn, Kah Phooi Seng, Li Wern Chew, Lee Seng Yeong e Wai Chong Chia. "Multiple-View Information Reduction Techniques for WMSN Using Image Stitching". In Wireless Multimedia Sensor Networks on Reconfigurable Hardware, 207–48. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-38203-1_7.

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Ang, Li-minn, Kah Phooi Seng, Li Wern Chew, Lee Seng Yeong e Wai Chong Chia. "Wireless Multimedia Sensor Network Technology". In Wireless Multimedia Sensor Networks on Reconfigurable Hardware, 5–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-38203-1_2.

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Huang, Xu-Hong. "Management of Energy Saving for Wireless Sensor Network Node". In Advances in Intelligent Information Hiding and Multimedia Signal Processing, 341–47. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-50212-0_41.

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Bhalia, Mayur, e Arjav Bavarva. "Survey on Energy Efficient Approach for Wireless Multimedia Sensor Network". In Advances in Intelligent Systems and Computing, 25–34. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-4538-9_3.

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Abazeed, Mohammed, Kashif Saleem, Suleiman Zubair e Norsheila Fisal. "CARPM: Cross Layer Ant Based Routing Protocol for Wireless Multimedia Sensor Network". In Ad-hoc Networks and Wireless, 83–94. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-46338-3_8.

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Jing, Zhao, Liu Zhuohua e Xue Songdong. "Research on the Path Monitoring Capability of Wireless Multimedia Sensor Network". In Advances in Intelligent Systems and Computing, 483–89. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-69096-4_67.

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Trabalhos de conferências sobre o assunto "Wireless Multimedia Sensor Network (WMSNs)"

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Ling, Zhou, e Yang Wen-yin. "Distributed Architecture for QoS Control in Wireless Multimedia Sensor Networks (WMSNs)". In 2012 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring (CDCIEM). IEEE, 2012. http://dx.doi.org/10.1109/cdciem.2012.65.

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Shafiee, M., e V. T. Vakili. "MTM-based spectrum sensing in cognitive Wireless Multimedia Sensor Networks (C-WMSNs)". In 2012 Sixth International Symposium on Telecommunications (IST). IEEE, 2012. http://dx.doi.org/10.1109/istel.2012.6482995.

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Priyadarshini, Sushree Bibhuprada B., Debabrata Singh e Monalisa Panda. "A Comparative Study of Redundant Data Minimization and Event Coverage in Wireless Multimedia Sensor Networks (WMSNs)". In 2019 International Conference on Applied Machine Learning (ICAML). IEEE, 2019. http://dx.doi.org/10.1109/icaml48257.2019.00053.

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Priyadarshini, Sushree Bibhuprada B. "A Hybrid Approach Based on Scalar Cluster Leader Selection for Camera Activation (HASL-CA) in Wireless Multimedia Sensor Networks (WMSNs)". In 2019 International Conference on Applied Machine Learning (ICAML). IEEE, 2019. http://dx.doi.org/10.1109/icaml48257.2019.00063.

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Roy, Pulakesh, Dibyendu Roy e Rajib Banerjee. "A Proficient Video Compression using Block based Fragmented Cosine Transform (BFCT) in Wireless Multimedia Sensor Network (WMSN)". In 2020 National Conference on Emerging Trends on Sustainable Technology and Engineering Applications (NCETSTEA). IEEE, 2020. http://dx.doi.org/10.1109/ncetstea48365.2020.9119930.

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Kurde, Archana, e Vijay Ukani. "Aggregation in wireless multimedia sensor network". In 2013 Nirma University International Conference on Engineering (NUiCONE). IEEE, 2013. http://dx.doi.org/10.1109/nuicone.2013.6780084.

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Yadav, Virender, e Ginni Arora. "Analysis of Wireless Multimedia Sensor Network". In 2019 2nd International Conference on Power Energy, Environment and Intelligent Control (PEEIC). IEEE, 2019. http://dx.doi.org/10.1109/peeic47157.2019.8976769.

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Fenhua Wang, Fang Li, Zhiliang Wang e Jingjing Gong. "Wireless sensor network architecture design and implementation". In Multimedia Technology (IC-BNMT 2010). IEEE, 2010. http://dx.doi.org/10.1109/icbnmt.2010.5705253.

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Sharif, Atif, Vidyasagar Potdar e Elizabeth Chang. "Wireless multimedia sensor network technology: A survey". In 2009 7th IEEE International Conference on Industrial Informatics (INDIN). IEEE, 2009. http://dx.doi.org/10.1109/indin.2009.5195872.

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Zhaohua, Long, e Gao Mingjun. "Survey on network lifetime research for wireless sensor networks". In Multimedia Technology (IC-BNMT). IEEE, 2009. http://dx.doi.org/10.1109/icbnmt.2009.5347814.

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