In this work, we study the problem of end-to-end video transmission over a noisy communication link, and analytically characterize the complexity (of motion search) and robustness metrics for this problem. The presenc...
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ISBN:
(纸本)0780393058
In this work, we study the problem of end-to-end video transmission over a noisy communication link, and analytically characterize the complexity (of motion search) and robustness metrics for this problem. The presence of channel noise results in an uncertainty at the encoder as to the information available at the decoder, naturally invoking the framework of source coding with side information (distributed source coding) used in our analysis. We address three important aspects. First, we quantify the theoretical performance gains attained with side-information based codecs over prediction-based coders like MPEG under a lossy transmission scenario when there is drift. Secondly, we show that by accurate DFD (Displaced Frame Difference) modeling we can closely approach MPEG's compression performance using side-information video coding principles without resorting to long block-length channel codes. Thirdly, we quantify analytically that the value of accurately estimating DFD statistics diminishes as the channel gets noisier.
Before evolution of network coding, communication in multidimensional networks nominates store-and-forward approach. This approach limits information to process in an in-network manner. Furthermore, this traditional a...
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ISBN:
(纸本)9783642240362;9783642240379
Before evolution of network coding, communication in multidimensional networks nominates store-and-forward approach. This approach limits information to process in an in-network manner. Furthermore, this traditional approach was unable to find efficient paths and became a bottleneck for several applications. Network coding was introduced as a remedy and offered a new way to transmit information over acyclic and cyclic networks. In this paper, we identified potential areas of network coding application in parallel architecture and specify the relevant facts and results. To diminish the issues of complexity, we have implemented Linear Network coding (LNC) on 2D-Mesh as a parallel network. For verification of our approach, we have considered some 2D-Mesh architectures for implementing network coding approach, and we have examined our results on this network. We have developed a Parallel network coding approach, which reduces/removes information size and communication complexity exponentially with code length.
Low bone mineral density (BMD), the hallmark of osteoporosis, is a growing public health concern. To date, several conventional machine learning (ML) algorithms have been put out to estimate the risk of osteoporosis. ...
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Records compression and supply coding are powerful strategies for optimizing records communication and garage in networking programs. Those strategies reduce the number of facts that desires to be transmitted or store...
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Electronic health record systems used in clinical settings to facilitate informed decision making, affects the dynamics between the physician and the patient during clinical interactions. The interaction between the p...
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ISBN:
(纸本)9781728185798
Electronic health record systems used in clinical settings to facilitate informed decision making, affects the dynamics between the physician and the patient during clinical interactions. The interaction between the patient and the physician can impact patient satisfaction, and overall health outcomes. Gaze during patient-doctor interactions was found to impact patient-physician relationship and is an important measure of attention towards humans and technology. This study aims to automatically label physician gaze for video interactions which is typically measured using extensive human coding. In this study, physicians' gaze is predicted at any time during the recorded video interaction using optical flow and body positioning coordinates as image features. Findings show that physician gaze could be predicted with an accuracy of over 83%. Our approach highlights the potential for the model to be an annotation tool which reduces the extensive human labor of annotating the videos for physician's gaze. These interactions can further be connected to patient ratings to better understand patient outcomes.
The rapid advancement in wireless communications and mobile computing devices has opened a wide door for developing interesting mobile peer-to-peer multiplayer games (MMGs). In this paper we study an important problem...
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In recent years, network coding has been paid much attention to as information rate can achieve the max-flow bound by using it;meanwhile, it could increase throughput, minimize time delay and save energy of a network....
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ISBN:
(纸本)9781424462520
In recent years, network coding has been paid much attention to as information rate can achieve the max-flow bound by using it;meanwhile, it could increase throughput, minimize time delay and save energy of a network. Network Address Translation (NAT) is widely used as a way to save IP addresses;however, the traditional scheme of NAT has a poor data forwarding efficiency and low throughput. In this paper, network coding is applied to NAT traversal schemes for better performance. Simulation results show that in most conditions the new scheme provides higher throughput and less end-to-end time delay than traditional schemes.
Network coding is famous for its capability in significantly improving the throughput of network. The successful decoding of the network coded data relies on some side information of the original data. In that framewo...
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ISBN:
(纸本)9781479953448
Network coding is famous for its capability in significantly improving the throughput of network. The successful decoding of the network coded data relies on some side information of the original data. In that framework, independent data flows are usually decoded first and then network coded by relay nodes. If appropriate signal design is adopted, physical layer network coding is a natural way in wireless networks. In this work, a network coding tree algorithm which enhances the efficiency of the multiple access system (MAS) is presented. For MAS, researchers try to avoid the collisions but collisions happen frequently under heavy load. By introducing network coding into MAS, our proposed algorithm achieves a better trade-off between average delay and system throughput. When multiple users transmit signal in a time slot, the sum signals are saved and used to jointly decode the collided frames after some component frames of the network coded frame are received. Splitting tree structure is extended to our proposed algorithm for collision solving. The system throughput and average delay of frames are presented in a recursive way. Besides, extensive simulations show that network coding tree algorithm enhances the system performance in terms of system throughput and average frame delay compared with other algorithms.
Online analytical processing is an emerging technique for the implementation of decision support applications that access remote datacubes over information highways. We propose a novel approach for sending datacubes o...
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The development of information systems (IS) is of great importance for researchers and industrial users. Different methods for IS design have been proposed. Some put the emphasis on statical aspects, and others on dyn...
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