In this paper, we propose a novel architecture of photo core transform (PCT) which is used as transformation of image data into frequency domain in HD Photo, an emerging image coding system developed by Microsoft. In ...
详细信息
In this paper, we propose a novel architecture of photo core transform (PCT) which is used as transformation of image data into frequency domain in HD Photo, an emerging image coding system developed by Microsoft. In order to support various memory bus bandwidths used in system-on-a-chip (SoC) design, an implementation for each bandwidth can be derived based on our architecture. In addition, in order to reduce the local memory size and the traffic between the main and local memories, we propose a novel data transfer and storing scheme for PCT. The experimental results show that hardware modules corresponding to the given bus bandwidths can be reasonably derived from the proposed architecture.
The security of a biometric information system depends partially on the ability of the biometric information sensor to authenticate itself securely to the processing centre it usually interacts with, thus ensuring tha...
详细信息
ISBN:
(纸本)9781424429165
The security of a biometric information system depends partially on the ability of the biometric information sensor to authenticate itself securely to the processing centre it usually interacts with, thus ensuring that the securely transmitted biometric data has not been constructed by an attacker. The biometric sensors of a biometric information system are often physically exposed to potential adversaries who may manipulate them and therefore compromise the security of the system. Such attacks can be detected by continuous and secure sensor monitoring. The proposed scheme is based on the Kerberos protocol for dealing with sensor authentication issues. Using authenticated control/data packets its functionality has been extended to provide secure sensor monitoring, which can help in detecting physical attacks on the sensor itself.
Multicasting is an efficient way for delivering rich multimedia applications to large user groups as it allows the transmission of packets to multiple destinations using fewer network resources. Content and service pr...
详细信息
ISBN:
(纸本)9781424411436
Multicasting is an efficient way for delivering rich multimedia applications to large user groups as it allows the transmission of packets to multiple destinations using fewer network resources. Content and service providers are increasingly interested in supporting multicast communications over wireless networks and in particular over Universal Mobile Telecommunications System (UMTS). To this direction, the third Generation Partnership Project (3GPP) is currently standardizing the Multimedia Broadcast/Multicast Service (MBMS) framework of UMTS. In this paper, we present an overview of the MBMS multicast mode of UMTS. We analytically present the multicast mode of the MBMS and analyze its performance in terms of packet delivery cost under various network topologies, cell environments and multicast users' distributions. Furthermore, for the evaluation of the scheme, we consider different transport channels for the transmission of the data over the UTRAN interfaces and propose a cost based scheme for the efficient radio bearer selection that minimizes the packet delivery cost.
The current Grover quantum searching algorithm cannot identify the difference in importance of the search targets when it is applied to an unsorted quantum database, and the probability for each search target is equal...
详细信息
The current Grover quantum searching algorithm cannot identify the difference in importance of the search targets when it is applied to an unsorted quantum database, and the probability for each search target is equal. To solve this problem, a Grover searching algorithm based on weighted targets is proposed. First, each target is endowed a weight coefficient according to its importance. Applying these different weight coefficients, the targets are represented as quantum superposition states. Second, the novel Grover searching algorithm based on the quantum superposition of the weighted targets is constructed. Using this algorithm, the probability of getting each target can be approximated to the corresponding weight coefficient, which shows the flexibility of this ***, the validity of the algorithm is proved by a simple searching example.
The content-based publish/subscribe (pub/sub) paradigm for system design is becoming increasingly popular, offering unique benefits for a large number of data-intensive applications. Coupled with the peer-to-peer tech...
详细信息
Along with the widespread deployment of the third generation cellular networks, the fast-improving capabilities of the mobile devices, content and service providers are increasingly interested in supporting multicast ...
详细信息
ISBN:
(纸本)9781424415205
Along with the widespread deployment of the third generation cellular networks, the fast-improving capabilities of the mobile devices, content and service providers are increasingly interested in supporting multicast communications over wireless networks and in Particular over Universal Mobile Telecommunications System (UMTS). To this direction, the third Generation Partnership Project (3GPP) is currently standardizing the Multimedia Broadcast/Multicast Service (MBMS) framework of UMTS. 117 this paper, we present on overview of the MBMS multicast mode of UMTS. We analytically present the multicast mode of the MBMS and analyze its performance ill terms of packet delivery cost under various network topologies, cell types and multicast users' distributions. Furthermore, for the evaluation of the scheme, we consider different transport channels for the transmission of the data the UTRAN interfaces.
Multimedia Broadcast Multicast Services (MBMS), introduced in Third Generation Partnership Project (3GPP) Release 6, is a point-to-multipoint downlink bearer service that addresses the need for the efficient usage of ...
详细信息
ISBN:
(纸本)9781424415205
Multimedia Broadcast Multicast Services (MBMS), introduced in Third Generation Partnership Project (3GPP) Release 6, is a point-to-multipoint downlink bearer service that addresses the need for the efficient usage of the expensive radio resources. Power control is one of the most important aspects in MBMS due to the fact that Node B's transmission power is a limited resource and must be shared among all MBMS users in a cell. Consequently, the analysis of transmitted power plays a fundamental role in the planning and optimization process of Universal Mobile Telecommunications System (UMTS) radio access networks. This paper investigates several factors affecting Node B's transmission power levels such as, cell deployment, propagation models, Quality of Service (QoS) requirements, users' distributions and mobility issues. Finally different transport channels for the transmission of the multicast data over the UTRAN interfaces are considered.
This paper proposes a power control scheme for the efficient radio bearer selection in the Multimedia, Broadcast/Multicast Service (MBMS) framework of Universal Mobile Telecommunications System (UMTS). The choice of t...
详细信息
ISBN:
(纸本)9781424409921
This paper proposes a power control scheme for the efficient radio bearer selection in the Multimedia, Broadcast/Multicast Service (MBMS) framework of Universal Mobile Telecommunications System (UMTS). The choice of the most efficient transport channel in terms of power consumption is a key point for the MBMS since a wrong transport channel selection for the transmission of the MBMS data could result to a significant decrease in the total capacity of the system. Different UMTS transport channels are examined and an algorithm that defines the switching point between dedicated and common radio bearers is proposed The proposed MBMS power control scheme selects the transport channel that reduces the Node B's transmission power in every cell of the network with multicast users.
In this paper, we have developed a novel framework to enable more effective visual analysis and retrieval of large-scale news videos via interactive visualization, so that the audiences can find news stories of intere...
详细信息
ISBN:
(纸本)1595934804;9781595934802
In this paper, we have developed a novel framework to enable more effective visual analysis and retrieval of large-scale news videos via interactive visualization, so that the audiences can find news stories of interest at first glance. Keyframes and keywords are automatically extracted from news video clips and visually represented according to their interestingness measurement and relations. A computational approach is also developed to quantify the interestingness measurement of video clips. Our experimental results have shown that our techniques for intelligent news video analysis have the capacity to enable more effective visualization and retrieval of large-scale news videos. Our visualization-based news video analysis and retrieval system is very useful for security applications and for general audiences to quickly find the news stories of interest from large-scale news videos among many channels. Copyright 2007 ACM.
We address the issue of measuring storage, or query load distribution fairness in peer-to-peer data management systems. Existing metrics may look promising from the point of view of specific peers, while in reality be...
详细信息
暂无评论