Search results for: M. Soryani
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IET Intelligent Transport Systems > 2012 > 6 > 2 > 115 - 123
Traffic management, especially in intersections, is an important part of intelligent transportation systems (ITS). In this study, a new traffic controller is proposed which removes traffic lights in intersections. The heart of the proposed controller is a simple integer linear program (ILP) code. This program manages safe driving patterns crossing a junction while it tries to maximise number of passed...
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A multi-view video is a collection of videos produced by capturing a same 3D scene at different viewpoints. Since the data size of the multi-view video increases proportionally to the number of cameras, it is necessary to compress multi-view video data for efficient storage and transmission. In this paper, we will discuss about distance increment between camera locations in multi-view video when talking...
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Networks-on-chip (NoC) has been proposed as an only efficient and scalable solution for providing global on-chip communications in any large VLSI design. Simultaneously, power dissipation issues have grown to such importance that they now constrain attainable performance. The large value of power consumption, relative to the active power, can therefore have serious implications for the feasibility...
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A video sequence consists of several hundred frames and as a result creating a panoramic image from these frames is a very time consuming process. Consecutive frames have large overlap areas which do not provide much information. Therefore, some key frames must be extracted for better performance. There are a number of methods for key frame selection, which match all frames in a video sequence. In...
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It is necessary to suppress the average delay to low when a packet is forwarded from a source node to a destination node in network-on-chip (NoC) for the quality maintenance of the communication between nodes. Routing algorithms have a prominent impact on communication quality and performance in on chip interconnection networks. In this paper, we present a novel routing method called Predominant Routing...
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With reducing feature size of transistors and increasing number of cores on a single chip, fault tolerance and reliability have become two significant challenges for IC designers. Since chip design is extremely cost-sensitive, the fault tolerance redundancy must be provided at a reasonable cost. In this paper, a fault tolerant NoC architecture with cores linked to two switches instead of one, is proposed...
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Researches have shown that self similar traffic has essential effects on the network parameters such as loss rate, length of the queue in the routers and throughput. Since classical congestion control algorithms work in short time scales and do not consider self similarity and long time dependency phenomenon of data, development of congestion control algorithms which be able to distinguish and manage...
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By increasing the pipeline length in processors, the accuracy of the branch predictor unit plays an important role in processors efficiencies. In addition to the accuracy, consuming power is also an essential in portable systems. Therefore, in the processors these days the prediction unit is used to determine the branch destination, while most of these accesses are not necessary. In this paper, a...
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One of the most important geometric entities of the epipolar geometry is the epipole. Epipoles can be defined as the intersection of the baseline (the line joining the two camera centers) with each of the two image planes in a stereo rig. In order to compute the epipoles in a stereo rig, many of the algorithms in computer vision involve the computation of the fundamental matrix as an intermediate...
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This paper reports a novel approach to statistical shape-based multispectral image retrieval. The proposed method starts with the definition and calculation of a statistical shape feature called power spectrum vector (PSV). Then independent component analysis (ICA) is used to extract independent PSV components. Later on, the PSV value for each image is presented by a linear combination of these independent...
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Multimedia applications have been widely developed. These applications use TCP-friendly congestion control mechanisms. One of the congestion control mechanisms which multimedia applications use is the TCP-friendly rate control (TFRC). This mechanism is designed for wired networks which any packet loss indicates congestion loss and the sending rate is reduced correspondingly. In this paper, we propose...
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Developing widely useful mobile computing applications presents difficult challenges. On one hand, mobile users demand fast response times, and deep relevant content. On the other hand, mobile devices have limited storage, power and communication resources. Caching frequently accessed data items on the mobile client is an effective technique to improve the system performance in mobile environment...
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TCP-Friendly Rate control (TFRC) is a Loss based rate control mechanism. It uses TCP equation throughput for calculating the sending rate. This equation is a function of loss event rate. TFRC assumes any lost packet as a signal of network congestion and correspondingly reduces its transmission rate. But in wireless links the packet may be lost by handoffs and error prone wireless links. So there should...
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One of the basic QoS service classes in IEEE 802.16 network is best effort (BE). This service class supports services that don't need any QoS requirements like minimum bandwidth. However many of existing demands like Web browsing and FTP involve in this class. Channel access mechanism in BE is based on stand-alone bandwidth requests in bandwidth request contention periods. In this paper we investigate...
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The quality of features directly affects the performance of classification. Many feature selection methods introduced to remove redundant and irrelevant features, because raw features may reduce accuracy or robustness of classification. In this paper we proposed a new method for feature selection based on Decision Dependent Correlation (DDC). We have used SVM classifier and the results on DARPA KDD99...
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IEE Proceedings I - Communications, Speech and Vision > 1992 > 139 > 2 > 212 - 218
New algorithms, based on region-contour segmentation of images, are reported for application to low bit rate coding of monochrome and colour videotelephone image sequences. The prime importance of image edges in visual perception emphasises the need for their accurate representation in image compression. A centroid linkage region growing technique is employed to partition an image into homogeneous...
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Electronics Letters > 1989 > 25 > 12 > 794 - 795
Motion-compensated difference frames derived from a moving image sequence are adaptively segmented into regions of constant intensities. Region boundaries are then coded and transmitted together with region intensities. Only alternate frames are coded and transmitted, skipped frames being reproduced at the receiver by motion-adaptive interpolation. The resulting quality of the reconstructed sequence...
