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2017 International Conference on Computer, Communication and Signal Processing (ICCCSP)最新文献

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引用次数: 0
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引用次数: 0
Extracting region of interest using distinct block processing method in sono-mammogram images 利用不同分块处理方法提取超声乳房x线图像的感兴趣区域
G. Jothilakshmi, R. J. Christilda, A. Raaza, Y. SreenivasaVarma, V. Rajendran
The most leading cancers in women's are Breast Cancer nowadays, and it causes increase in the rate of mortality. So the detection of breast cancer at its early stage makes the treatments easy and increases the survival rate. In this paper, a method is proposed to find the Region of Interest(RoI) from the sonomammogram image effectively. First filtering is taken place in order to enhance the image. Second the image is binned and 3D plot of each bin is obtained. From each 3D plot of the binned image the number of peaks are determined. The combination of blocks which are having large number of peaks are identified as ROI.
当今妇女中最主要的癌症是乳腺癌,它导致死亡率上升。因此,在早期阶段发现乳腺癌使治疗变得容易,并提高了生存率。本文提出了一种从声像图图像中有效寻找感兴趣区域的方法。首先进行滤波以增强图像。然后对图像进行分类,得到每个分类的三维图;从图像的每个三维图中确定峰值的数量。具有大量峰值的块的组合被识别为ROI。
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引用次数: 5
Development of intelligent receiver for MIMO-OFDM system MIMO-OFDM系统智能接收机的研制
Huiqin Wang, Jianzeng Li
An intelligent receiver based on Radial Basis Function (RBF) neural network for MIMO system is developed. Due to its fast maximum-likelihood(ML) decoding, STBC is commonly used in MIMO system. However, most of the existing STBC methods rely on the availability of accurate channel state information (CSI) at the receiver. Furthermore, the complexity of the ML algorithm grows exponentially with the number of transmit antennas and constellation size. Especially when the number of transmit antenna is more than two, in order to enhance the symbol transmission rate, its complexity increases greatly. Therefore, intelligent receiver based on RBF neural networks is designed for 3 transmit antennas and 4 receive antennas MIMO system, in which a PCA approach is applied to process the train samples and online sequential extreme learning machine (OS-ELM) is adopted to adjust the parameters of the of RBF neural network. Compared with ML decoder, the proposed receiver has a high precision and good performance to track the variations of the fading channels. The result of simulation illustrates the effectiveness and feasibility of the receiver introduced.
提出了一种基于径向基函数(RBF)神经网络的MIMO系统智能接收机。STBC由于其快速的最大似然解码特性,被广泛应用于MIMO系统中。然而,大多数现有的STBC方法依赖于接收端准确的信道状态信息(CSI)的可用性。此外,ML算法的复杂度随发射天线数量和星座大小呈指数增长。特别是当发射天线数量超过两个时,为了提高符号传输速率,其复杂性大大增加。因此,针对3个发射天线和4个接收天线的MIMO系统,设计了基于RBF神经网络的智能接收机,采用主成分分析方法对训练样本进行处理,并采用在线顺序极值学习机(OS-ELM)对RBF神经网络的参数进行调整。与ML解码器相比,该接收机在跟踪衰落信道变化方面具有较高的精度和良好的性能。仿真结果验证了该接收机的有效性和可行性。
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引用次数: 1
A novel K-means L-layer algorithm for uneven clustering in WSN 一种新的用于WSN非均匀聚类的K-means l层算法
Abhaykumar L. Gupta, N. Shekokar
Clustering of nodes in a WSN is one of the proven ways to achieve increased lifetime of the network. Many novel algorithms continue to be proposed to achieve this objective. A survey of the literature also suggest that uneven clustering with less nodes closer to the base station achieves greater efficiency than same number of nodes in all clusters. This is due to larger overheads for the nodes closer to the base station. This work proposes a novel K-Means L Layer algorithms which leads to the creation of clusters with lesser number of nodes closer to the base station as opposed to the ones far away from it for randomly deployed nodes. The proposed algorithm is a modification of the K Means algorithm which provides even clustering. Further another contribution of this paper is the study of energy consumption of the nodes with regards to the data packet optimization.
无线传感器网络中节点的聚类是实现延长网络生命周期的行之有效的方法之一。为了实现这一目标,许多新颖的算法不断被提出。一项文献调查也表明,与所有集群中相同数量的节点相比,在靠近基站的节点较少的不均匀聚类可以获得更高的效率。这是由于靠近基站的节点开销较大。这项工作提出了一种新颖的K-Means L层算法,对于随机部署的节点,该算法可以创建靠近基站的节点数量较少的集群,而不是远离基站的节点。该算法是对K均值算法的改进,提供了均匀聚类。此外,本文的另一个贡献是在数据包优化方面对节点能耗的研究。
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引用次数: 5
Performance evaluation of dynamic composition & dynamic reconfiguration in SOA applications SOA 应用程序中动态组成和动态重新配置的性能评估
V. Krishnamurthy, C. Babu, R. Brinda
Business-to-Business (B2B) applications are developed predominantly based on service-oriented architectural style which is generally realized using a set of loosely coupled web services. These web services can be selected statically during design-time or dynamically during run-time. The functional and non-functional QoS requirements are typically captured in the Service Level Agreement (SLA) that is mutually agreed between the service provider and the service consumer. Whenever an SLA violation happens, the service provider incurs a penalty. In order to minimize such penalties, the application that is built through a design-time composition of web services needs to be monitored. Whenever a violation of SLA is predicted, those statically composed web services are dynamically reconfigured. This is called as dynamic reconfiguration in SOA. In this case, even the alternate service selection happens at design-time itself. On the other hand, whenever the web services needed for an SOA application development are selected and composed dynamically at run-time, it is called as dynamic composition. The turnaround time involved in both these approaches for mission-critical applications with stringent SLA requirements is compared. It has been inferred that the dynamic reconfiguration approach not only maintained the turnaround time always within the accepted limits, it also incurred only less overhead when compared to dynamic composition approach.
企业对企业(B2B)应用程序主要是基于面向服务的架构风格开发的,一般通过一组松散耦合的网络服务来实现。这些网络服务可以在设计时静态选择,也可以在运行时动态选择。功能性和非功能性 QoS 要求通常体现在服务提供商和服务消费者共同商定的服务级别协议(SLA)中。每当发生违反 SLA 的情况时,服务提供商都会受到处罚。为了尽量减少这种惩罚,需要对通过网络服务设计时组合构建的应用程序进行监控。每当预测到违反 SLA 时,就会对这些静态组成的网络服务进行动态重新配置。这在 SOA 中被称为动态重新配置。在这种情况下,甚至替代服务的选择都是在设计时进行的。另一方面,如果 SOA 应用开发所需的网络服务是在运行时动态选择和组合的,则称为动态组合。我们比较了这两种方法对于具有严格 SLA 要求的关键任务应用程序所涉及的周转时间。结果表明,动态重新配置方法不仅能将周转时间始终保持在可接受的范围内,而且与动态组合方法相比,它产生的开销更少。
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引用次数: 4
Wideband SIW filter for mm-wave applications 用于毫米波应用的宽带SIW滤波器
K. Kumar, T. Shanmuganantham
This article presents the design of wideband filter design using Substrate Integrated Waveguide (SIW) technology for Millimeter (mm) wave applications. Coplanar Waveguide (CPW) is used as transmission path to connect the SIW. This design mainly concentrated on wide bandwidth and compact Size which is suitable for Millimeter wave applications like RADAR, 5G, etc. From 41.3GHz of bandwidth and Max resonance peak occurs around at 60GHz with reflection coefficient −64dB and insertion loss is −1dB. Due to size and availability of bandwidth this device is most suitable for millimeter applications.
本文介绍了一种基于基片集成波导(SIW)技术的毫米波宽带滤波器设计。采用共面波导(CPW)作为传输路径连接SIW。本设计的主要特点是带宽宽、体积小,适合雷达、5G等毫米波应用。从41.3GHz带宽开始,最大共振峰出现在60GHz左右,反射系数为- 64dB,插入损耗为- 1dB。由于带宽的大小和可用性,该器件最适合毫米应用。
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引用次数: 3
OO design for an IoT based automated plant watering system 基于物联网的自动化植物浇水系统的OO设计
Shrinidhi Rajagopal, V. Krishnamurthy
Plants make the world, a greener and a better place to live in. Although all plants need water to survive, giving them too much or too little can cause them to die. Thus, we need to implement an automatic plant watering system that ensures that the plants are watered at regular intervals, with appropriate amount, whenever they are in need. This paper describes the object oriented design of an IoT based Automated Plant Watering System.
植物使世界变得更绿色,更适合居住。虽然所有的植物都需要水来生存,但给它们太多或太少都会导致它们死亡。因此,我们需要实施一个植物自动浇水系统,以确保植物在需要时定期以适当的数量浇水。本文介绍了一种基于物联网的植物自动浇水系统的面向对象设计。
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引用次数: 10
Emulation of IoT gateway for connecting sensor nodes in heterogenous networks 异构网络中连接传感器节点的物联网网关仿真
K. Rajaram, G. Susanth
An Internet of Things (IoT) are ‘things’ that com-municate in different networks. An IoT gateway which provides device connectivity and protocol translation is often expensive in case of small scale academic projects. In view of this, an Emulated IoT gateway is proposed that emulates the IoT gateway using a local computer in a cost effective way. The sensor data sent from sensor nodes connected in cellular network (GPRS), WiFi, RF, Bluetooth or in LAN using Ethernet are collected and successfully processed in cloud server.
物联网(IoT)是在不同网络中进行通信的“事物”。在小规模的学术项目中,提供设备连接和协议转换的物联网网关通常很昂贵。鉴于此,提出了一种仿真物联网网关,该网关使用本地计算机以经济有效的方式模拟物联网网关。通过蜂窝网络(GPRS)、WiFi、RF、蓝牙或使用以太网的局域网连接的传感器节点发送的传感器数据被收集并在云服务器上成功处理。
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引用次数: 12
Automated retinal optic disc detection using pixel based multi fractal analysis 基于像素多重分形分析的视网膜视盘自动检测
Madhukar Bhat, M. Patil, M. Shrinivas, K. Geetha
This paper speaks about a novel method for detection and tracing of optic disc (OD) in retinal fundus images. Detection of diabetic retinopathy (DR), Glaucoma and Edema are the ones in which OD detection finds the meaning and need. The method proposed here introduces a unique concept of fractal analysis in its own way, exploiting the geometric structure of eye called Pixel Based Multi Fractal Analysis (PBMFA). At the very outset the retinal fundus images are pre-processed employing a modified Contrast Limit Adaptive Histogram Equalization (CLAHE) method. Furthering Mean Based Localization is carried out on the pre-processed image to locate the Region of Interest (ROI) over which further processes are carried out helping in improvising time complexity and efficiency of the algorithm developed. Modified Canny Edge detection leveraged with Gabor operator is performed over the ROI located, resulting in extraction of blood vessels from the retinal image. Pixel Based Multi Fractal Analysis is done locating the origin of vascular tree (center of the OD), based on the fact that it carries highest fractal dimension. This helps us locate the center most accurately followed by which OD of the retinal image is traced. This algorithm was implemented on DSK6713T making it a real time system and also an end product ready. Hardware implementation results in improvisation of the time complexity of the system too. An evaluation of the proposed algorithm was run over a set of 50 images each from STARE, MESSIDOR and DRIVE projects, containing images from both normal and pathological subjects. Detection and tracing of Optic Disc was found to be accurate up to 98.66%. Abnormal cases like expansion OD in the final stage of diabetic retinopathy were also detected successfully.
本文介绍了一种检测和跟踪视网膜眼底图像视盘的新方法。糖尿病视网膜病变(DR)、青光眼和水肿的检测是OD检测的意义和需要。本文提出的方法利用人眼的几何结构,引入了一种独特的分形分析概念,称为基于像素的多重分形分析(PBMFA)。首先,采用改进的对比度限制自适应直方图均衡化(CLAHE)方法对视网膜眼底图像进行预处理。在预处理后的图像上进行进一步的基于均值的定位,以定位感兴趣区域(ROI),在此基础上进行进一步的处理,有助于提高所开发算法的时间复杂度和效率。利用Gabor算子对定位的ROI进行改进的Canny边缘检测,从而从视网膜图像中提取血管。基于像素的多重分形分析是利用维管树的原点(OD的中心)具有最高的分形维数,对其进行定位。这有助于我们最准确地定位中心,然后跟踪视网膜图像的外径。该算法在DSK6713T上实现,使其成为一个实时系统,也可以作为最终产品。硬件实现也导致了系统时间复杂度的即兴化。对所提出的算法进行了评估,这些评估分别来自STARE、MESSIDOR和DRIVE项目的50张图像,其中包括正常和病理受试者的图像。视盘的检测和示踪准确率达98.66%。在糖尿病视网膜病变终末期,也成功发现了扩张性OD等异常病例。
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引用次数: 3
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2017 International Conference on Computer, Communication and Signal Processing (ICCCSP)
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