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2017 Fourth International Conference on Signal Processing, Communication and Networking (ICSCN)最新文献

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Design and analysis of single precision floating point multiplication using Karatsuba algorithm and parallel prefix adders 基于Karatsuba算法和并行前缀加法器的单精度浮点乘法设计与分析
K. V. Gowreesrinivas, P. Samundiswary
Floating point operations like multiplication, division, addition and subtraction are important in digital signal processing applications. Out of all these, frequently used operation is multiplication and it changes the performance of single precision floating point multiplication in terms of delay and area. In this paper, performance analysis of single precision floating point multiplier is done by using Karatsuba algorithm with Vedic technique for multiplication and different Parallel Prefix adders like Sklansky, Brent-Kung and Knowles adders for exponent addition. This combination provides lesser area to compute multiplication compared to that existing multipliers. Further, the performance parameters comparison is done in terms of area and delay. The entire modules of single precision floating point multiplier are developed with Verilog HDL and synthesized with Xilinx ISE tool.
浮点运算如乘法、除法、加法和减法在数字信号处理应用中很重要。在这些运算中,最常用的运算是乘法运算,它在延迟和面积方面改变了单精度浮点乘法运算的性能。本文通过使用带有Vedic技术的Karatsuba算法进行乘法运算,并使用Sklansky、Brent-Kung和Knowles等不同的并行前缀加法器进行指数加法运算,对单精度浮点乘法器进行性能分析。与现有的乘数器相比,这种组合提供的计算乘法的面积更小。此外,还从面积和时延两个方面对性能参数进行了比较。单精度浮点乘法器的整个模块是用Verilog HDL开发的,用Xilinx ISE工具合成的。
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引用次数: 3
Center bias enhanced visual saliency detection method 中心偏置增强视觉显著性检测方法
A. Diana Andrushia, R. Thangarajan
Due to the advancement in multimedia technology, the images and videos play a major role in day today life. How the humans are looking into the image? The computational models of visual attention used in many of the computer vision tasks such as image segmentation, object recognition, image understanding, etc. The proposed method aims to construct visual saliency model with the help of the center bias and pre-attentive features. The bottom-up visual saliency model is introduced. Influence of Center bias is the key mechanism of the proposed method. Difference of Gaussian (DOG) filter and gaussian envelope function are used to identify the salient objects of an image. The experimental results of the proposed method compared with five state-of-art-methods. The benchmark database is used to obtain the performance metrics. Receiver Operating Characteristics (ROC), precision, recall and f-measure are found to analyze the performance of the proposed method.
由于多媒体技术的进步,图像和视频在日常生活中扮演着重要的角色。人类是如何看待图像的?视觉注意的计算模型用于许多计算机视觉任务,如图像分割、物体识别、图像理解等。该方法旨在利用中心偏差和前注意特征构建视觉显著性模型。介绍了自底向上的视觉显著性模型。中心偏差的影响是该方法的关键机理。采用高斯差分滤波(DOG)和高斯包络函数对图像中的显著目标进行识别。实验结果与现有的五种方法进行了比较。基准数据库用于获取性能指标。利用受试者工作特征(Receiver Operating characteristic, ROC)、精密度、召回率和f-measure来分析该方法的性能。
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引用次数: 1
A study on recent bio-inspired optimization algorithms 仿生优化算法研究进展
N. Pazhaniraja, P. V. Paul, G. Roja, K. Shanmugapriya, B. Sonali
Bio-Inspired is a field of study that combines all the subfields together which are related to the connectionism, engineering, social behavior and emergence. Biologically inspired computing is a major subset of natural computation. The bio inspired algorithm is an effective optimization algorithm. Since the existing bio inspired algorithms can be solve the problems, an algorithm based on intelligent animals like Human, Chimpanzee and Dolphin can solve the problems in most efficient and optimized way. Dolphin is one of the most intelligent animal which can solve the complex problems in an efficient manner. This paper explains about the various swarm based optimization algorithms which helps us to analyze where these algorithms can be applied in an efficient manner. A survey on various papers is briefly explained with respect to definition, proposed model, experimental evaluation and their advantages.
生物激励是一个将连接主义、工程学、社会行为和涌现等相关的子领域结合在一起的研究领域。受生物启发的计算是自然计算的一个主要子集。仿生算法是一种有效的优化算法。由于现有的生物启发算法可以解决问题,基于人类、黑猩猩和海豚等智能动物的算法可以以最有效和优化的方式解决问题。海豚是最聪明的动物之一,能有效地解决复杂的问题。本文解释了各种基于群的优化算法,帮助我们分析这些算法可以在哪里有效地应用。本文从定义、提出的模型、实验评价和各自的优势等方面简要介绍了文献综述。
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引用次数: 18
Performance analysis of delay line filter using X-coupler and delay line IIR filter 采用x耦合器和延迟线IIR滤波器的延迟线滤波器性能分析
P. Kasthuri, P. Prakash
Various fiber-optic dispersion effects on optical transmission system are analyzed and dispersion compensation is done using Delay Line Filter (DLF) [2]. Delay line filter is implemented using X-coupler with single source, multiple source and filter. The optical transmission system consists of transmitter, an optical DLF for compensation, fiber transmission channel and a receiver. The performance of the filter is analyzed for single mode fiber using optisystem.
分析了光纤对光传输系统的各种色散效应,并利用延迟线滤波器(Delay Line Filter, DLF)进行色散补偿[2]。延迟线滤波器采用单源、多源和滤波器的x耦合器实现。光传输系统由发射机、用于补偿的光DLF、光纤传输通道和接收机组成。利用optisystem分析了该滤波器在单模光纤中的性能。
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引用次数: 3
An overview of text steganography 文本隐写术概述
R. Krishnan, Prasanth Kumar Thandra, M. Baba
Steganography embeds a secret message inside an innocent looking cover medium, stealthily, without creating any attention. The cover medium used can be a text, image, audio, video, network packets, etc. To embed the secret, steganographic techniques rely on the redundant information of the used cover medium or the properties which human perceptual system fails to differentiate. Hence the choice of using text document as a cover medium is the most difficult one as they have less redundant information. However, as text documents are widely used in organizations, using text document as a cover medium might be a preferable choice in such environment. Considering this, this paper presents an overview of the existing techniques of text steganography and its classification. A comparison of the existing techniques is also provided.
隐写术将秘密信息嵌入到一个看起来无辜的掩体中,悄悄地,不引起任何注意。所使用的覆盖介质可以是文字、图像、音频、视频、网络数据包等。为了嵌入秘密,隐写技术依赖于所使用的覆盖介质的冗余信息或人类感知系统无法区分的属性。因此,使用文本文档作为封面媒介是最困难的选择,因为它们具有较少的冗余信息。然而,由于文本文档在组织中被广泛使用,在这种环境中使用文本文档作为封面媒体可能是更好的选择。鉴于此,本文概述了现有的文本隐写技术及其分类。并对现有技术进行了比较。
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引用次数: 28
A survey onrfid based automatic toll gatemanagement 基于rfid的自动收费站管理研究
K. Gowrisubadra, S. Jeevitha, N. Selvarasi
The Radio Frequency Identification System (RFID) has become a widespread system and its applications have extended in most of the arenas like toll bridge, supply chain management and defense sector. The RFID technology plays a significant role in the arenas of Transport. In now a day's transportation is one of the main disputes in our country. RFID tags began to be extensively used in vehicles to automate toll processes. The spontaneous electronic toll collection system depends on RFID. In Toll Plaza collection requires an amount of actions like prohibiting the vehicle, reducing the casement, presiding the accurate coinage prior than travelers can carry on their journey. RFID technology uses tags that are fixed on the motor vehicles, through which data entrenched on the tags are read by RFID readers. The main study of this article is to explore the various existing approach while addressing the prevention of motorists and toll authorities manually perform ticket payments and also check driving without proper document, overloaded vehicle, respectively.
射频识别系统(RFID)已经成为一个广泛的系统,其应用已经扩展到大多数领域,如收费桥梁,供应链管理和国防部门。RFID技术在交通运输领域发挥着重要的作用。在当今社会,交通纠纷是我国的主要纠纷之一。RFID标签开始广泛应用于车辆,实现收费过程的自动化。自发电子收费系统依赖于RFID。在收费广场收取需要大量的行动,如禁止车辆,减少窗户,领导准确的硬币之前,旅客可以携带他们的旅程。RFID技术使用固定在机动车辆上的标签,RFID读取器通过标签读取嵌入标签上的数据。本文的主要研究是探讨各种现有的方法,同时解决驾驶者和收费当局手动执行门票支付,并检查驾驶没有适当的文件,超载车辆分别。
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引用次数: 3
Comparing univalent and bivalent brain functional connectivity measures using machine learning 使用机器学习比较单价和二价脑功能连接测量
N. Chaitra, P. Vijaya
Functional connectivity is the stochastic association or the dependency of two or more distinct brain regions. It is primarily used for finding patterns that are validated through statistical methods, in the context of brain connectivity. Quantification of functional connectivity is usually performed using Pearson's correlation coefficient (PCC). Many Functional magnetic resonance imaging (fMRI) studies have used PCC to quantify functional connectivity in a bivalent sense. However, the interpretation of negative fMRI responses or deactivation has proved challenging. Therefore, few have employed the absolute value of PCC (univalent) to model functional connectivity. This paper compares the two measures and assesses their performance and suitability for fMRI connectivity modeling. Connectivity analysis and classification of autistic individuals from control population is performed using these two measures. Machine learning classification is employed to quantify the predictive abilities of univalent and bivalent functional connectivity measures. This paper experimentally finds the usage of bivalent measure to be producing better classification accuracy by around 2%, which means it is more suitable for fMRI functional connectivity analysis.
功能连接是两个或多个不同大脑区域的随机关联或依赖。它主要用于发现通过统计方法验证的模式,在大脑连接的背景下。功能连通性的量化通常使用Pearson相关系数(PCC)进行。许多功能磁共振成像(fMRI)研究使用PCC在二价意义上量化功能连接。然而,对fMRI负反应或失活的解释被证明是具有挑战性的。因此,很少有人采用PCC的绝对值(单价)来模拟功能连接。本文比较了这两种方法,并评估了它们在fMRI连接建模中的性能和适用性。使用这两种方法对对照人群的自闭症个体进行了连通性分析和分类。采用机器学习分类来量化一元和二价功能连接度量的预测能力。本文通过实验发现,使用二价测度可以提高约2%的分类准确率,这意味着它更适合于fMRI功能连接分析。
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引用次数: 3
Breast cancer response post neoadjuvant chemotherapy using MRI measurements 用MRI测量新辅助化疗后乳腺癌的反应
S. Sivaranjini, K. Nirmala
Breast cancer is a significantly alarming health issue for women where Dynamic Contrast Enhanced Magnetic Resonance Imaging serves as a pivot in detection, diagnoses and treatment monitoring. In this paper the response given by breast cancer patients to Neoadjuvant Chemotherapy is analyzed with Magnetic Resonance Images of these patients taken before and after treatment. The MRI images are pre-processed using Gaussian filter and the region of interest, tumor region, is identified and segmented using the adaptive k-means clustering. The features are extracted from the segmented images. The effectiveness of treatment to breast cancer is categorized according to the results obtained from the features extracted. The longest diameter measured on the maximum region proved to be prognostic factor for the physicians to decide on the other treatment measures required. Thus the experimental results show that preoperative breast tumor measurements on MRI provide us improved risk stratification methods with better surgical procedure.
乳腺癌对妇女来说是一个非常令人担忧的健康问题,动态对比增强磁共振成像是检测、诊断和治疗监测的关键。本文通过对乳腺癌患者治疗前后的磁共振图像,分析乳腺癌患者对新辅助化疗的反应。使用高斯滤波对MRI图像进行预处理,并使用自适应k均值聚类识别和分割感兴趣的区域,即肿瘤区域。从分割后的图像中提取特征。根据提取的特征得到的结果对乳腺癌治疗的有效性进行分类。在最大区域测量的最长直径证明是医生决定所需的其他治疗措施的预后因素。因此,实验结果表明,术前乳房肿瘤MRI测量为我们提供了改进的风险分层方法和更好的手术方法。
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引用次数: 0
A survey on image completion techniques in remote sensing images 遥感图像补全技术综述
V. Lakshmanan, R. Gomathi
Aèstract-Nowadays, reconstruction of satellite images is one of the important challenges in technology. Sometimes, remote sensing images have dead pixels or pixel missing gives poor visual quality. It is mainly due to the presence of clouds, fogs, or shadows since these images are acquired by sensors at different seasons. The other serious problems in remote sensing images are instrumentation error, registration error and losses of image data during transmission. To get a good visual quality images, degraded remote sensing images are processed by using the application of inpainting. The main objectives of this image inpainting approaches are to fill lost parts of images, delete unwanted objects, remove noise in images and to enhance images quality. Image completion or image inpainting process is one in which the damaged portions are reconstructed or to fill the lost regions using data collected from surrounding areas in original image. So far, a number of inpainting algorithms are available. This paper gives a detailed survey of some inpainting methods which are suitable for remotely sensed images.
摘要:目前,卫星图像的重建是一个重要的技术难题。有时,遥感图像存在死像素或缺像素,导致视觉质量差。这主要是由于云层、雾或阴影的存在,因为这些图像是由传感器在不同的季节获得的。遥感图像的其他严重问题是仪器误差、配准误差和图像数据在传输过程中的丢失。为了获得良好的视觉质量,对退化的遥感图像进行了处理。这种图像补图方法的主要目的是填充图像的丢失部分,删除不需要的物体,去除图像中的噪声和提高图像质量。图像补全或图像补漆过程是利用从原始图像周围区域收集的数据对受损部分进行重建或填充缺失区域的过程。到目前为止,有许多绘制算法可用。本文详细介绍了几种适用于遥感图像的图像修补方法。
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引用次数: 4
Discerning white space and leveraging its potential using USRP and GNU radio 使用USRP和GNU无线电识别空白并利用其潜力
R. Radhika, K. Rajashree, U. Sangeetha, S. Nandhini, R. Maheswari, D. P. Priya, B. Malarkodi, Sudhanshu Kumar
In this paper, we have intended and delineated about discerning the white space in the spectrum which is precious. The Cognitive Radio is transpiring because of its idiosyncratic nature of exploiting the unused spectrum for various praxis. Initially, we have discerned the unused frequencies in the TV band which comprises from 585 to 698 MHz and in the FM band which comprises from 87.5 MHz to 108.0 MHz in the spectrum. Subsequently, we have demonstrated the usage of this unused spectrum by transmitting an audio and a file in these bands. We have also checked the spectrum while transmitting and received the data and audio file. For implementing this we have utilized the USRP (Universal Software Radio Peripheral) and GNU Radio, a hardware and software platform respectively. The sensed spectrum and transmitted audio's screen shots are discussed in the following sections.
本文对光谱中宝贵的白空间的识别进行了探讨和描述。认知无线电正在发生,因为它的特殊性质是利用未使用的频谱进行各种实践。最初,我们已分辨出电视频带内未使用的频率,包括585至698兆赫,以及调频频带内的频谱,包括87.5兆赫至108.0兆赫。随后,我们通过在这些频带中传输音频和文件演示了未使用频谱的使用。我们在发送和接收数据和音频文件时也检查了频谱。为了实现这一点,我们分别使用了USRP(通用软件无线电外设)和GNU无线电,这是一个硬件和软件平台。感测频谱和传输音频的屏幕截图将在以下章节中讨论。
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引用次数: 2
期刊
2017 Fourth International Conference on Signal Processing, Communication and Networking (ICSCN)
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