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2016 International Conference on Microelectronics, Computing and Communications (MicroCom)最新文献

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Discrete wavelet transform based video watermarking technique 基于离散小波变换的视频水印技术
S. Kadu, Ch. Naveen, V. Satpute, A. Keskar
In this paper, an effective algorithm for providing copyright protection is proposed by using a new embedding strategy for Discrete Wavelet Transform-based video watermarking. Discrete Wavelet Transform (DWT) is applied on the video, to convert the spatial data into frequency domain, having low pass and high pass components. The low frequency component is used for generating the key, by using the watermark image and the binarized Low frequency part (LL) of the video frame. Same procedure is applied on each frame to generate the key for corresponding frame. This generated key should be used at receiver for extracting the watermark which provides copyright protection. Blind watermarking technique is used in this paper which require only key to extract the embedded watermark. The original video is not required during extraction. To criticize the robustness of algorithm, the original watermark image is compared with extracted watermark image after several attacks and their Peak Signal to Noise Ratio (PSNR), Normalized Correlation Coefficient (NC) and Structural Similarity index (SSIM) are calculated. The experimental results demonstrate that the watermark is invisible and it is robust against the various attacks and addition of noise to the video.
本文提出了一种新的基于离散小波变换的视频水印嵌入策略,为视频水印提供有效的版权保护。对视频进行离散小波变换(DWT),将空间数据转换为具有低通和高通分量的频域数据。低频分量利用水印图像和视频帧的二值化后的低频部分生成密钥。在每个帧上应用相同的过程来生成相应帧的密钥。生成的密钥在接收端用于提取水印,从而提供版权保护。本文采用了只需要密钥就可以提取嵌入水印的盲水印技术。提取过程中不需要原始视频。为了检验算法的鲁棒性,将原始水印图像与经过多次攻击后提取的水印图像进行比较,计算其峰值信噪比(PSNR)、归一化相关系数(NC)和结构相似度指数(SSIM)。实验结果表明,该水印具有不可见性,对视频中的各种攻击和噪声具有较强的鲁棒性。
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引用次数: 17
Many-objective feature selection for motor imagery EEG signals using differential evolution and support vector machine 基于差分进化和支持向量机的运动意象脑电信号多目标特征选择
Monalisa Pal, S. Bandyopadhyay
Processing of the movement related task under planning by artificial means provides a means to those people whose natural modality of performing the task is bottlenecked by physical disability or neuro-motor disorders. Electroencephalography (EEG) based Brain-Computer Interfacing (BCI) systems can be defined to be a non-muscular pathway to operate rehabilitative devices using motor imagery signals captured from the motor activation areas in the brain. Supervised learning can help in prediction of motor imagery actions by processing raw EEG signals. However, dimension of the feature space plays a crucial role in this process. Large dimensional features not only increase the computational complexity but also the presence of redundant features causes reduction in classification accuracy. In this work, we intend to select the relevant features from the feature vector obtained by Power Spectrum Density estimation of the left/right motor imagery signals. BCI Competition 2008 - Graz dataset B has been used as the source of raw EEG data. To achieve this goal, we have used single-objective as well as many-objective version of Differential Evolution which optimizes the classifier's performance in terms of five metrics obtained from the Confusion Matrix. Support Vector Machine is used for fitness evaluation of the chosen feature subset as well as for classification of mental states. This work demonstrates the superiority of many-objective Differential Evolution in improving the accuracy due to reduction in feature dimension from an average of 60.56% to 82.60% while processing time of a test EEG sample reduces from 6.1 milliseconds to 5.6 milliseconds. The results obtained in this work are validated using Friedman Test.
通过人工手段对计划中的运动相关任务进行加工,为那些因身体残疾或神经运动障碍而无法完成任务的人提供了一种手段。基于脑电图(EEG)的脑机接口(BCI)系统可以被定义为使用从大脑运动激活区捕获的运动图像信号来操作康复设备的非肌肉途径。监督学习可以通过处理原始脑电图信号来帮助预测运动想象行为。而特征空间的维度在这一过程中起着至关重要的作用。大维度特征不仅增加了计算复杂度,而且冗余特征的存在会降低分类精度。在这项工作中,我们打算从左/右运动图像信号的功率谱密度估计获得的特征向量中选择相关特征。BCI竞赛2008 -格拉茨数据集B已被用作原始EEG数据的来源。为了实现这一目标,我们使用了单目标和多目标版本的差分进化,它根据从混淆矩阵中获得的五个指标来优化分类器的性能。支持向量机用于所选特征子集的适应度评估以及心理状态的分类。结果表明,多目标差分进化方法将特征维数从平均60.56%降低到82.60%,同时将测试脑电样本的处理时间从6.1毫秒降低到5.6毫秒,提高了准确率。本文所得到的结果用Friedman检验进行了验证。
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引用次数: 19
Implementation of real time image processing system with FPGA and DSP 用FPGA和DSP实现实时图像处理系统
M. V. Ganeswara Rao, P. Kumar, A. M. Prasad
The Real time image processing is always in high demand for many applications used in security system, remote sensing, manufacturing process and multimedia, those require to have high performance. Based on that requirement, image processing systems have been proposed in this paper using a heterogeneous platform called TMS320DM642. The platform has an FPGA chip and a DSP processor. The FPGA chip is used as a functional element for image sampling and display and the DSP processor is used for critical image processing. In this paper, firstly we discuss the proposed hardware architecture and its working principle and then some key issues related external memory interface. Finally, an image edge detection algorithm is presented to test functionality of the proposed system. The developed system can acquire live frames from camera, display images on VGA monitor or NTSC/PAL TV and execute some image processing functions like colour model conversion, pixel based operation etc. It is also proved that the developed system can meet the real time performance requirement.
在安防系统、遥感、制造过程和多媒体等对实时图像处理性能要求较高的应用中,对实时图像处理有着很高的要求。基于这一需求,本文提出了基于异构平台TMS320DM642的图像处理系统。该平台采用FPGA芯片和DSP处理器。FPGA芯片作为图像采样和显示的功能元件,DSP处理器用于关键图像处理。本文首先讨论了所提出的硬件架构及其工作原理,然后讨论了与外部存储器接口相关的一些关键问题。最后,提出了一种图像边缘检测算法来测试系统的功能。所开发的系统可以采集摄像机的实时画面,在VGA显示器或NTSC/PAL电视上显示图像,并执行一些图像处理功能,如彩色模型转换、基于像素的运算等。实践证明,所开发的系统能够满足实时性要求。
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引用次数: 22
Generalized average detection probability of centralized cooperative-MIMO cognitive radio network over β — μ faded reporting channel β - μ衰落报告信道上集中式协同- mimo认知无线网络的广义平均检测概率
S. Yadav, S. Hariharan, P. Muthuchidambaranathan
In this paper a generalized closed form expression for the average detection probability of an energy detector is derived in terms of computable Meijer G-function. Where the reporting channel in the centralized cooperative spectrum sensing is experiencing a n - μ fading. The reporting network is modeled as secondary users and fusion center equipped with multiple antenna for reporting. The fusion center combines the received data using maximal ratio combining and performs energy detection to make decision. The arrived generalized low complex expression offers the different fading conditions of reporting channel. Also, it is generalized for multiple antenna scenario. The arrived expression is validated by analytical results over different n - μ values with various multiple antenna scenario.
本文用可计算的Meijer g函数导出了能量探测器平均探测概率的广义封闭表达式。在集中式协同频谱感知中,报告信道经历n μ衰落。报告网络建模为二级用户,融合中心配备多天线进行报告。融合中心采用最大比值组合对接收到的数据进行组合,并进行能量检测进行决策。得到的广义低复杂度表达式提供了不同的报告信道衰落条件。并对多天线场景进行了推广。在不同的n μ值和不同的多天线场景下,对所得表达式进行了验证。
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引用次数: 0
Modeling and simulation of a simple building energy system 简单建筑能源系统的建模与仿真
V. Harish, Arun Kumar
A mathematical model for building energy systems (BES) is developed which maps the energy transfer processes occurring within the building space. Construction elements making up the building space and the heating and cooling plant responsible for thermal comfort of the occupants are also modeled. This involved quantification of linkages between temperature and humidity conditions and level occupancy (number of occupants, occupancy schedule) within building space. Thermal energy transfer processes of conductive, convective, and radiative heat balance for each surface of the construction elements and a convective heat balance for the building space are modeled. Building space zone is modelled for both sensible and latent thermal energy transfer. State space approach is used to model the building construction elements such as walls, with the parameters estimated using a nonlinear time invariant optimization algorithm with constraints. HVAC system is modelled with a control valve, heat emitter, occupancy driven ventilation controlled through a PID controller. A complete building energy system (BES) modeling procedure based on first principles of building physics is presented. BES model is simulated using MATLAB/Simulink and the results depict the temperature variations within the building space at less computational times.
建立了建筑能源系统(BES)的数学模型,该模型映射了建筑空间内发生的能量传递过程。构成建筑空间的建筑元素以及为居住者提供热舒适的供暖和制冷设备也被建模。这涉及量化温度和湿度条件与建筑空间内的占用水平(占用人数、占用时间表)之间的联系。模拟了建筑元素每个表面的导热、对流和辐射热平衡以及建筑空间的对流热平衡的热能传递过程。对建筑空间区域的显热能和潜热传递进行了建模。采用状态空间方法对墙体等建筑构件进行建模,参数估计采用带约束的非线性时不变优化算法。暖通空调系统采用控制阀,热辐射器,占用驱动通风,通过PID控制器控制。提出了一种基于建筑物理第一性原理的完整的建筑能源系统(BES)建模方法。利用MATLAB/Simulink对BES模型进行了仿真,结果表明该模型在较短的计算时间内就能较好地描述建筑空间内的温度变化。
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引用次数: 7
Dual tracking efficiency improvement method for photovoltaic systems 光伏系统双跟踪效率改进方法
A. Kak, M. Srinivasan, Ashwin Shirsat, J. Chandle
Solar energy has gained momentum in the past few years with the current focus being on developing solar cells and panels that can be used on a large scale. A large part of the challenge lies in maintaining acceptable levels of efficiency while increasing scale. In this paper, we present a dual tracking methodology to increase the efficiency of existing photovoltaic systems. Our model employs a solar tracking scheme coupled with maximum power point tracking to achieve better efficiency. Solar tracking is used to ensure that the maximum permissible sunlight falls on the panel at any given point in time, while maximum power point tracking ensures load matching. The results are based on simulations performed in MATLAB.
太阳能在过去几年中获得了发展势头,目前的重点是开发可大规模使用的太阳能电池和电池板。很大一部分挑战在于在扩大规模的同时保持可接受的效率水平。在本文中,我们提出了一种双跟踪方法来提高现有光伏系统的效率。我们的模型采用太阳能跟踪方案与最大功率点跟踪相结合,以达到更好的效率。太阳能跟踪用于确保在任何给定时间点上最大允许的阳光照射在面板上,而最大功率点跟踪确保负载匹配。结果基于MATLAB仿真。
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引用次数: 0
Electro-oculogram based digit recognition to design assitive communication system for speech disabled patients 基于眼电图的数字识别设计语言障碍患者被动交流系统
Arnab Rakshit, A. Banerjee, D. Tibarewala
HCI (Human Computer Interfacing) technology is now able to provide an alternative support to the speech disabled person who have undergone severe brain stroke or spinal cord injury. It has been presented here that amongst all bio potential signal Electro-Oculogram (EOG) signal has got the ability to represent all daily life characters which is most needed for communication. This paper is aimed to provide novel approach of rehabilitative HCI where it successfully classifies the numerical digits drawn by subject's eye movement and for achieving the result, electro-oculography sensors (dual channel) and amplifier has been designed, which is able to extract the sharp change of corneo retinal potential due to eyeball movement intended to draw a pattern (numeric digit, alphabet). The extracted signal has been processed and classified successfully with more than 90% accuracy rate and with suitable precision and sensitivity value. Here Power spectral density has been used as feature extractor and support vector machine with multilayer perceptron kernel function has been used as feature classifier. Performance of other classifiers also have been compared here. 12 healthy subjects took part in experiment and their eyeball movement signal has been acquired for distinguishing different numerical digits that are frequently needed for communication to external world.
HCI(人机接口)技术现在能够为遭受严重脑中风或脊髓损伤的语言残疾人士提供另一种支持。在所有的生物电位信号中,眼电信号具有表达日常生活中最需要的各种特征的能力。本文旨在提供一种新的康复HCI方法,成功地对受试者眼球运动绘制的数字进行分类,为了实现这一结果,设计了双通道眼电传感器和放大器,能够提取眼球运动引起的角膜视网膜电位的急剧变化,以绘制图案(数字、字母)。对提取的信号进行了成功的分类处理,准确率达到90%以上,精度和灵敏度值都比较合适。本文采用功率谱密度作为特征提取器,采用多层感知机核函数支持向量机作为特征分类器。其他分类器的性能也在这里进行了比较。选取12名健康受试者,采集眼球运动信号,用于识别与外界交流时频繁使用的不同数字。
{"title":"Electro-oculogram based digit recognition to design assitive communication system for speech disabled patients","authors":"Arnab Rakshit, A. Banerjee, D. Tibarewala","doi":"10.1109/MICROCOM.2016.7522560","DOIUrl":"https://doi.org/10.1109/MICROCOM.2016.7522560","url":null,"abstract":"HCI (Human Computer Interfacing) technology is now able to provide an alternative support to the speech disabled person who have undergone severe brain stroke or spinal cord injury. It has been presented here that amongst all bio potential signal Electro-Oculogram (EOG) signal has got the ability to represent all daily life characters which is most needed for communication. This paper is aimed to provide novel approach of rehabilitative HCI where it successfully classifies the numerical digits drawn by subject's eye movement and for achieving the result, electro-oculography sensors (dual channel) and amplifier has been designed, which is able to extract the sharp change of corneo retinal potential due to eyeball movement intended to draw a pattern (numeric digit, alphabet). The extracted signal has been processed and classified successfully with more than 90% accuracy rate and with suitable precision and sensitivity value. Here Power spectral density has been used as feature extractor and support vector machine with multilayer perceptron kernel function has been used as feature classifier. Performance of other classifiers also have been compared here. 12 healthy subjects took part in experiment and their eyeball movement signal has been acquired for distinguishing different numerical digits that are frequently needed for communication to external world.","PeriodicalId":118902,"journal":{"name":"2016 International Conference on Microelectronics, Computing and Communications (MicroCom)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128166070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Establishment of underwater wireless acoustic MODEM using C-OFDM 基于C-OFDM的水下无线声学调制解调器的建立
Cheepurupalli Ch. Naidu, E. Stalin
Establishing an underwater wireless acoustic communication link for practical applications is still a difficult task because of the severe channel conditions. Doppler and range spread are extremely high for under water channels (UWC) compared to ordinary radio channels. Moreover, the ever varying nature of the UWC increases the uncertainty in predicting the worst case values of doppler spread and range spread. In recent years, orthogonal frequency division multiplexing (OFDM) has emerged as the single solution to most of the problems in wireless communication systems. OFDM has dominated over single carrier modulation techniques mainly because of the simple, robust and low complexity receiver design with high data rate and high band width efficiency. But, it is only very recently that people have started exploring the usage of OFDM for UWC. In this paper, the design, modeling and testing of coded OFDM based underwater acoustic communication system for high data rate applications is explained.
由于信道条件恶劣,建立实际应用的水下无线水声通信链路仍然是一项艰巨的任务。与普通无线电信道相比,水下信道(UWC)的多普勒和距离扩展非常高。此外,UWC不断变化的性质增加了预测多普勒扩频和距离扩频最坏情况值的不确定性。近年来,正交频分复用技术(OFDM)已成为解决无线通信系统中大多数问题的唯一解决方案。OFDM在单载波调制技术中占据主导地位,主要是因为它具有简单、鲁棒和低复杂度的接收机设计,具有高数据速率和高带宽效率。但是,直到最近人们才开始探索在UWC中使用OFDM。本文阐述了基于编码OFDM的高数据速率水声通信系统的设计、建模和测试。
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引用次数: 2
Coils to β-sheets transitions and simulated structural interactions in human SOX4 and syntenin protein: An in silico insight into the cytological regulation: Computational approach for determination of the cell fate in humans 在人类SOX4和syntenin蛋白中,线圈到β-薄片的转变和模拟结构相互作用:对细胞学调节的计算机洞察:确定人类细胞命运的计算方法
A. Banerjee, Sujay Ray
SOX4; a crucial human protein acts as a transcriptional regulator for accurately determining the cytological regulations in human beginning from the embryonic development. It thus is aided by its only binding protein partner; human syntenin who binds to the C-terminal domain of SOX4 protein. Wet laboratory documentation well documents the interaction of proteins on this regard but the residual level analysis via optimization and simulation operation remains yet undisclosed. So, for the purpose, the essential responsible domain sequence of SOX4 protein was extracted thus the protein was modeled via the satisfaction of its several stereo-chemical properties. The human syntenin protein structure was there-after extracted from its experimentally validated crystal structure. Docking simulations of the two proteins further formed the essential protein complex, which then underwent necessary optimization and molecular dynamics simulation. Residual involvement from the pre optimized and post simulated protein-protein complex was evaluated and compared individually, with a focus on the pattern of binding. The doubling up of the predominant ionic interactions and side chain-side chain interactions poses the final simulated complex to be greatly interactive one. Mainly, polar positively charged; His14 from syntenin and Ser8 from the C-terminal protein domain of SOX4 protein aided in the stronger interactions, with His14 forming three predominant interactions solely. Furthermore, Asp10 from syntenin and Glu11 from SOX4 C-terminal domain also remained for increasing the strength of the duo protein complex. Statistically significant evaluations from free energy of folding, net area available for solvent accessibility along-with the conformational shifts from coils to β-sheets in the protein complex additionally affirms the simulated complex structure to increase its stability and conformational strength post optimization and simulation. Therefore, this current molecular level optimized exploration provides a novel scope to scrutinize the residual interactive pattern and the most stable interactive protein structure dependable for the proper cytological regulation in humans. For the upcoming research, it thereby instigates the clinical and biomedical field for cell fate determinations and neurogeny.
SOX4;一种至关重要的人类蛋白作为转录调控因子,准确地决定了人类从胚胎发育开始的细胞学调控。因此,它是由它唯一的结合蛋白伙伴辅助的;结合SOX4蛋白c端结构域的人syntenin。湿实验室文件很好地记录了蛋白质在这方面的相互作用,但通过优化和模拟操作进行的残留水平分析仍未公开。为此,我们提取了SOX4蛋白的基本责任结构域序列,并通过满足其几种立体化学性质对其进行建模。从经实验验证的晶体结构中提取了人syntenin蛋白结构。两种蛋白的对接模拟进一步形成必需的蛋白复合物,然后进行必要的优化和分子动力学模拟。预先优化和模拟后的蛋白质-蛋白质复合物的剩余参与分别进行了评估和比较,重点是结合模式。主要离子相互作用和侧链-侧链相互作用的双重作用使最终模拟的配合物具有很强的相互作用。主要是极性带正电;来自syntenin的His14和来自SOX4蛋白c端蛋白域的Ser8参与了更强的相互作用,其中His14单独形成了三个主要的相互作用。此外,来自syntenin的Asp10和来自SOX4 c端结构域的Glu11也被保留,以增加duo蛋白复合物的强度。从折叠自由能、可接近溶剂的净面积以及蛋白质复合体中从线圈到β-片的构象转变等方面进行的统计显著性评估,进一步证实了模拟的复合体结构在优化和模拟后增加了其稳定性和构象强度。因此,目前的分子水平优化探索提供了一个新的范围,以仔细检查剩余的相互作用模式和最稳定的相互作用蛋白结构,可靠的适当的细胞学调节在人类。对于即将到来的研究,它因此激发了临床和生物医学领域的细胞命运决定和神经发生。
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引用次数: 0
Design of very low power time — domain analog — to — digital converter 超低功耗时域模数转换器的设计
Chandrima Choudhury, S. Majhi, A. K. Mal
In this work design of a highly digital intensive Analog-to-Digital Converter is proposed using UMC 180 nm CMOS process technology with 1.8 V power supply. The ADC gives 5-bit resolution for a sampling frequency of 16.11 MHz while occupying 0.012 mm2 area. Average power consumption is only 1.43 mW. The design is implemented using a single-phase VCO based quantizer. The VCO has a clock-to-clock jitter of 769 fs and the frequency counter, that has been used as quantizer, is compatible with frequencies in the GHz range.
本文提出了一种采用UMC 180 nm CMOS工艺、1.8 V电源的高数字密集型模数转换器的设计方案。该ADC提供5位分辨率,采样频率为16.11 MHz,占用0.012 mm2面积。平均功耗仅为1.43兆瓦。该设计采用基于单相压控振荡器的量化器实现。VCO的时钟间抖动为769 fs,频率计数器用作量化器,与GHz范围内的频率兼容。
{"title":"Design of very low power time — domain analog — to — digital converter","authors":"Chandrima Choudhury, S. Majhi, A. K. Mal","doi":"10.1109/MICROCOM.2016.7522406","DOIUrl":"https://doi.org/10.1109/MICROCOM.2016.7522406","url":null,"abstract":"In this work design of a highly digital intensive Analog-to-Digital Converter is proposed using UMC 180 nm CMOS process technology with 1.8 V power supply. The ADC gives 5-bit resolution for a sampling frequency of 16.11 MHz while occupying 0.012 mm2 area. Average power consumption is only 1.43 mW. The design is implemented using a single-phase VCO based quantizer. The VCO has a clock-to-clock jitter of 769 fs and the frequency counter, that has been used as quantizer, is compatible with frequencies in the GHz range.","PeriodicalId":118902,"journal":{"name":"2016 International Conference on Microelectronics, Computing and Communications (MicroCom)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127584685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
2016 International Conference on Microelectronics, Computing and Communications (MicroCom)
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