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2011 IEEE Recent Advances in Intelligent Computational Systems最新文献

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Singular value decomposition method for the detection of defects in woven fabric refined by morphological operation 奇异值分解方法在机织织物疵点检测中的应用
Pub Date : 2011-11-03 DOI: 10.1109/RAICS.2011.6069371
Jayanta K. Chandra, Pradipta K. Banerjee, A. K. Datta
In this paper a new approach for the detection of defects in woven fabric is presented where the singular value decomposition (SVD) method is used. SVD basically removes the interlaced grating structure of the waft and warp of the fabric leaving aside the defective part of the fabric. An intensity threshold value along with the module of definite size is considered for the binarization of the background free fabric image. Finally, for the removal of the noise from the binary fabric image the morphological opening operation with the suitable structuring element is performed. The technique is tested on 287 fabric samples consisting of five different types of defects in three types of woven fabrics from TILDA database. 94.08% success rate of detection of defects is achieved.
本文提出了一种基于奇异值分解(SVD)方法的机织物缺陷检测新方法。SVD基本上是去除织物的经纱和纬纱交错的光栅结构,留下织物的缺陷部分。在对无背景织物图像进行二值化的过程中,考虑了强度阈值和确定尺寸的模量。最后,对二值织物图像进行形态学打开操作,选择合适的结构元素去除噪声。该技术在TILDA数据库中的3种机织物的5种不同缺陷类型的287个织物样品上进行了测试。缺陷检测成功率达94.08%。
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引用次数: 2
A machine learning approach for fingerprint based gender identification 基于指纹的性别识别机器学习方法
Pub Date : 2011-11-03 DOI: 10.1109/RAICS.2011.6069294
K. Arun, K. Sarath
This paper deals with the problem of gender classification using fingerprint images. Our attempt to gender identification follows the use of machine learning to determine the differences between fingerprint images. Each image in the database was represented by a feature vector consisting of ridge thickness to valley thickness ratio (RTVTR) and the ridge density values. By using a support vector machine trained on a set of 150 male and 125 female images, we obtain a robust classifying function for male and female feature vector patterns.
本文研究了基于指纹图像的性别分类问题。我们对性别识别的尝试遵循了使用机器学习来确定指纹图像之间的差异。数据库中的每张图像由脊厚谷厚比(RTVTR)和脊密度值组成的特征向量表示。通过对150张男性和125张女性图像进行训练的支持向量机,我们获得了男性和女性特征向量模式的鲁棒分类函数。
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引用次数: 25
Improved watermark extraction using dynamic stochastic resonance 改进的动态随机共振水印提取方法
Pub Date : 2011-11-03 DOI: 10.1109/RAICS.2011.6069318
R. Chouhan, R. K. Jha, M. Shrivastava, Apoorv Chaturvedi
In this paper, a dynamic stochastic resonance (DSR)-based blind watermark extraction technique has been proposed for robust extraction of a binary watermark. The watermark embedding has been done in mid-band DCT coefficients using well-known PN sequences. Dynamic stochastic resonance has been strategically used to improve the robustness of the extraction algorithm by utilizing the added noise (or degradation) during attacks itself. DSR is a converging iterative process that tunes the coefficients of the possibly attacked image so that effect of noise is suppressed and hidden information is enhanced. Resilience of this technique has been tested in the presence of various attacks such as noise attacks, geometrical distortions, enhancement, compression and filtering. A simple optimization procedure has been adopted for the selection of bistable double-well system parameters in the DSR step so to achieve maximum correlation coefficient under minimum computational complexity. Using the proposed adaptive DSR-based extraction technique, a very robust extraction of watermark can be done without trading-off with visual quality of the watermarked image. When compared with the plain DCT-based technique, the proposed DSR-based DCT technique has been found to give better performance.
本文提出了一种基于动态随机共振(DSR)的盲水印提取技术,用于二值水印的鲁棒提取。水印嵌入是在中频DCT系数中使用著名的PN序列进行的。动态随机共振已被策略性地用于提高提取算法的鲁棒性,通过利用在攻击过程中增加的噪声(或退化)。DSR是一种收敛迭代过程,它对可能被攻击的图像的系数进行调整,以抑制噪声的影响,增强隐藏信息。该技术在噪声攻击、几何扭曲、增强、压缩和滤波等各种攻击下的恢复能力已经得到了测试。为了在最小的计算复杂度下获得最大的相关系数,在DSR步骤中采用了一种简单的优化程序来选择双稳态双井系统参数。利用本文提出的基于自适应dsr的水印提取技术,可以在不牺牲水印图像视觉质量的前提下,实现非常鲁棒的水印提取。通过与普通DCT技术的比较,发现基于dsr的DCT技术具有更好的性能。
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引用次数: 2
Use of spectral estimation methods for computation of SpO2 from artifact reduced PPG signals 利用谱估计方法从伪影减少的PPG信号中计算SpO2
Pub Date : 2011-11-03 DOI: 10.1109/RAICS.2011.6069349
M. R. Ram, K. V. Madhav, E. Krishna, K. N. Reddy, K. Reddy
Arterial blood oxygen saturation (SpO2) is effectively measured by the pulse oximeter. The common cause of pulse oximeter failure, in error- free SpO2 estimation, is motion artifact (MA) corruption in the detected PPG signals. For a reliable and a low failure rate SpO2 estimation, the pulse oximeters must be provided with a clean artifact-free PPG signals with clearly separable DC and AC parts from which the SpO2 is computed in time domain. In this paper, we present non-parametric spectral estimation methods for computing SpO2. The PPG signals recorded with frequently encountered artifacts (bending, vertical and horizontal motions of finger) were used for validation of the proposed methods. Experimental results revealed that the non-parametric spectral estimation methods are as accurate as the time domain analysis and particularly the Blackman-Tukey based SpO2 estimation out performed other non-parametric methods. Further, the Daubechies wavelet based method efficiently reduced motion artifacts restoring all the morphological features of the PPG signals.
动脉血氧饱和度(SpO2)是有效测量脉搏血氧仪。在无误差SpO2估计中,脉搏血氧仪故障的常见原因是检测到的PPG信号中的运动伪影(MA)损坏。为了可靠和低故障率的SpO2估计,脉搏血氧仪必须提供干净的无伪影PPG信号,具有清晰可分离的直流和交流部分,从而在时域内计算SpO2。本文提出了计算SpO2的非参数谱估计方法。经常遇到的伪影(手指弯曲、垂直和水平运动)记录的PPG信号用于验证所提出的方法。实验结果表明,非参数谱估计方法的精度与时域分析相当,特别是基于Blackman-Tukey的SpO2估计优于其他非参数谱估计方法。此外,Daubechies基于小波的方法有效地减少了运动伪影,恢复了PPG信号的所有形态特征。
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引用次数: 9
Voltage flicker mitigation by DSTATCOM for voltage source Arc furnace model DSTATCOM对电压源电弧炉模型电压闪变的抑制
Pub Date : 2011-11-03 DOI: 10.1109/RAICS.2011.6069285
M. Naga Raju, K. Anuradha, G. Murthy, A. Santha Kumari
This paper presents simulation study of an Electric Arc Furnace (EAF) model in the MATLAB/SIMULINK environment. EAF was modeled as a time domain controlled voltage source (CVS) model. Voltage flicker, a phenomenon of annoying light intensity fluctuation, caused by EAF, has been a major power quality concern for both power companies and customers. A model was developed for the EAF and it was applied in the simulation studies of cascaded H-bridge converter based Distribution STATic synchronous COMpensator (DSTATCOM) for voltage flicker mitigation. The controller for DSTATCOM was designed based on d-q model for the reactive power management, which helps in the mitigation of the flicker. With the validated EAF and STATCOM model, simulations are conducted to study the response of the compensator in the distribution system.
本文在MATLAB/SIMULINK环境下对电弧炉(EAF)模型进行仿真研究。采用时域控制电压源(CVS)模型对电激电场进行建模。电压闪变是由电磁场引起的令人讨厌的光强波动现象,一直是电力公司和用户关注的主要电能质量问题。建立了EAF模型,并将其应用于基于级联h桥变换器的分布式静态同步补偿器(DSTATCOM)的电压闪变抑制仿真研究。DSTATCOM的控制器设计基于d-q模型进行无功功率管理,有助于抑制闪变。利用验证的EAF和STATCOM模型,对补偿器在配电系统中的响应进行了仿真研究。
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引用次数: 6
Blind Source Separation of musical instrument signals by identification of wavelets and filter bank coefficients 基于小波识别和滤波器组系数的乐器信号盲源分离
Pub Date : 2011-11-03 DOI: 10.1109/RAICS.2011.6069287
M. Sinith, M. N. Nair, Niveditha P. Nair, S. Parvathy
This paper, presents a new approach in Blind Source Separation (BSS) using identified wavelets in musical instruments as window function in the Degenerate Unmixing Estimation Technique (DUET) algorithm. the scaling function and the wavelet functions of the wavelets present in musical instruments, violin and flute is presented. NLMS algorithm is used to identify the filter bank coefficients of wavelet-like elements, found repeating in musical notes of the instruments. Scaling functions of the standard wavelets are also found out by an iterative manner using NLMS algorithm. wavelets for different musical instruments are developed. The obtained wavelets are utilized in the DUET algorithm to achieve the goal of BSS to the mixed source of music instruments signals.
本文提出了一种新的盲源分离(BSS)方法,将乐器中识别出的小波作为退化解混估计技术(DUET)算法的窗函数。给出了乐器、小提琴和长笛中存在的小波的尺度函数和小波函数。NLMS算法用于识别在乐器音符中发现重复的类小波元素的滤波器组系数。采用NLMS算法迭代求出标准小波的尺度函数。开发了适用于不同乐器的小波。将得到的小波应用到DUET算法中,实现对乐器信号混合源的BSS。
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引用次数: 3
Design and implementation of surfing scheme to wave pipelined differential serial interconnect 波浪流水差分串行互连冲浪方案的设计与实现
Pub Date : 2011-11-03 DOI: 10.1109/RAICS.2011.6069308
M. Bhaskar, D. Parthiban, B. Venkataramani
In literature, surfing scheme has been used in wave pipelined serial interconnects to decrease the delay and ensure transmission reliability. In this paper, a “Controllable inverter pair” is proposed for surfing the differential wave pipelined serial interconnects. The proposed surfing scheme is implemented in UMC 0.18µm technology and the post layout performance is studied through simulation in Cadence spectre tool. The performance of the new scheme is compared with that of a single ended wave-pipelined link with surfing. The proposed scheme permits the data transmission rate of 2.78Gbps and it is higher by a factor of 2.08 compared to the single ended scheme. It also does not require any set up time constraints unlike single ended scheme, where the surfing signal must be ascertained before the data signal about one fourth of the data period.
文献中,为了降低时延,保证传输的可靠性,在波浪管道串行互连中采用了冲浪方案。本文提出了一种“可控逆变器对”,用于差动波并联串行互连。在UMC 0.18µm技术上实现了所提出的冲浪方案,并在Cadence光谱工具中进行了仿真研究。将新方案的性能与带冲浪的单端波浪管道链路的性能进行了比较。该方案允许的数据传输速率为2.78Gbps,比单端方案高2.08倍。它也不需要任何设置时间限制,不像单端方案,冲浪信号必须在数据信号之前确定大约四分之一的数据周期。
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引用次数: 4
An e-commerce security solution using MJ2-RSA Digital Signature 使用MJ2-RSA数字签名的电子商务安全解决方案
Pub Date : 2011-11-03 DOI: 10.1109/RAICS.2011.6069343
E. Madhusudhana Reddy, K. Suresh Kumar Reddy, M. Padmavathamma
Digital Signature Scheme is very useful in communication between parties. We studied new applications of Jordon-Totient function and applied them to RSA Digital Signature Scheme and developed protocols for communication between two parties using java and shown the graphical performance analysis on test results for key generation time, encryption time and decryption time respectively.
数字签名方案在各方之间的通信中非常有用。研究了jordan - totient函数的新应用,并将其应用于RSA数字签名方案中,利用java开发了双方通信协议,并分别对密钥生成时间、加密时间和解密时间的测试结果进行了图形化的性能分析。
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引用次数: 0
MWPSNR: A new image fidelity metric MWPSNR:一种新的图像保真度度量
Pub Date : 2011-11-03 DOI: 10.1109/RAICS.2011.6069386
K. A. Navas, D. Gayathri, M. Athulya, Anjali Vasudev
Researchers in the field of image and video processing use MSE (Mean Square Error) based fidelity metrics to validate their research results. The most popular MSE-based metrics are PSNR (Peak Signal to Noise Ratio) and WPSNR (Weighted Peak Signal to Noise Ratio). When large quantities of data are to be assessed, subjective metric such as MOS (Mean Opinion Score) is not pragmatic since it needs experts and inordinate amount of time. PSNR and WPSNR are independent of Human Visual System (HVS) parameters and hence they are inappropriate scales to measure potential research results. This paper brings out their inappropriateness and propose a new image fidelity metric called Modified Weighted Peak Signal to Noise Ratio (MWPSNR). This metric has been experimentally proven to be better than PSNR and WPSNR.
图像和视频处理领域的研究人员使用基于均方误差(MSE)的保真度度量来验证他们的研究结果。最流行的基于mse的指标是PSNR(峰值信噪比)和WPSNR(加权峰值信噪比)。当需要评估大量数据时,主观度量(如MOS (Mean Opinion Score))并不实用,因为它需要专家和过多的时间。PSNR和WPSNR与人类视觉系统(HVS)参数无关,因此不适合作为衡量潜在研究结果的尺度。提出了一种新的图像保真度度量方法——改进加权峰值信噪比(MWPSNR)。该指标已被实验证明优于PSNR和WPSNR。
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引用次数: 13
Cluster Head Gateway approach using in Integrated Mobile Ad hoc Network 集束头网关方法在移动自组网中的应用
Pub Date : 2011-11-03 DOI: 10.1109/RAICS.2011.6069391
A. Bagwari, S. Bisht
Mobile Ad Hoc Network (MANET) consists of dynamic topology as nodes in the network are mobile, and connected via wireless links. Nodes within the cluster communicate directly. However, nodes communicate outside the cluster through a centralized node that is called a Cluster Head Gateway (CHG) [1]. As the number of nodes increases complexity of MANET increases in various issues. Ad hoc wireless network is a dynamic multi-hop network, which is established by a group of mobile nodes on a shared wireless channel. The shared medium and the multi-hop nature of the wireless ad hoc networks pose fundamental challenges to the design of an effective resource allocation algorithm to maximize the aggregated utility of flows, maintaining basic fairness among the multiple flows. An elected Cluster Head Gateway (CHG) is assigned for communication with all other clusters. The centralized Cluster Head Gateway can become a bottleneck and possibly cause a lower connectivity for the clustering system. In this paper we propose a mechanism in which communication outside the cluster is distributed through separate Cluster Head Gateways. We will discuss how the averaged connectivity for the clustering system increases considerably. We also show that the increase in overall connectivity is by the increase/add Cluster Head Gateways. Additionally, the routing reliability to outside the cluster is increased since routes to different clusters use distinct Cluster Head Gateways. Finally, this paper conducts simulation experiments in the conditions where we using Multiple CHG to the nodes within a network.
移动自组网(MANET)由动态拓扑结构组成,网络中的节点是移动的,并且通过无线链路连接。集群内的节点直接通信。然而,节点通过一个称为集群头网关(CHG)的集中式节点在集群外部通信[1]。随着节点数量的增加,MANET在各种问题上的复杂性也在增加。自组织无线网络是一种动态多跳网络,它是由一组移动节点在一个共享的无线信道上建立起来的。无线自组织网络的共享介质和多跳特性对设计有效的资源分配算法提出了根本性的挑战,以最大化流的聚合效用,保持多流之间的基本公平性。指定一个选举的集群头网关(CHG)用于与所有其他集群通信。集中式簇头网关可能成为瓶颈,并可能导致集群系统的连通性降低。在本文中,我们提出了一种机制,其中集群外的通信通过单独的集群头网关分发。我们将讨论集群系统的平均连通性如何显著增加。我们还表明,总体连接性的增加是通过增加/添加簇头网关来实现的。此外,由于到不同集群的路由使用不同的簇头网关,因此增加了到集群外部的路由可靠性。最后,本文在对网络内节点使用多个CHG的情况下进行了仿真实验。
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引用次数: 3
期刊
2011 IEEE Recent Advances in Intelligent Computational Systems
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