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2016 International Conference on Robotics, Automation and Sciences (ICORAS)最新文献

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Signal-to-noise ratio estimation technique for SEM image using B-spline 基于b样条的扫描电镜图像信噪比估计技术
Pub Date : 2016-11-01 DOI: 10.1109/ICORAS.2016.7872617
Z. X. Yeap, K. Sim, C. Tso
A new signal-to-noise ratio (SNR) estimation technique is proposed for the scanning electron microscope image. Based on only a single image, an estimation technique named B-spline is proposed. Three existing techniques are applied to compare with the performance of the proposed method in terms of the zero-offset point, SNR and percentage error. They are the nearest neighborhood, first order interpolation, and a combination of these two methods. A t-test is conducted on the proposed method. Noise variance is estimated from the SNR calculated and a Wiener filter will be used to filter the noise with the filtered images being similar to noise-free images.
提出了一种新的扫描电镜图像信噪比估计方法。提出了一种基于单幅图像的b样条估计方法。利用现有的三种方法,从零偏移点、信噪比和百分比误差等方面与所提方法的性能进行了比较。它们是最近邻法、一阶插值法以及这两种方法的结合。对所提出的方法进行了t检验。从计算的信噪比中估计噪声方差,并使用维纳滤波器对噪声进行滤波,使滤波后的图像与无噪声图像相似。
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引用次数: 1
Investigation of electrochemical characterization of agarose gel for model of human head correlated to lightning currents 雷电电流相关人体头部模型琼脂糖凝胶的电化学表征研究
Pub Date : 2016-11-01 DOI: 10.1109/ICORAS.2016.7872622
N. Yusof, E. Supriyanto, D. Dewi
Problems arisen in biomedical field have given an influence to the development of engineering devices which can especially solve special problems. Lightning injury is one of the special cases occurred that has some reasons which are not yet understood. Tissue diagnostic procedure is really beneficial in treating the diseases; hence further study concerning this procedure is required in electrochemical measurements. Electrical properties of tissue are the primary properties for the study in the current distribution through human body which is correlated to lightning current. Based on previous studies, human head is always the common contact point of lightning injury. Thus, this leads to the investigations of corresponding lightning injury through human body. This thesis focuses on the fabrication of tissue samples including the brain, skull and scalp phantom as a human head model. The fabrication is characterized based on electrochemical impedance spectroscopy (EIS) measurements against the frequency range from 100Hz to 1MHz to recognize the electrical properties and analyze the ion charge distribution by the diffusion rate of tissue phantom samples to contribute the stability poses. The measurements are conducted to determine the electrical conductivity, resistivity, relative permittivity and dissipation factor that affect the concentration of electrolyte. From this research, it is verified that the electrical properties show a comparable result with previous studies. It is also proven that the diffusion rate accelerates in higher concentration of solvent, confirming that all tissue phantoms are stable according to the tissue properties.
生物医学领域中出现的问题影响着能够解决特殊问题的工程装置的发展。雷击伤害是雷电灾害发生的特殊情况之一,其原因尚不清楚。组织诊断程序对疾病的治疗是有益的;因此,在电化学测量中需要对这一过程进行进一步的研究。组织的电学性质是研究人体电流分布的主要性质,而人体电流分布与雷击电流有关。根据以往的研究,人体头部一直是雷击伤害的常见接触点。由此,引出相应的雷击经人体损伤的研究。本论文主要研究脑、颅骨和头皮幻影等组织样本的制备作为人体头部模型。利用电化学阻抗谱(EIS)在100Hz ~ 1MHz的频率范围内对制备过程进行表征,以识别组织模体样品的电学特性,并通过组织模体样品的扩散速率分析离子电荷分布,从而得出组织模体样品的稳定性姿态。通过测量来确定影响电解液浓度的电导率、电阻率、相对介电常数和耗散系数。通过本研究,验证了该材料的电学性能与以往的研究结果相当。同时也证明了在较高浓度的溶剂中扩散速率加快,证实了所有组织模态根据组织性质都是稳定的。
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引用次数: 0
Classification of EEG signals for brain-computer interface applications: Performance comparison 脑机接口应用的脑电信号分类:性能比较
Pub Date : 2016-11-01 DOI: 10.1109/ICORAS.2016.7872610
M. Z. Ilyas, P. Saad, M. I. Ahmad, A. Ghani
This paper presents a comparison of Electroencephalogram (EEG) signals classification for Brain Computer-Interfaces (BCI). At present, it is a challenging task to extract the meaningful EEG signal patterns from a large volume of poor quality data and simultaneously with the presence of artifacts noises. Selection of the effective classification technique of the EEG signals at classification stage is very important to get the robust BCI system. Support Vector Machine (SVM), k-Nearest Neighbour (k-NN), Multi-Layer Perceptron Artificial Neural Network (MLP-ANN) and Logistic Regression (LR) were evaluated in this paper. A BCI competition IV — Dataset 1 is used for testing the classifiers. It is shown that LR and SVM are the most efficient classifier with the highest accuracy of 73.03% and 68.97%.
本文对脑机接口(BCI)的脑电信号分类进行了比较。目前,如何从大量低质量的数据中提取有意义的脑电信号模式是一项具有挑战性的任务。在脑电信号分类阶段选择有效的分类技术是获得鲁棒脑机接口系统的关键。本文对支持向量机(SVM)、k-近邻(k-NN)、多层感知器人工神经网络(MLP-ANN)和逻辑回归(LR)进行了评价。BCI竞赛IV -数据集1用于测试分类器。结果表明,LR和SVM是最有效的分类器,准确率分别为73.03%和68.97%。
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引用次数: 30
A rapid medical image noise variance estimation method 一种快速的医学图像噪声方差估计方法
Pub Date : 2016-11-01 DOI: 10.1109/ICORAS.2016.7872628
F. F. Ting, K. Sim, E. K. Wong
Noise in medical images may affect the result of clinical diagnosis. We propose a rapid noise variances estimation method named Gabor Wavelet Laplacian convolution (GWLC). This method allows rapid estimation of image noise variance without complex calculation. We exclude unwanted image edge lines through Gabor wavelet transform edge detection. Henceforth, we can estimate the noise variance of the image through GWLC. A performance comparison between our proposed method and referred method are carried out. GWLC outperforms other related methods.
医学图像中的噪声会影响临床诊断的结果。提出了一种快速的噪声方差估计方法——Gabor小波拉普拉斯卷积(GWLC)。该方法可以快速估计图像噪声方差,无需复杂的计算。我们通过Gabor小波变换边缘检测排除不需要的图像边缘线。因此,我们可以通过GWLC估计图像的噪声方差。将本文提出的方法与参考方法进行了性能比较。GWLC优于其他相关方法。
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引用次数: 6
Signal-to-noise ratio estimation technique for SEM image using linear regression 基于线性回归的扫描电镜图像信噪比估计技术
Pub Date : 2016-11-01 DOI: 10.1109/ICORAS.2016.7872602
Z. X. Yeap, K. Sim, C. Tso
This paper proposes a new signal-to-noise ratio (SNR) estimation technique on scanning electron microscope (SEM) image, using linear regression. The method is based on the single image approach. Four good quality images are used to compare the proposed method and the existing methods: nearest neighborhood, first order interpolation and piecewise cubic Hermite interpolation. The results are compared in terms of estimation peaks, SNR and SNR in dB. In this paper four random selected images are used to present the performance of the proposed method. The method gives better estimation compared to existing methods. Statistical test shows that the estimation results are similar to the original.
提出了一种基于线性回归的扫描电镜图像信噪比估计方法。该方法基于单图像方法。用四幅高质量图像与现有的最近邻插值法、一阶插值法和分段三次埃尔米特插值法进行比较。在估计峰值、信噪比和信噪比(dB)方面对结果进行了比较。本文用随机选择的四幅图像来展示该方法的性能。与现有方法相比,该方法具有更好的估计效果。统计检验表明,估计结果与原模型相近。
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引用次数: 2
Improving iterative back projection super resolution model via anisotropic diffusion edge enhancement 利用各向异性扩散边缘增强改进迭代反投影超分辨模型
Pub Date : 2016-11-01 DOI: 10.1109/ICORAS.2016.7872612
A. Nazren, S. Yaakob, R. Ngadiran, M. B. Hisham, N. M. Wafi
This improving technique based on combining an Iterative Back Projection (IBP) super resolution method with Anisotropic Diffusion (AD) technique for overcoming IBP weaknesses. The IBP has specialty to remove a reconstruction error and blurry effect iteratively manner in image registration place. However, it has a weakness from avoiding result image from chessboard effect and lost high frequency information. For this reason, this super resolution approach requires an edge enhancement technique to complement the weakness. Anisotropic diffusion is edge enhancement techniques and it has benefited to estimate a piecewise smooth image from a noisy input image. This paper proposed to integrate Anisotropic Diffusion techniques in IBP registration stages with an improvement in the IBP flow process model. This improvement in IBP model produced a result image in better appearing output with preserves high frequency information and less number of iteration process reconstruction.
该改进技术将迭代反投影(IBP)超分辨方法与各向异性扩散(AD)技术相结合,克服了IBP的缺点。该方法在图像配准位置具有迭代消除重建误差和模糊效果的特点。但其缺点是避免了棋盘效应的结果图像,丢失了高频信息。因此,这种超分辨率方法需要一种边缘增强技术来弥补这一弱点。各向异性扩散是一种边缘增强技术,它有利于从噪声输入图像中估计出分段平滑图像。本文提出将各向异性扩散技术应用于IBP配准阶段,并对IBP流过程模型进行改进。通过对IBP模型的改进,在保留高频信息的基础上,减少了迭代过程重构的次数,得到了更好的输出结果图像。
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引用次数: 5
Potentiality of small wind turbines along highway in Malaysia 马来西亚高速公路沿线小型风力涡轮机的潜力
Pub Date : 2016-11-01 DOI: 10.1109/ICORAS.2016.7872634
A. A. Al-Aqel, B. Lim, E. E. M. Noor, Tze Chuen Yap, S. Alkaff
Vehicle-induced turbulent airflow by the traffic in the highways is one of the sources of wind energy which can be harvested to supply the power to the highway lighting and telecommunication signaling. This work focuses on the assessment of potentiality of implementing small scale wind turbines along the highways in Malaysia. The study was started by conducting wind speed measurements adjacent to the highway at Lebuh SPA (Sungai Udang — Paya Rumput — Ayer Keroh Highway), a major highway in Malacca state, Malaysia. Three positional parameters have been investigated for suitable placement of the wind turbines. They are: the lateral distances from the road shoulder, the heights from the ground, and the orientation of the wind turbines relatives to the road. The former two parameters were set at 0.5 m, 1.0 m and 1.5 m for each position; while the latter was varied at perpendicular, 45°, and parallel to the road. The measurements were conducted using hot-wire anemometers. The results showed that the optimum positions for the wind turbine is at 1.0 m from the lateral distance and the height above the ground, respectively, and the optimum orientation is found to be 45° from the road at which the horizontal axis wind turbines (HAWT) can be directed. The large size vehicles such as lorries and busses were observed to produce higher wind speed as compared to the smaller ones. The results were further verified by using numerical simulation work through ANSYS Fluent.
高速公路上车辆引起的湍流气流是风能的来源之一,可以收集风能为公路照明和通信信号供电。这项工作的重点是评估在马来西亚高速公路沿线实施小型风力涡轮机的潜力。这项研究是通过在马来西亚马六甲州的一条主要高速公路Lebuh SPA (Sungai Udang - Paya Rumput - Ayer Keroh高速公路)附近进行风速测量开始的。研究了三个位置参数,以确定风力发电机的合适位置。它们是:离路肩的横向距离,离地面的高度,以及风力涡轮机相对于道路的方向。前两个参数分别设置为0.5 m、1.0 m和1.5 m;而后者则在与道路垂直、45°、平行的方向上变化。测量使用热线风速计进行。结果表明:风力机的最佳位置为距地面横向距离1.0 m处,距地面高度1.0 m处,水平轴风力机(HAWT)的最佳方向为距道路45°处。据观察,卡车和巴士等大型车辆比小型车辆产生更高的风速。通过ANSYS Fluent进行数值模拟工作,进一步验证了结果。
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引用次数: 14
Adaptive pixel targeting and filtering with adjacency variations in second-order derivatives of pixel values for SEM images 扫描电镜图像像素值二阶导数邻接变化的自适应像素定位与滤波
Pub Date : 2016-11-01 DOI: 10.1109/ICORAS.2016.7872624
W. T. Chan, Kok-Swee Sim
The proposed method utilizes histograms of second-order derivatives of the values of the pixels in an SEM image. The histograms of second-order values can express the variation in pixel values due to the effect of noise. The histograms are used as the basis for a technique to target pixels for filtering. To control the number of pixels which are targeted so as to minimize blurring of edges, a curve-fitted profile is imposed on the histograms in order to select pixels based on the differences between their second-order derivatives and those of their neighbours. The proposed method is found to be more effective at higher levels of additive noise.
该方法利用扫描电镜图像中像素值的二阶导数直方图。二阶值直方图可以表达像素值在噪声影响下的变化。直方图被用作目标像素滤波技术的基础。为了控制目标像素的数量,以最小化边缘模糊,在直方图上施加曲线拟合轮廓,以便根据其二阶导数与其相邻的二阶导数之间的差异来选择像素。结果表明,该方法在较高的加性噪声水平下更为有效。
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引用次数: 1
Threading implementation on different hardware for travel time estimation purpose 在不同硬件上的线程实现,用于行程时间估计
Pub Date : 2016-11-01 DOI: 10.1109/ICORAS.2016.7872607
I. Iszaidy, R. Ngadiran, R. B. Ahmad, M. Jais, D. Shuhaizar
The travel time estimation is one of traffic management system which provide time taken from one point to another point. Travel time estimation system consists of an embedded platform with image sensor for detecting and tracking the vehicle. Due to limited resources of embedded board, it makes challenging to measure the travel time especially for fast moving vehicle. Capturing system required a high capturing rate of the camera to capture most current frame for fast moving vehicle. Threading is implemented in this system to improve embedded board resource utilization and input-output latency between camera and embedded board. In this paper, the threading technology is applied to two types of Raspberry Pi model and the performance of the embedded board is recorded and analyzed.
行车时间估计是交通管理系统中提供从一个点到另一个点所需时间的一种方法。行程时间估计系统由一个嵌入式平台和用于检测和跟踪车辆的图像传感器组成。由于嵌入式电路板的资源有限,对于快速移动的车辆来说,行驶时间的测量具有挑战性。捕捉系统要求相机具有较高的捕捉速率,以捕捉快速移动车辆的最新画面。为了提高嵌入式板的资源利用率,降低摄像机与嵌入式板之间的输入输出延迟,本系统实现了线程化。本文将线程技术应用于两种树莓派模型,并对嵌入式板的性能进行了记录和分析。
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引用次数: 0
Kinect-based framework for enhanced learning of disabled students 促进残疾学生学习的kinect框架
Pub Date : 2016-11-01 DOI: 10.1109/ICORAS.2016.7872608
M. S. M. Too, P. T. Ong, S. H. Lau, R. K. Y. Chang, K. S. Sim
Educating students with disabilities is different from those without disabilities. Students with disabilities would require modifications and different methods of teaching thin the traditional method. Current learning methods in Malaysia make use of the traditional pencil-and-paper method, which is a hassle. Furthermore, the different styles of learning are often neglected. Although there are attempts to use other learning tools to assist these students, they are often costly. This paper proposes an alternative learning method via Microsoft Kinect. An overview of the research framework and proposed system will be detailed. The expected main outcome from this project is the design of the proposed cost effective framework using Kinect. The framework would include new alternative method of delivering subjects to physically disabled students rather than the current method. The proposed framework also contributes to the motivation factors that drive the students to perform, and the suitability of multiple learning styles utilizing the same classroom tool.
对残疾学生的教育不同于对健全学生的教育。残疾学生将需要修改和不同的教学方法,而不是传统的方法。马来西亚目前的学习方法是使用传统的铅笔和纸的方法,这是一个麻烦。此外,不同的学习方式往往被忽视。尽管有人尝试使用其他学习工具来帮助这些学生,但它们通常是昂贵的。本文提出了一种基于微软Kinect的替代学习方法。将详细概述研究框架和拟议系统。这个项目的预期主要成果是使用Kinect设计出具有成本效益的框架。该框架将包括向身体残疾学生提供课程的新替代方法,而不是目前的方法。所提出的框架还有助于推动学生表现的动机因素,以及使用相同课堂工具的多种学习风格的适用性。
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引用次数: 3
期刊
2016 International Conference on Robotics, Automation and Sciences (ICORAS)
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