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2022 30th Signal Processing and Communications Applications Conference (SIU)最新文献

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Fiber Optic Cable Termination and Signal Loss Detection in DAS Systems DAS系统中的光纤终端和信号丢失检测
Pub Date : 2022-05-15 DOI: 10.1109/SIU55565.2022.9864838
Abdulsamet Dagasan, Mustafa Akur, Mehmet Umut Demircin
Fiber Optic Distributed Acoustic Sensing (DAS) Systems use standard telecommunication fibers to detect acoustic vibrations up to 50 kms along the cable. In this paper we propose algorithms to detect fiber optic cable termination points and optical signal losses using DAS data. Proposed algorithms add traditional Optical Time-Domain Reflectometer (OTDR) measurement functionality to the DAS systems. Cable termination detection algorithm models the noise data in DAS signal that consists of electronic noise [e.g. Analog-to-Digital Converter (ADC) noises] and optical laser reflection noise. The cable termination detection algorithm analyzes noise statistics of the sensor data and finds the location where optic noise is no longer present. Signal loss detection algorithm first eliminates the environmental acoustic noise from the DAS signal; then, change point detection algorithm is applied to detect locations where significant signal loss occurs. Proposed algorithms are tested in various DAS installations in Turkey. Predicted cable termination and signal loss locations agree with OTDR measurements.
光纤分布式声学传感(DAS)系统使用标准的电信光纤来检测沿着电缆长达50公里的声学振动。本文提出了利用DAS数据检测光缆终端点和光信号损耗的算法。提出的算法将传统的光时域反射计(OTDR)测量功能添加到DAS系统中。电缆终端检测算法对DAS信号中的噪声数据进行建模,该数据由电子噪声(例如模数转换器(ADC)噪声)和光学激光反射噪声组成。电缆终端检测算法通过分析传感器数据的噪声统计,找到不再存在光噪声的位置。信号丢失检测算法首先消除DAS信号中的环境噪声;然后,采用变化点检测算法检测信号丢失明显的位置。提出的算法在土耳其的各种DAS装置中进行了测试。预测的电缆终端和信号丢失位置与OTDR测量结果一致。
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引用次数: 0
Unimpeded Walking with Deep Learning 用深度学习畅行无阻
Pub Date : 2022-05-15 DOI: 10.1109/SIU55565.2022.9864703
Erdem Bayhan, Cenk Berkan Deligoz, Feride Seymen, Mustafa Namdar, Arif Basgumus
In this study, the detection of the objects that they may encounter with deep learning models and the methods of the tactile paving surface tracking with Hough’s theorem are presented so that visually impaired individuals can easily walk outdoors. In the proposed approach, the training is primarily realized for machine learning of the deep learning models. The Faster R-CNN model and the SSD MobileNetV2 model are used in the training, and the accuracy performances of these two models are compared. During the training phase of the two models, a data set is generated using real-time and internet-based photographs. The training is completed by making use of 3653 photographs for 11 different objects that visually impaired individuals may encounter. In the detection of the objects, the accuracy rate of Faster R-CNN model is approximately 91%, and the SSD MobileNetV2 model achieved approximately 93% success. In addition, with the help of Hough’s theorem, it is observed that the edge surface lines are followed correctly in the tracking of the tactile paving surfaces.
本研究提出了利用深度学习模型对视障人士可能遇到的物体进行检测,并利用霍夫定理对触觉铺路面进行跟踪的方法,使视障人士能够轻松地在户外行走。在本文提出的方法中,主要实现深度学习模型的机器学习训练。采用Faster R-CNN模型和SSD MobileNetV2模型进行训练,比较了两种模型的准确率性能。在两个模型的训练阶段,使用实时和基于互联网的照片生成数据集。培训是通过使用3653张照片来完成的,这些照片是针对视障人士可能遇到的11种不同物体的。在物体的检测中,Faster R-CNN模型的准确率约为91%,SSD MobileNetV2模型的准确率约为93%。此外,借助霍夫定理,观察到在触觉铺装面跟踪中,边缘面线是正确遵循的。
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引用次数: 0
5G Network Slicing using Machine Learning Techniques 使用机器学习技术的5G网络切片
Pub Date : 2022-05-15 DOI: 10.1109/SIU55565.2022.9864770
Alper Endes, Baris Yuksekkaya
Communication systems to be delivered with the Fifth Generation (Fifth Generation, 5G) are expected to meet the requirements of high reliability, low delay, high security, high capacity, and high-speed. Mobile providers are looking for programmable solutions to provide numerous different services, and the 5G network structure provides a solution to this need using Network Slicing. In this study, artificial intelligence-based machine learning algorithms and methods of placing users in communication slices were examined by creating realistic user and base station data. Considered communication slices were selected as advanced mobile network (enhanced Mobile Broadband, eMBB), large-scale machine-type communication (mMTC), and ultra-low-latency data communication (Ultra-Reliable Low Latency Communications, URLLC). Two different machine learning models were created and tested in the proposed simulation environment, and their performances were compared.
随着第五代(第五代,5G)交付的通信系统预计将满足高可靠、低延迟、高安全、高容量和高速的要求。移动提供商正在寻找可编程的解决方案来提供多种不同的服务,而5G网络结构使用网络切片为这一需求提供了解决方案。在本研究中,通过创建真实的用户和基站数据,研究了基于人工智能的机器学习算法和将用户置于通信切片中的方法。考虑的通信切片选择为高级移动网络(增强型移动宽带,eMBB)、大型机器类型通信(mMTC)和超低延迟数据通信(超可靠低延迟通信,URLLC)。建立了两种不同的机器学习模型,并在提出的仿真环境中进行了测试,并比较了它们的性能。
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引用次数: 1
Comparison of Different Intelligent Reflective Surface Designs in terms of Beam Properties at Sub-Terahertz Frequencies 基于亚太赫兹波束特性的不同智能反射表面设计比较
Pub Date : 2022-05-15 DOI: 10.1109/SIU55565.2022.9864679
Ada Irem Pekdemir, Ö. Özdemir, G. Kurt
Terahertz (THz) communication is one of the remarkable topics in the field of communication. Terahertz communication, which is one of the promising topics in meeting the rapidly increasing number of devices and the need for data speed and channel capacity, aims to increase the wireless communication frequency band up to terahertz level. When the terahertz frequency is used the wavelength decreases significantly, which causes electromagnetic waves to be more affected by the channel effects. There must be a clear line of sight (LOS) between the transmitter and the receiver in THz communication systems and the electromagnetic wave sent must be highly directive. The use of intelligent reflective surfaces in the terahertz band can provide advantages in the reflected wave being more directive. In this study, different Intelligent Reflective Surface designs in the literature are implemented and a performance comparison is presented in terms of beam characteristics.
太赫兹(THz)通信是通信领域中引人注目的话题之一。太赫兹通信旨在将无线通信频段提高到太赫兹水平,是满足设备数量快速增长、对数据速度和信道容量需求的一个有前途的课题。当使用太赫兹频率时,波长明显减少,这导致电磁波更受信道效应的影响。在太赫兹通信系统中,发射器和接收器之间必须有清晰的视线(LOS),并且发射的电磁波必须具有高度的指导性。在太赫兹波段使用智能反射面可以提供反射波更有方向性的优势。在本研究中,实现了文献中不同的智能反射表面设计,并在光束特性方面进行了性能比较。
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引用次数: 0
Texture Analysis by Deep Twin Networks for Paper Fraud Detection 基于深度孪生网络的纹理分析用于纸张欺诈检测
Pub Date : 2022-05-15 DOI: 10.1109/SIU55565.2022.9864968
Ezgi Ekiz, Erol Sahin, F. Vural
This study proposes a method to distinguish fake documents from the originals using the textural structures of the papers they are printed on. The study is based on observations showing that paper textures are different and unique, just like fingerprint and iris tissue. This method, which captures the visually distinctive features of paper textures, can detect whether the documents of which the origin is suspected are fake or not. The proposed method can measure Type-2 error by training a Siamese network and thresholding the similarity results between two papers. Experimental results show that the proposed method has better distinguishing features than classical methods.
本研究提出了一种方法,以区分假文件从原件使用的纸张的纹理结构,他们被印在。这项研究是基于观察发现,纸的纹理是不同的,独特的,就像指纹和虹膜组织一样。该方法通过捕捉纸张纹理在视觉上的显著特征,可以检测出怀疑真伪的文件。该方法通过训练Siamese网络并对两篇论文的相似度结果进行阈值化来测量Type-2误差。实验结果表明,该方法比经典方法具有更好的识别特征。
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引用次数: 0
Anomaly Detection in Surveillance Videos Using Regression With Recurrent Neural Networks 基于回归神经网络的监控视频异常检测
Pub Date : 2022-05-15 DOI: 10.1109/SIU55565.2022.9864893
Mehmet Yagan, E. Yilmaz, H. Özkan
Security cameras are widely used to detect and prevent crimes, but the number of surveillance videos has increased due to this prevalence. By processing these videos with the help of a suitable machine learning algorithm, unfavorable events can be brought to the attention of expert to manually monitor. Since these unfavorable events are of various types and few in number, this problem can be addressed in the anomaly detection structure. In this study, an anomaly detection algorithm has been developed using the UCF-Crime dataset consisting of 1900 surveillance videos of various lengths. First of all, features were extracted from these videos with the help of a pre-trained artificial neural network (ANN), the size of these features was reduced with another ANN, and the anomaly detection was performed using two different recurrent neural networks, one based on classification and the other based on future feature estimation by regression. Area under receiver operating characteristic (ROC) curve (AUC) was used as the evaluation criterion. At video level, regression method gives a better performance with 88.71% AUC than the classification method which only gives 85.82% AUC, while at video frame level, both methods perform similarly with 73.64% and 73.71%, but there are true positive rate ranges where they perform better than each other.
监控摄像机被广泛用于侦查和预防犯罪,但监控视频的数量也因此增加。通过适当的机器学习算法对这些视频进行处理,可以将不利事件引起专家的注意,进行人工监控。由于这些不利事件类型多,数量少,因此可以在异常检测结构中解决这一问题。在本研究中,使用由1900个不同长度的监控视频组成的UCF-Crime数据集开发了一种异常检测算法。首先,利用预训练的人工神经网络(ANN)从这些视频中提取特征,用另一个人工神经网络对这些特征进行缩减,并使用两种不同的递归神经网络进行异常检测,一种基于分类,另一种基于回归的未来特征估计。以受试者工作特征曲线下面积(AUC)作为评价标准。在视频级别,回归方法的AUC为88.71%,优于分类方法的85.82%,而在视频帧级别,两种方法的AUC分别为73.64%和73.71%,但在真阳性率范围内,它们的表现优于彼此。
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引用次数: 0
Performance of SCMA Systems in Fast-Fading Channels 快速衰落信道中SCMA系统的性能研究
Pub Date : 2022-05-15 DOI: 10.1109/SIU55565.2022.9864758
Tolga Tüfekçi, Oguz Ülgen, Serhat Erküçük, T. Baykaş
In order to satisfy the need for high data rate and high number of users, new generation communication techniques are developed. One of the techniques that may be used in future generation communication networks is Sparse Code Multiple Access (SCMA). With this new technique, the aim is to allocate users frequency resources in a non-orthogonal way by using code books. For this new technique, which is has a potential to be used in 5G and beyond communication networks, most researches have focused on flat fading channels and related results have been provided. In this work, different from earlier studies, fast fading channels have been considered for channels varying at different rates, and bit-error performance results have been provided with computer simulations.
为了满足高数据速率和高用户数的需求,新一代通信技术得到了发展。稀疏码多址(SCMA)是下一代通信网络中可能使用的技术之一。这种新技术的目的是利用代码本以非正交的方式分配用户频率资源。对于这种在5G及以后的通信网络中具有应用潜力的新技术,大多数研究都集中在平坦衰落信道上,并提供了相关结果。在这项工作中,与以往的研究不同,在不同速率的信道中考虑了快速衰落信道,并提供了计算机模拟的误码性能结果。
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引用次数: 0
Classification of Moving Ground Targets Using Measurement from Accelerometer on Road Surface 基于路面加速度计测量的移动地面目标分类
Pub Date : 2022-05-15 DOI: 10.1109/SIU55565.2022.9864775
Ismail Can Büyüktepe, A. K. Hocaoglu
In this study, an algorithm that can classify human and car has been developed by using vibration signals obtained from a three-axis accelerometer sensor station placed on three different floors. Data were collected over soil, asphalt and concrete ground. As classifiers, k-Nearest Neighbor classifier (k-NN) and Support Vector Machine (SVM) classifiers are used. Using classifiers alone limits classification performance. A two-stage classifier model has been proposed to improve the classification performance. The classifier model, which is proposed in two stages, detects the presence of motion in the first stage. In the second stage, it performs the classification of moving targets. As a result of the experimental studies, it has been shown that the proposed two-stage classifier model improves the performance in solving the problem.
在本研究中,利用三轴加速度计传感器站在三个不同的楼层获得的振动信号,开发了一种可以区分人和车的算法。数据收集在土壤、沥青和混凝土地面上。分类器使用k-最近邻分类器(k-NN)和支持向量机分类器(SVM)。单独使用分类器会限制分类性能。为了提高分类性能,提出了一种两阶段分类器模型。该分类器模型分两个阶段提出,在第一阶段检测运动的存在。第二阶段,对运动目标进行分类。实验结果表明,所提出的两阶段分类器模型在解决这一问题时提高了性能。
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引用次数: 0
The Effect of SAR Speckle Removal in SAR-Optical Image Fusion SAR散斑去除在SAR-光学图像融合中的作用
Pub Date : 2022-05-15 DOI: 10.1109/SIU55565.2022.9864861
Semih Gencay, Caner Özcan
Due to the imaging mechanism of Synthetic Aperture Radar (SAR) and the noise in the images, visual identification of objects in the scene is not as easy as in optical images. SAR images have limited color information and cannot reflect the spectral information of objects. Optical images, on the other hand, have rich spectral information. SAR-Optical image fusion is an important area of study so that SAR data can be easily evaluated by anyone, but it is difficult to find a matching SAR and optical image of the same scene. In order to overcome this difficulty, Sentinel-1 and Sentinel-2 datasets have been published and image fusion studies have been carried out with various methods. However, it has been observed that the effect of SAR noise removal before merging on image fusion methods has not been investigated. In the studies conducted to investigate this effect, five different fusion algorithms used in the literature were tested with twenty different image groups using different noise reduction ratios. The success of the fusion results obtained was compared with five different metrics that are widely used in the literature. The images and metric results obtained as a result of the tests showed that the removal of speckle noise in the SAR data has a positive effect on the fusion results.
由于合成孔径雷达(SAR)的成像机理和图像中的噪声,对场景中的目标进行视觉识别并不像在光学图像中那样容易。SAR图像的颜色信息有限,不能反映物体的光谱信息。另一方面,光学图像具有丰富的光谱信息。SAR-光学图像融合是一个重要的研究领域,它使任何人都可以方便地对SAR数据进行评估,但很难找到相同场景的匹配SAR和光学图像。为了克服这一困难,已经发表了Sentinel-1和Sentinel-2数据集,并使用各种方法进行了图像融合研究。然而,合并前去除SAR噪声对图像融合方法的影响尚未得到研究。在研究这种影响的研究中,使用了文献中使用的五种不同的融合算法,使用不同的降噪比对20种不同的图像组进行了测试。所获得的融合结果的成功与文献中广泛使用的五种不同指标进行了比较。实验得到的图像和度量结果表明,去除SAR数据中的散斑噪声对融合结果有积极的影响。
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引用次数: 0
Implementation of a SoC by Using lowRISC Architecture on an FPGA for Image Filtering Applications 基于低risc架构的图像滤波SoC的FPGA实现
Pub Date : 2022-05-15 DOI: 10.1109/SIU55565.2022.9864960
Latif Akçay, Bartu Sürer, B. Yalçin
In this study, it is aimed to implement the low-RISC system-on-chip, which is based on the Rocket processor created with the RISC-V instruction set architecture developed by Berkeley University, on FPGA and to run image processing algorithms on this system. While making this implementation, the main target is a system that is very simple, consumes low power, and can be quickly redirected to other purposes. Therefore, it is based on the effective evaluation of the existing system without using any extra customized accelerators. Thus, a free, open source, and powerful enough platform for many embedded system applications is proposed to the designers. For this purpose, a lane detection application designed with standard C libraries such as Gaussian blur filter, Sobel operation filter and other elements, which are widely used in image processing applications, is run with embedded Linux operating system and the results are shared.
本研究以美国伯克利大学开发的RISC-V指令集架构的Rocket处理器为基础,在FPGA上实现低risc的片上系统,并在该系统上运行图像处理算法。在进行此实现时,主要目标是一个非常简单,消耗低功耗并且可以快速重定向到其他目的的系统。因此,它是基于对现有系统的有效评估,而不使用任何额外的定制加速器。因此,为许多嵌入式系统应用程序提供了一个免费、开源和足够强大的平台。为此,利用图像处理应用中广泛使用的标准C库如高斯模糊滤波器、索贝尔运算滤波器等元素设计了一个车道检测应用程序,并在嵌入式Linux操作系统上运行,并共享结果。
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引用次数: 0
期刊
2022 30th Signal Processing and Communications Applications Conference (SIU)
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