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2014 22nd Signal Processing and Communications Applications Conference (SIU)最新文献

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Image denoising by using non-local means and Total Variation 基于非局部均值和全变分的图像去噪方法
2014 22nd Signal Processing and Communications Applications Conference (SIU) Pub Date : 2014-04-23 DOI: 10.1109/SIU.2014.6830681
M. Ertas, A. Akan, I. Yildirim, M. Kamasak
{"title":"Image denoising by using non-local means and Total Variation","authors":"M. Ertas, A. Akan, I. Yildirim, M. Kamasak","doi":"10.1109/SIU.2014.6830681","DOIUrl":"https://doi.org/10.1109/SIU.2014.6830681","url":null,"abstract":"Recently, medical modalities such as low dose CT, MRI and tomosynthesis have focused on generating noise-free images by using fewer measurements. However acquiring or using less data to reconstruct an image increases the noise level in the image. Thus, image denoising has been one of the most active research areas due to the noise existence in most medical imaging modalities. Due to its virtue of edge preserving, Total Variation (TV) has been actively used in medical imaging. Non-Local Means has recently been proposed as a filtering to suppress the Gaussian noise and preserve fine details in the image. In this study, the total variation (TV) minimization, is combined with Non-Local Means (NLM) filtering to increase the noise reduction. Visual and numerical results show that an important improvement in image denoising has been achieved in the sense of Structure Similarity (SSIM) and RMSE. The optimum NLM filtering parameters selection has also been studied to increase the performance the proposed method.","PeriodicalId":384835,"journal":{"name":"2014 22nd Signal Processing and Communications Applications Conference (SIU)","volume":"618 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116332758","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: 4
One-bit transform based hand vein biometric system 基于一比特变换的手部静脉生物识别系统
2014 22nd Signal Processing and Communications Applications Conference (SIU) Pub Date : 2014-04-23 DOI: 10.1109/SIU.2014.6830424
Kubra Cezairlioglu, Mehtap Cakmak, S. Ertürk
{"title":"One-bit transform based hand vein biometric system","authors":"Kubra Cezairlioglu, Mehtap Cakmak, S. Ertürk","doi":"10.1109/SIU.2014.6830424","DOIUrl":"https://doi.org/10.1109/SIU.2014.6830424","url":null,"abstract":"In this paper, a novel scheme for personal authentication using palm vein information based on one-bit transform is presented. In this work, infrared palm images which contain the palm vein information are used and after contrast enhancement based preprocessing the corresponding region of interest is extracted. The one-bit transform is used to obtain the binary image containing vein information in a novel approach. To obtain the vein data perceptibly, morphological processing is used in the final processing step. In the recognition step binary correlation based identification is accomplished.","PeriodicalId":384835,"journal":{"name":"2014 22nd Signal Processing and Communications Applications Conference (SIU)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116485224","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
Dual mode antenna design using split ring resonator array 分环谐振器阵列双模天线设计
2014 22nd Signal Processing and Communications Applications Conference (SIU) Pub Date : 2014-04-23 DOI: 10.1109/SIU.2014.6830173
Gökay Dişken, E. Ekmekci
{"title":"Dual mode antenna design using split ring resonator array","authors":"Gökay Dişken, E. Ekmekci","doi":"10.1109/SIU.2014.6830173","DOIUrl":"https://doi.org/10.1109/SIU.2014.6830173","url":null,"abstract":"In this study an array structure formed by four split ring resonators (SRR) has been used as the radiating part of the antenna. Due to the coupling between resonators placed in proper distances along the propagation direction, two mode of radiation has been shown by numerical calculations. Changing the distance between SRR couples shifts the resonance frequencies and affects return loss values associated with resonance frequencies. Calculated surface current distributions shows that each radiation mode has been caused by different SRR structures on the array structure.","PeriodicalId":384835,"journal":{"name":"2014 22nd Signal Processing and Communications Applications Conference (SIU)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116510620","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: 1
Real-time data reconciliation solutions for big data problems observed in oil refineries 针对炼油厂大数据问题的实时数据协调解决方案
2014 22nd Signal Processing and Communications Applications Conference (SIU) Pub Date : 2014-04-23 DOI: 10.1109/SIU.2014.6830553
Mustafa Bahr, Burak Aydoğan, Mehmet Aydin, A. Khodabakhsh, I. An, A. Ercan
{"title":"Real-time data reconciliation solutions for big data problems observed in oil refineries","authors":"Mustafa Bahr, Burak Aydoğan, Mehmet Aydin, A. Khodabakhsh, I. An, A. Ercan","doi":"10.1109/SIU.2014.6830553","DOIUrl":"https://doi.org/10.1109/SIU.2014.6830553","url":null,"abstract":"Refineries are giant industrial facilities where tons of crude oil is turned into fuel oil and other chemical by-products through different chemical processes every day. In this article, we discuss big data problems specifically obserbed in sensor-heavy oil refineries (volume, velocity, variety, veracity) and suggest real-time data validation and reconciliation (DVR) solutions fit for these environments.","PeriodicalId":384835,"journal":{"name":"2014 22nd Signal Processing and Communications Applications Conference (SIU)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121443444","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: 2
Outage and bit error performance analyses for two-way broadcast relay channels 双向广播中继信道的中断和误码性能分析
2014 22nd Signal Processing and Communications Applications Conference (SIU) Pub Date : 2014-04-23 DOI: 10.1109/SIU.2014.6830239
Umur Karabulut, Ümit Aygölü
{"title":"Outage and bit error performance analyses for two-way broadcast relay channels","authors":"Umur Karabulut, Ümit Aygölü","doi":"10.1109/SIU.2014.6830239","DOIUrl":"https://doi.org/10.1109/SIU.2014.6830239","url":null,"abstract":"In this paper, physical-layer network coding (PLNC) which is widely considered recently in the wireless communications research area is applied to bidirectional broadcast relay channels. During this work, mutual information transfer between two groups of users which can not directly communicate with each other is provided by a relay and the PLNC technique. Each user in each group transmits its own information to all other users. Analytical outage and bit error probability expressions for the considered system are derived and obtained results are supported by computer simulations. The effect of the user number on the system performance is also evaluated.","PeriodicalId":384835,"journal":{"name":"2014 22nd Signal Processing and Communications Applications Conference (SIU)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121641790","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
Tubularity tracking based automatic road detection from sattelite images 基于管状跟踪的卫星图像道路自动检测
2014 22nd Signal Processing and Communications Applications Conference (SIU) Pub Date : 2014-04-23 DOI: 10.1109/SIU.2014.6830698
Y. Z. Gurbuz, Aydin Alatan
{"title":"Tubularity tracking based automatic road detection from sattelite images","authors":"Y. Z. Gurbuz, Aydin Alatan","doi":"10.1109/SIU.2014.6830698","DOIUrl":"https://doi.org/10.1109/SIU.2014.6830698","url":null,"abstract":"In this paper, a novel approach based on tubularity tracking and graph cuts for road detection from satellites images is presented. The most important feature of the proposed method is its local peak detection filter. Unlike the tubularity based road or road like curvilinear structure detection methods presented in the literature, proposed method samples local peaks from tubularity image by tracking the peak points based on Bayesian filtering in order to construct graphs and introduces no significant computational complexity.","PeriodicalId":384835,"journal":{"name":"2014 22nd Signal Processing and Communications Applications Conference (SIU)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121652839","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
Energy efficient handover between heterogeneous networks using IEEE 802.21 使用IEEE 802.21的异构网络之间的节能切换
2014 22nd Signal Processing and Communications Applications Conference (SIU) Pub Date : 2014-04-23 DOI: 10.1109/SIU.2014.6830319
Gurkan Coskun, Ibrahim Hökelek, H. A. Çırpan
{"title":"Energy efficient handover between heterogeneous networks using IEEE 802.21","authors":"Gurkan Coskun, Ibrahim Hökelek, H. A. Çırpan","doi":"10.1109/SIU.2014.6830319","DOIUrl":"https://doi.org/10.1109/SIU.2014.6830319","url":null,"abstract":"Along with the spread of mobile devices supporting multiple radio interfaces, users can connect to the mobile operator's network using different access technologies such as UMTS, WLAN and LTE. While heterogeneous network access technologies allow operators to offer next generation services to their customers at an affordable price, providing dynamic and seamless handover between these networks to minimize service interruption is a research problem. IEEE 802.21, which defines a set of standards for media independent handover, is capable of realizing both horizontal and vertical handovers. In this paper, a new algorithm is proposed to provide energy efficient handovers between UMTS and WLAN networks. The proposed algorithm is implemented within the IEEE 802.21 framework and its performance analysis is performed using the NS2.29 simulation tool. Simulation results show that the proposed algorithm significantly increases the service duration and hence decreases packet losses by taking the energy efficiency into account during its handover decisions.","PeriodicalId":384835,"journal":{"name":"2014 22nd Signal Processing and Communications Applications Conference (SIU)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114760806","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
3D electron density estimation in the ionosphere 电离层三维电子密度估计
2014 22nd Signal Processing and Communications Applications Conference (SIU) Pub Date : 2014-04-23 DOI: 10.1109/SIU.2014.6830282
Hakan Tuna, O. Arikan, F. Arıkan
{"title":"3D electron density estimation in the ionosphere","authors":"Hakan Tuna, O. Arikan, F. Arıkan","doi":"10.1109/SIU.2014.6830282","DOIUrl":"https://doi.org/10.1109/SIU.2014.6830282","url":null,"abstract":"Ionosphere has ion distribution which is variable in space and time. There have been physical and empirical studies for modeling the ionosphere. International Reference Ionosphere extended to Plasmasphere (IRI-Plas) is the most recent model developed for this purpose. However, IRI-Plas presents a model about the ionosphere and its compliance with the instantaneous state of the ionosphere does not provide the accuracy needed for engineering purposes. One of the important information sources about the instantaneous state of the ionosphere is GPS signals. In this study, constructing the ionosphere which is compatible with both the instantaneous ionosphere measurements and the physical structure of the ionosphere is presented as an optimization problem, and solved by using the particle swarm optimization technique. The ionosphere over Turkey is investigated by using the proposed optimization method and the importance of the instantaneous ionosphere measurements obtained from GPS signals is demonstrated.","PeriodicalId":384835,"journal":{"name":"2014 22nd Signal Processing and Communications Applications Conference (SIU)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124464189","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: 2
Improved online dictionary learning for sparse signal representation 改进了稀疏信号表示的在线字典学习
2014 22nd Signal Processing and Communications Applications Conference (SIU) Pub Date : 2014-04-23 DOI: 10.1109/SIU.2014.6830576
F. Yeganli, Hüseyin Özkaramanli
{"title":"Improved online dictionary learning for sparse signal representation","authors":"F. Yeganli, Hüseyin Özkaramanli","doi":"10.1109/SIU.2014.6830576","DOIUrl":"https://doi.org/10.1109/SIU.2014.6830576","url":null,"abstract":"In this paper a new dictionary learning algorithm is proposed. Similar to many dictionary learning algorithms, the proposed algorithm alternates between two stages. First, sparse coding stage uses the current dictionary to obtain the sparse representation coefficients. Herein, the orthogonal matching pursuit algorithm is used for sparse coding. Second, a dictionary update stage that employs the calculated coefficients to update the dictionary and is based on iterative least squares method. The autocorrelation and the cross correlation between the sparse coding coefficients and the training data are estimated recursively by applying a forgetting factor. The variable step size which depends on the forgetting factor and autocorrelation function is derived. The simulation results indicate that representation ability of dictionaries designed by the proposed method has improved SNR compared to those designed with existing state of the art algorithms with faster convergence. Preliminary results for single image super-resolution are promising.","PeriodicalId":384835,"journal":{"name":"2014 22nd Signal Processing and Communications Applications Conference (SIU)","volume":"06 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124465038","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: 3
Scattered data estimation on medical images for cranioplasty applications 头颅成形术中医学图像的分散数据估计
2014 22nd Signal Processing and Communications Applications Conference (SIU) Pub Date : 2014-04-23 DOI: 10.1109/SIU.2014.6830571
Ferhat Atasoy, Fatih Nar, B. Şen, Mahmut Ferat
{"title":"Scattered data estimation on medical images for cranioplasty applications","authors":"Ferhat Atasoy, Fatih Nar, B. Şen, Mahmut Ferat","doi":"10.1109/SIU.2014.6830571","DOIUrl":"https://doi.org/10.1109/SIU.2014.6830571","url":null,"abstract":"Cranioplasty is a surgical operation to repair hole or defects on skull. 3 dimensional computed tomography (CT) images are used for automatic determination of the shape of implant which is used for repairing defect. The designing implant by mathematical model and manufacturing it before operation lowers the operation cost. In this paper, previous studies are examined, applications are realized by radial basis functions (RBF) and insufficient sections of previous studies are revealed.","PeriodicalId":384835,"journal":{"name":"2014 22nd Signal Processing and Communications Applications Conference (SIU)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124023323","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: 1
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