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2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)最新文献

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Accelerated cover selection steganography 加速封面选择隐写
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-01 DOI: 10.1109/RADIOELEK.2017.7937591
V. Hajduk, D. Levický
{"title":"Accelerated cover selection steganography","authors":"V. Hajduk, D. Levický","doi":"10.1109/RADIOELEK.2017.7937591","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7937591","url":null,"abstract":"Information hiding represents a constantly growing field mainly consisting of digital watermarking and steganography. Both deal with inserting additional information into multimedia. Basically, watermarking protects the multimedia content against unauthorized manipulation whereas steganography utilizes multimedia in the role of a cover object for unauthorized secret message transmission. This article deals with additional technique to steganography which can decrease an impact to cover image after an embedding process. The goal is to find an optimal image from a cover image database based on bits of the secret message. With 2,000 image database, cover selection method can decrease impact by 10% in comparison to the same embedding method without cover selection. Disadvantage lays in a time consumption. In this article, there is proposed a novel accelerated cover selection method. Acceleration is achieved by optimal shortening of a secret message for comparative process.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130643923","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
Hidden attractor and regions of attraction 隐藏吸引子和吸引区域
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-01 DOI: 10.1109/RADIOELEK.2017.7936651
Michal Hlavačka, M. Guzan
{"title":"Hidden attractor and regions of attraction","authors":"Michal Hlavačka, M. Guzan","doi":"10.1109/RADIOELEK.2017.7936651","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7936651","url":null,"abstract":"This article introduced regions of attraction for new phenomenon in the field of chaotic systems: hidden attractor. Furthermore gives an answer to the question about the size of regions of attraction for stable equilibrium, hidden attractor and solutions of differential equations leading to infinity.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130450914","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
On use of crowdsourcing for H.264/AVC and H.265/HEVC video quality evaluation 基于众包的H.264/AVC和H.265/HEVC视频质量评价
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-01 DOI: 10.1109/RADIOELEK.2017.7937581
Ondrej Zach, Michael Seufert, Matthias Hirth, M. Slanina, P. Tran-Gia
{"title":"On use of crowdsourcing for H.264/AVC and H.265/HEVC video quality evaluation","authors":"Ondrej Zach, Michael Seufert, Matthias Hirth, M. Slanina, P. Tran-Gia","doi":"10.1109/RADIOELEK.2017.7937581","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7937581","url":null,"abstract":"Crowdsourcing has become a popular method in the field of video quality evaluation. Gathering the opinion of the users using crowdsourcing is quick and relatively cheap but such a study has to be designed very carefully in order to give relevant results. So far, the majority of the QoE studies using crowdsourcing has been focusing on the performance of H.264/AVC algorithm in different situations (such as encoder settings, stalling effects, etc). Modern video coding methods, however, are only rarely tested using the crowdsourcing approach. We designed a study comparing the performance of both H.264/AVC and H.265/HEVC standards in the crowdsourcing environment. We deal with the possibilities of delivering and presenting the HEVC encoded content to the participants of the crowdsourcing study and potential challenges. Finally, the study was performed using Microworkers platform and gathered results are then compared with three different objective video quality metrics.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"255 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134036799","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: 5
Comparison of feature performance in gunshot detection depending on noise degradation 基于噪声退化的枪弹检测特征性能比较
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-01 DOI: 10.1109/RADIOELEK.2017.7937601
M. Hrabina, M. Sigmund
{"title":"Comparison of feature performance in gunshot detection depending on noise degradation","authors":"M. Hrabina, M. Sigmund","doi":"10.1109/RADIOELEK.2017.7937601","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7937601","url":null,"abstract":"This paper compares three different features and various feature orders for the purpose of determining the best feature for gunshot detection under adverse noise condition. Compared features cover LPC, LPCC and MFCC with orders from 8 to 30. All features were extracted from sounds with the sound-to-noise ratios 30, 20, 10, and 0 dB. The background noise was simulated by white noise. Experimental results indicate that LPC coefficients are the most efficient features, especially for low noise. On the other hand, MFCC performed well in noisy environments at 10 dB and 20 dB.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131095661","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: 6
Self-synchronized encoding and decoding algorithms based on code signal feature 基于码信号特征的自同步编解码算法
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-01 DOI: 10.1109/RADIOELEK.2017.7936641
M. S. Svetlov, O. Dolinina, A. L’vov, D. V. Klenov
{"title":"Self-synchronized encoding and decoding algorithms based on code signal feature","authors":"M. S. Svetlov, O. Dolinina, A. L’vov, D. V. Klenov","doi":"10.1109/RADIOELEK.2017.7936641","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7936641","url":null,"abstract":"Synchronization of all constituent units must be provided in all digital data transmission systems with a serial synchronous interface, primarily of encoding and decoding devices. This work investigates the method and algorithms of information reception and transmission based on using of code signal feature that do not require the application of error-correcting codes and special measures for synchronization ensuring. Special feature of the developed algorithms is the representation of each discharge symbol of the primary error-correcting code in the form of binary sequences, transmitted over a communication channel in the form of pulses series conditionally infinitely small duration rigidly interconnected by fixed time intervals that are multiple to certain time delay. The paper shows that the suggested method of transmission has the properties of self-synchronization, and significantly increases the information reliability of the system.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132331235","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
Detecting edges with sub-pixel precision in JPEG images 在JPEG图像中以亚像素精度检测边缘
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-01 DOI: 10.1109/RADIOELEK.2017.7937583
M. Hagara, O. Ondrácek, P. Kubinec, R. Stojanovic
{"title":"Detecting edges with sub-pixel precision in JPEG images","authors":"M. Hagara, O. Ondrácek, P. Kubinec, R. Stojanovic","doi":"10.1109/RADIOELEK.2017.7937583","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7937583","url":null,"abstract":"Edge localization is one of the mostly used procedures in image processing. In some applications it is desirable to improve edge detector precision to sub-pixel values. The input data for precise edge detector are usually in the form of uncompressed image. Sometimes, only JPEG images are available for processing. In our paper we deal with this situation, we focus on the question how lossy JPEG compression of image can change the precision of edge detection. We used JPEG images with different quality to test three methods for edge localization with accuracy at the sub-pixel level for 1-D images. First two algorithms are based on spatial and gray level moments of the image function. Third method used in our experiments approximates samples of real image with erf function. To compare these three methods we used noiseless and noisy JPEG images, two types of noise were used: Gaussian noise and ‘salt & pepper’. The standard deviation of edge position error was chosen as the precision criterion.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127476242","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
Detecting unknown signals in radio monitoring systems 探测无线电监测系统中的未知信号
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-01 DOI: 10.1109/RADIOELEK.2017.7937604
V. Bezruk, Oleksii Fedorov, Z. Nemec
{"title":"Detecting unknown signals in radio monitoring systems","authors":"V. Bezruk, Oleksii Fedorov, Z. Nemec","doi":"10.1109/RADIOELEK.2017.7937604","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7937604","url":null,"abstract":"This work proposes a number of decision rules for detecting unknown signals as well as the methodology of choosing preferable variants of decision rules subject to the totality of indices which characterize both detection quality and computational complexity. The suggested methods may be applied for radio monitoring purposes.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132297471","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
Analysis of nonlinear cell of transmission line model using Volterra series approach 用Volterra级数法分析传输线模型的非线性单元
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-01 DOI: 10.1109/RADIOELEK.2017.7937574
F. Záplata, L. Brancík
{"title":"Analysis of nonlinear cell of transmission line model using Volterra series approach","authors":"F. Záplata, L. Brancík","doi":"10.1109/RADIOELEK.2017.7937574","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7937574","url":null,"abstract":"The paper deals with an unconventional approach to the analysis of nonlinear RLC cell serving as a basic building block of nonlinear transmission line (NLTL) models. The only nonlinear element is considered, capacitor C represented by a semiconductor varactor with an analytically defined capacitance-voltage relation. A method based on the use of Volterra series expansion of voltage responses is investigated, while efficient way of getting respective kernels utilizing Taylor series expansion is shown. Computer simulation results in Matlab are presented and compared with ODEs built-in solver.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132960046","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
Extending of the Kinect device functionality and the corresponding database 扩展Kinect设备的功能和相应的数据库
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-01 DOI: 10.1109/RADIOELEK.2017.7937594
L. Bolecek, P. Němec, Jan Kufa, V. Rícný
{"title":"Extending of the Kinect device functionality and the corresponding database","authors":"L. Bolecek, P. Němec, Jan Kufa, V. Rícný","doi":"10.1109/RADIOELEK.2017.7937594","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7937594","url":null,"abstract":"This paper deals with a creation of the RGB-D database by using Microsoft Kinect device. One of the main uses of Kinect is measurement and subsequent creation the so-called depth maps of the 3D scenes. The maps obtained by Kinect can be improved. Existence of databases suitable for the experiment is very important for research. One of the possible research directions is use of infrared version of the investigated scene for improvement of the depth map. However, the databases of the Kinect data which would contain the corresponding infrared images do not exist. Therefore, our aim was to create such database. We want to increase the usability of the database by adding stereo images. Moreover, the same scenes were captured by Kinect v2. It was also investigated the impact of simultaneous use Kinect v1 and Kinect v2 to improve depth map investigated the scene. The database contains sequences of objects on turntable and simple scenes containing several objects.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127986522","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
Performance of time switching based energy harvesting for amplify-and-forward half-duplex relaying with hardware impairment 有硬件损伤的放大前向半双工继电器基于时间开关的能量收集性能
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-01 DOI: 10.1109/RADIOELEK.2017.7936646
T. N. Nguyen, Phuong T. Tran, M. Voznák, L. Behan
{"title":"Performance of time switching based energy harvesting for amplify-and-forward half-duplex relaying with hardware impairment","authors":"T. N. Nguyen, Phuong T. Tran, M. Voznák, L. Behan","doi":"10.1109/RADIOELEK.2017.7936646","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7936646","url":null,"abstract":"In this paper, we derive the formulas for outage probability and system throughput of an amplify-and-forward half-duplex relay network, in which the relay node is equipped with time switching based energy harvesting capability. It can be learnt from the analysis that the throughput performance of the system of interest is maximized only at an appropriate choice of the time-switching factor. This optimal value can be found by numerical algorithm. The analysis also clarifies the effect of other parameters such as transmitted-power-to-noise ratio and the data rate, to the system performance. All these above results are confirmed by Monte-Carlo simulation.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133652055","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
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