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Constant envelope pseudo orthogonal excitations for ultrasound testing 超声检测的恒包络伪正交激励
2013 18th International Conference on Digital Signal Processing (DSP) Pub Date : 2013-07-01 DOI: 10.1109/ICDSP.2013.6622751
S. Caporale, S. Callegari, M. Ricci, P. Burrascano
{"title":"Constant envelope pseudo orthogonal excitations for ultrasound testing","authors":"S. Caporale, S. Callegari, M. Ricci, P. Burrascano","doi":"10.1109/ICDSP.2013.6622751","DOIUrl":"https://doi.org/10.1109/ICDSP.2013.6622751","url":null,"abstract":"Various techniques to generate pseudo-orthogonal excitations for Ultrasonic Non Destructive Testing (UT-NDT) are discussed, with the constraint that they deliver constant-envelope waveforms and they are FM based. Pseudo-orthogonal excitations enable multiple Tx probes to be operated simultaneously so that many measurements can be taken at once. The constraints assure minimal disruption of conventional hardware arrangements and guarantee a good exploitation of the power conversion abilities of the Tx probes. The goal is to seek a progressive management of the trade-off between contrasting merit factors.","PeriodicalId":180360,"journal":{"name":"2013 18th International Conference on Digital Signal Processing (DSP)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116784296","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
Immersive 3D media delivery for collaborating users over multiple networks 为多个网络上的协作用户提供沉浸式3D媒体交付
2013 18th International Conference on Digital Signal Processing (DSP) Pub Date : 2013-07-01 DOI: 10.1109/ICDSP.2013.6622761
D. V. S. X. D. Silva, E. Ekmekcioglu, S. Dogan, A. Kondoz, A. Akman, F. Pascual, I. Politis, Hugo Marques, Xiyu Shi
{"title":"Immersive 3D media delivery for collaborating users over multiple networks","authors":"D. V. S. X. D. Silva, E. Ekmekcioglu, S. Dogan, A. Kondoz, A. Akman, F. Pascual, I. Politis, Hugo Marques, Xiyu Shi","doi":"10.1109/ICDSP.2013.6622761","DOIUrl":"https://doi.org/10.1109/ICDSP.2013.6622761","url":null,"abstract":"It has been a challenging task to deliver high-volume 3D multi-view media with spatial audio to users. The challenge stems from the availability of a large number of user equipment with different capabilities, range of viewing preferences, as well as diverse network characteristics. With the target of facilitating 3D media delivery to multiple users simultaneously and in a synchronised way with consistent and high quality, the ROMEO project [1] focuses on developing new methods for compressing 3D multi-view video and spatial audio, as well as optimising the networking and compression jointly by incorporating content aware adaptation across the Internet. The approach combines the Digital Video Broadcast (DVB) technology together with a Quality of Experience (QoE) aware Peer-to-Peer (P2P) distribution system. This paper introduces the overall system architecture of the project, outlines its several building blocks, and provides some preliminary results.","PeriodicalId":180360,"journal":{"name":"2013 18th International Conference on Digital Signal Processing (DSP)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133556258","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
MRF-based high dynamic range image generation 基于磁共振成像的高动态范围图像生成
2013 18th International Conference on Digital Signal Processing (DSP) Pub Date : 2013-07-01 DOI: 10.1109/ICDSP.2013.6622753
Jae-Il Jung, Yo-Sung Ho
{"title":"MRF-based high dynamic range image generation","authors":"Jae-Il Jung, Yo-Sung Ho","doi":"10.1109/ICDSP.2013.6622753","DOIUrl":"https://doi.org/10.1109/ICDSP.2013.6622753","url":null,"abstract":"Image enhancement using high-dynamic range (HDR) images is widely exploited; however, it is limited by detail loss and excessive color generation. In addition, capturing HDR images by commercial digital cameras is problematic. In this paper, we propose an image enhancement technique of fusing two images with different exposures. In order to reduce unnatural color changes in the fused image, initially we modify the lightness of the less-exposed image according to that of the highly exposed image. Then, we design a Markov random field model (MRF) by considering a gradient, chrominance, and smoothness constraint. Further, the MRF model is optimized via belief propagation. Experimental results show that the proposed algorithm generates more natural results than other state-of-the-art algorithms.","PeriodicalId":180360,"journal":{"name":"2013 18th International Conference on Digital Signal Processing (DSP)","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132186781","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
A comparison of coded waveforms for air-coupled ultrasonic inspection 空气耦合超声检测编码波形的比较
2013 18th International Conference on Digital Signal Processing (DSP) Pub Date : 2013-07-01 DOI: 10.1109/ICDSP.2013.6622786
M. Ricci, S. Laureti, D. Hutchins, L. Davis
{"title":"A comparison of coded waveforms for air-coupled ultrasonic inspection","authors":"M. Ricci, S. Laureti, D. Hutchins, L. Davis","doi":"10.1109/ICDSP.2013.6622786","DOIUrl":"https://doi.org/10.1109/ICDSP.2013.6622786","url":null,"abstract":"This paper investigates various types of coded waveforms that could be used for air-coupled ultrasound. These are needed because of the low signal-to-noise ratios that are found in many air-coupled ultrasonic NDT measurements. The various algorithms are described, and their performance in the presence of noise demonstrated.","PeriodicalId":180360,"journal":{"name":"2013 18th International Conference on Digital Signal Processing (DSP)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114323427","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
Surveillance ontology for legal, ethical and privacy protection based on SKOS 基于SKOS的法律、伦理和隐私保护监控本体
2013 18th International Conference on Digital Signal Processing (DSP) Pub Date : 2013-07-01 DOI: 10.1109/ICDSP.2013.6622811
Virginia Fernandez Arguedas, E. Izquierdo, K. Chandramouli
{"title":"Surveillance ontology for legal, ethical and privacy protection based on SKOS","authors":"Virginia Fernandez Arguedas, E. Izquierdo, K. Chandramouli","doi":"10.1109/ICDSP.2013.6622811","DOIUrl":"https://doi.org/10.1109/ICDSP.2013.6622811","url":null,"abstract":"In a world filled with heightened vandalism and terrorist activities, video surveillance forms an integral part of any incident investigation. While aiming to provide safety and security for the citizens, CCTV cameras are exponentially deployed around metropolitan cities. However, the information thus collected and further processed should comply with the legal and ethical rules defined by the law. The primary ethical issue invoked by surveillance activities in general is that of privacy. In order to ensure that a surveillance system framework complies with the legal, ethical and privacy requirements of the law, in this paper we present a Surveillance Ontology extending the SKOS foundational ontology. The objective of this ontology is to translate the high-level linguistic rules into the information that can be processed and used to assess the compliance of the video analysis module with the rules defined.","PeriodicalId":180360,"journal":{"name":"2013 18th International Conference on Digital Signal Processing (DSP)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124924449","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
All bits cross correlation attack on the Montgomery Ladder implementation of RSA 全位互相关攻击的蒙哥马利阶梯RSA实现
2013 18th International Conference on Digital Signal Processing (DSP) Pub Date : 2013-07-01 DOI: 10.1109/ICDSP.2013.6622717
E. Kuzu, A. Tangel
{"title":"All bits cross correlation attack on the Montgomery Ladder implementation of RSA","authors":"E. Kuzu, A. Tangel","doi":"10.1109/ICDSP.2013.6622717","DOIUrl":"https://doi.org/10.1109/ICDSP.2013.6622717","url":null,"abstract":"In this study, an improved, time sample cross correlation based power attack is applied on a Montgomery Ladder implementation of the RSA. In the attack, by using an implementation level property, power traces related to the all key bits are cross correlated with each other and resulting correlation values are summed and compared to a threshold to estimate the secret key of the target RSA implementation. The attack could retrieve all the key bits by using 75% lesser power traces when compared to the single fixed reference bit and 50% lesser power traces compared to the double fixed reference bits approaches which are applied on the same implementation earlier.","PeriodicalId":180360,"journal":{"name":"2013 18th International Conference on Digital Signal Processing (DSP)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123146259","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
Collabrative sparse image fusion with application to pan-sharpening 协同稀疏图像融合及其在泛锐化中的应用
2013 18th International Conference on Digital Signal Processing (DSP) Pub Date : 2013-07-01 DOI: 10.1109/ICDSP.2013.6622830
Xiaoxiang Zhu, Claas Grohnfeldt, R. Bamler
{"title":"Collabrative sparse image fusion with application to pan-sharpening","authors":"Xiaoxiang Zhu, Claas Grohnfeldt, R. Bamler","doi":"10.1109/ICDSP.2013.6622830","DOIUrl":"https://doi.org/10.1109/ICDSP.2013.6622830","url":null,"abstract":"Recently sparse signal representation of image patches was explored to solve the pan-sharpening problem for remote sensing images. Although the proposed sparse reconstruction based methods lead to motivating results, yet none of them has considered the fact that the information contained in different multispectral channels may be mutually correlated. In this paper, we extend the Sparse Fusion of Images (SparseFI, pronounced “sparsify”) algorithm, proposed by the authors before, to a Jointly Sparse Fusion of Images (J-SparseFI) algorithm by exploiting these possible signal structural correlations between different multispectral channels. This is done by making use of the distributed compressive sensing (DCS) theory that restricts the solution of an underdetermined system by considering an ensemble of signals being jointly sparse. The algorithm is validated with UltraCam data. In the final presentation, results with Hyspex data will be presented.","PeriodicalId":180360,"journal":{"name":"2013 18th International Conference on Digital Signal Processing (DSP)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125325297","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
Evaluation of WCDMA receiver baseband processing on a Multi-Processor System-On-Chip 多处理器片上系统对WCDMA接收机基带处理的评价
2013 18th International Conference on Digital Signal Processing (DSP) Pub Date : 2013-07-01 DOI: 10.1109/ICDSP.2013.6622825
Rizwan Fazal, Waqar Hussain, T. Ahonen, J. Nurmi
{"title":"Evaluation of WCDMA receiver baseband processing on a Multi-Processor System-On-Chip","authors":"Rizwan Fazal, Waqar Hussain, T. Ahonen, J. Nurmi","doi":"10.1109/ICDSP.2013.6622825","DOIUrl":"https://doi.org/10.1109/ICDSP.2013.6622825","url":null,"abstract":"In this paper, we have described the mapping of four important kernels that are multi-path estimation, demodulation, channel estimation and symbol demapping on a Multi-Processor System-on-Chip (MPSoC) platform. These kernels are important steps to be performed by the receiver working on Wide band Code-Division Multiple Access (WCDMA) standard. At first, we mapped all of these kernels on a single Reduced Instruction Set Computing (RISC) processor and later on an MPSoC to compare the performance between the two implementations. Based on our implementation, we measured the speed-up achieved for using MPSoC platforms. If we analyze the performance difference in total, a speed-up of 6.3X is achieved between the single processing core and the multicore platform with nine cores.","PeriodicalId":180360,"journal":{"name":"2013 18th International Conference on Digital Signal Processing (DSP)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129674534","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
High precision ultrasonic positioning using a robust optimization approach 采用鲁棒优化方法的高精度超声定位
2013 18th International Conference on Digital Signal Processing (DSP) Pub Date : 2013-07-01 DOI: 10.1109/ICDSP.2013.6622736
M. O. Khyam, M. Alam, A. Lambert, C. Benson, M. Pickering
{"title":"High precision ultrasonic positioning using a robust optimization approach","authors":"M. O. Khyam, M. Alam, A. Lambert, C. Benson, M. Pickering","doi":"10.1109/ICDSP.2013.6622736","DOIUrl":"https://doi.org/10.1109/ICDSP.2013.6622736","url":null,"abstract":"Typically, indoor positioning systems require higher precision than outdoor positioning systems. Outdoor positioning technologies such as GPS provide poor accuracy in indoor environments due to signal attenuation by the building fabric. In indoor environments, commercial motion-capture systems are proficient at measuring the 3D position of an object precisely. The main disadvantages of this method include its cost and complexity. In this paper, we present a precise 3D ultrasonic positioning system for medical applications, using a robust steepest descent optimization algorithm, to estimate the 3D position of an ultrasonic transmitter. Our experimental results show that the proposed system has the precision required for medical applications and has lower cost and complexity when compared with the alternative traditional optical systems.","PeriodicalId":180360,"journal":{"name":"2013 18th International Conference on Digital Signal Processing (DSP)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128055079","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
Sparse microphone array design for wideband beamforming 宽带波束形成的稀疏传声器阵列设计
2013 18th International Conference on Digital Signal Processing (DSP) Pub Date : 2013-07-01 DOI: 10.1109/ICDSP.2013.6622711
M. Hawes, W. Liu
{"title":"Sparse microphone array design for wideband beamforming","authors":"M. Hawes, W. Liu","doi":"10.1109/ICDSP.2013.6622711","DOIUrl":"https://doi.org/10.1109/ICDSP.2013.6622711","url":null,"abstract":"The sparse wideband sensor/microphone array design problem is highly nonlinear and it is traditionally solved by genetic algorithms, simulated annealing or other similar optimization methods. This is an extremely time-consuming process and an optimum solution is not guaranteed. In this work, this problem is studied from the viewpoint of compressive sensing (CS) and a CS-based method is provided. Although there have been CS-based methods proposed for the design of narrowband arrays, its extension to the wideband case is not straightforward, as there are multiple coefficients associated with each sensor/microphone and it is not sufficient to simply minimize the l1 norm of the weight coefficients to obtain a sparse array solution. To achieve this, a modified l1 norm minimization method is derived and its effectiveness is verified by design examples.","PeriodicalId":180360,"journal":{"name":"2013 18th International Conference on Digital Signal Processing (DSP)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128271392","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: 15
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