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2014 IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP)最新文献

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Effect of seawater on radiation field of electric dipole 海水对电偶极子辐射场的影响
2014 IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP) Pub Date : 2014-07-09 DOI: 10.1109/ChinaSIP.2014.6889355
Lichen Zhang, Yingmin Wang, Aiping Huang
{"title":"Effect of seawater on radiation field of electric dipole","authors":"Lichen Zhang, Yingmin Wang, Aiping Huang","doi":"10.1109/ChinaSIP.2014.6889355","DOIUrl":"https://doi.org/10.1109/ChinaSIP.2014.6889355","url":null,"abstract":"The corrosion and corrosion resistance current of the submarine will produce extremely low frequency electric field after modulated by the propeller rotation in the seawater. It becomes one of the most important characteristics of the signal source. We derive the expression for the electric and magnetic fields of the electric dipole in the seawater using the electric Hertz vector, also give the expressions for the standard field. Measurements and numerical simulations show that the standard field amplitude of the submarine in the shaft frequency is in a great location. And the shaft - rate electric field can be received in a long distance. Therefore, submarine detection using the shaft - rate electric field can be probably best carried out.","PeriodicalId":248977,"journal":{"name":"2014 IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127459763","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
Hybrid wavelet - DCT intra prediction for H.264/AVC interactive encoder H.264/AVC交互式编码器的混合小波- DCT帧内预测
2014 IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP) Pub Date : 2014-07-09 DOI: 10.1109/ChinaSIP.2014.6889248
Tarek A. Elarabi, Ahmed Sammoud, A. Abdelgawad, X. Li, M. Bayoumi
{"title":"Hybrid wavelet - DCT intra prediction for H.264/AVC interactive encoder","authors":"Tarek A. Elarabi, Ahmed Sammoud, A. Abdelgawad, X. Li, M. Bayoumi","doi":"10.1109/ChinaSIP.2014.6889248","DOIUrl":"https://doi.org/10.1109/ChinaSIP.2014.6889248","url":null,"abstract":"With the growing usage of mobile video applications and Internet based video services; techniques and algorithms of the current video compression standards face new challenging demands for lower bit-rate and faster processing speed. H.264/AVC video compression standard is widely used and provides state of the art video compression solution, but still needs to address the challenges of high bit-rate and required processing power. In this paper, a low bit-rate compression algorithm is proposed, which introduces a novel approach that use both DCT (Discrete Cosine Transform) and DWT (Discrete Wavelet Transform) for enhancing the Intra-Prediction phase of H.264/AVC standard. The proposed Hybrid Wavelet-DCT (HW-DCT) algorithm modifies the FSF (Full Search Free) algorithm; by adding wavelet-based transformation prior to the Intra-prediction process. The HW-DCT algorithm adds up the advantages of wavelet based compression technique to the speed of the FSF algorithm and creates an Intra-prediction algorithm that guarantees 51% lower bit-rate while maintaining similar visual quality and Peak Signal to Noise Ratio (PSNR) of the original H.264/AVC Intra-prediction algorithm. The JM 18.2 Reference software implementation results have validated the effectiveness of our proposed algorithm and shown a significant improvements in both run-time and bit-rate.","PeriodicalId":248977,"journal":{"name":"2014 IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP)","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133109954","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
Low probability of intercept optimization for radar network based on mutual information 基于互信息的低概率雷达网络拦截优化
2014 IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP) Pub Date : 2014-07-09 DOI: 10.1109/ChinaSIP.2014.6889331
C. Shi, Jianjiang Zhou, Fei Wang
{"title":"Low probability of intercept optimization for radar network based on mutual information","authors":"C. Shi, Jianjiang Zhou, Fei Wang","doi":"10.1109/ChinaSIP.2014.6889331","DOIUrl":"https://doi.org/10.1109/ChinaSIP.2014.6889331","url":null,"abstract":"This paper investigates the problem of low probability of intercept (LPI) design for radar network system and presents a novel LPI optimization strategy based on mutual information (MI) to improve the LPI performance for radar network. With the radar network system model, this paper would first derive Schleher intercept factor for radar network. Then, a novel LPI optimization strategy is proposed, where for a predefined threshold of MI to estimate the target parameters, Schleher intercept factor is minimized by optimizing transmission power allocation among netted radars in the network. Moreover, the nonlinear programming based genetic algorithm (NPGA) is employed to solve the resulting nonconvex and nonlinear optimization problem. Simulations demonstrate that our proposed scheme is valuable and effective to improve the LPI performance for radar network.","PeriodicalId":248977,"journal":{"name":"2014 IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP)","volume":"3 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133238189","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: 14
Near-field source localization in complex indoor environment using uniform circular array 基于均匀圆形阵列的复杂室内环境近场源定位
2014 IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP) Pub Date : 2014-07-09 DOI: 10.1109/ChinaSIP.2014.6889275
Xiansheng Guo, Baocang Li, L. Chu, Disong Wang
{"title":"Near-field source localization in complex indoor environment using uniform circular array","authors":"Xiansheng Guo, Baocang Li, L. Chu, Disong Wang","doi":"10.1109/ChinaSIP.2014.6889275","DOIUrl":"https://doi.org/10.1109/ChinaSIP.2014.6889275","url":null,"abstract":"In this paper, we propose a covariance matrix matching technique using a uniform circular array (UCA) to localize a near-field source in indoor multi-path environment. Firstly, we exploit off-line measured covariance matrices for suitable spaced reference points and storing these matrices as a fingerprint; Secondly, a matrix matching algorithm is designed to obtain the position of source. Compared with received signal strength (RSS) fingerprint, covariance matrix can offer more channel information of indoor environment, hence, our proposed algorithm outperforms RSS based algorithm in accuracy of localization. Finally, some simulation results show the efficacy of our proposed technique.","PeriodicalId":248977,"journal":{"name":"2014 IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129502297","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
Modified affinity propagation clustering 改进的亲和传播聚类
2014 IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP) Pub Date : 2014-07-09 DOI: 10.1109/ChinaSIP.2014.6889294
Jing Zhang, Mingyi He, Yuchao Dai
{"title":"Modified affinity propagation clustering","authors":"Jing Zhang, Mingyi He, Yuchao Dai","doi":"10.1109/ChinaSIP.2014.6889294","DOIUrl":"https://doi.org/10.1109/ChinaSIP.2014.6889294","url":null,"abstract":"Affinity propagation clustering is an efficient clustering technique that does not require prior knowledge of the number of clusters. However, it sets the input preferences without considering data set distribution and competition in the former iteration is ignored when updating messages passing between data points. This paper presents a modified affinity propagation algorithm. Firstly, preference for each data point to serve as an exemplar is computed self-adaptively based on data set distribution; then encouragement and chastisement mechanism is introduced for updating message of availability. Experimental results on standard data sets and synthetic data sets demonstrate feasibility and effectiveness of the proposed algorithm.","PeriodicalId":248977,"journal":{"name":"2014 IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131146573","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
Histogram-based retrieval for encrypted JPEG images 基于直方图的加密JPEG图像检索
2014 IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP) Pub Date : 2014-07-09 DOI: 10.1109/ChinaSIP.2014.6889282
Xinpeng Zhang, Hang Cheng
{"title":"Histogram-based retrieval for encrypted JPEG images","authors":"Xinpeng Zhang, Hang Cheng","doi":"10.1109/ChinaSIP.2014.6889282","DOIUrl":"https://doi.org/10.1109/ChinaSIP.2014.6889282","url":null,"abstract":"This work proposes a novel scheme for encrypted JPEG image retrieval, which includes image encryption and unsupervised/supervised retrieval phases. Using this scheme, the encrypted images are produced by permuting DCT coefficients, and transmitted to a database server. With an encrypted query image, although the server does not know the plaintext content, he may get the histogram at each frequency position. After calculating the distances between the histograms of encrypted query image and database image, the server can return the encrypted images with plaintext content similar to the query image according to integrated distances. If a training image set is available, the retrieval results can be also determined by conditional probabilities calculated from a supervised mechanism.","PeriodicalId":248977,"journal":{"name":"2014 IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131368484","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: 24
Orthogonal matching pursuit for nonlinear unmixing of hyperspectral imagery 高光谱图像非线性解混的正交匹配追踪
2014 IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP) Pub Date : 2014-07-09 DOI: 10.1109/ChinaSIP.2014.6889222
N. Raksuntorn, Q. Du, N. Younan, Wei Li
{"title":"Orthogonal matching pursuit for nonlinear unmixing of hyperspectral imagery","authors":"N. Raksuntorn, Q. Du, N. Younan, Wei Li","doi":"10.1109/ChinaSIP.2014.6889222","DOIUrl":"https://doi.org/10.1109/ChinaSIP.2014.6889222","url":null,"abstract":"A simple but effective nonlinear mixture model is adopted for nonlinear unmixing of hyperspectral imagery, where the multiplication of each pair of endmembers results in a virtual endmember, representing multiple scattering effect during pixel construction process. The analysis is followed by linear unmixing for abundance estimation. Due to a large number of nonlinear terms being added in an unknown environment, the following abundance estimation may contain some error if most of endmembers do not really participate in the mixture of a pixel. Thus, sparse unmixing is applied to search the actual endmember set per pixel. The orthogonal matching pursuit (OMP) is adopted for this purpose. It can offer comparable results to the previously developed endmember variable linear mixture model (EVLMM) with much lower computational cost.","PeriodicalId":248977,"journal":{"name":"2014 IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP)","volume":"4 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113941604","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
Novel designs for nonsubsampled multiresolution directional filter banks and an extra finer directional wavelet transform 新设计的非下采样多分辨率方向滤波器组和更精细的方向小波变换
2014 IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP) Pub Date : 2014-07-09 DOI: 10.1109/ChinaSIP.2014.6889260
Shrishail S. Gajbhar, M. Joshi
{"title":"Novel designs for nonsubsampled multiresolution directional filter banks and an extra finer directional wavelet transform","authors":"Shrishail S. Gajbhar, M. Joshi","doi":"10.1109/ChinaSIP.2014.6889260","DOIUrl":"https://doi.org/10.1109/ChinaSIP.2014.6889260","url":null,"abstract":"This paper presents two novel multirate tree-structure designs for a class of nonsubsampled, perfect reconstruction (PR) multiresolution directional filter banks (MDFBs). The proposed designs are simple and efficiently obtained from a combination of 2-D nonseparable filters and 2 by 2 upsampling matrices. The proposed MDFBs having one lowpass and six highpass directional subbands represent the oriented image features non-adaptively with complete shift-invariance. We also propose nonsubsampled design of an extra finer directional wavelet transform (EFiDWT), with one lowpass and twelve highpass directional subbands. The proposed designs can have efficient implementations with the notion of generalized separability. The efficacy of the proposed designs are tested for image denoising application that uses simple hard thresholding technique.","PeriodicalId":248977,"journal":{"name":"2014 IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125075217","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
High precision magnetic ranging for Steam-Assisted Gravity Drainage system 用于蒸汽辅助重力排水系统的高精度磁测距
2014 IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP) Pub Date : 2014-07-09 DOI: 10.1109/ChinaSIP.2014.6889336
Chao Zhang, Yaxin Zhang
{"title":"High precision magnetic ranging for Steam-Assisted Gravity Drainage system","authors":"Chao Zhang, Yaxin Zhang","doi":"10.1109/ChinaSIP.2014.6889336","DOIUrl":"https://doi.org/10.1109/ChinaSIP.2014.6889336","url":null,"abstract":"In the magnetic ranging for Steam-Assisted Gravity Drainage (SAGD) system, the Kalman filtering is proposed to increase the accuracy of the measured range and azimuth, which overcomes the problem that the magnetic field is easy to be interfered and attenuated by the tube in the well. The Kalman filtering can be applied within the process of drilling, and the accuracy is increased at least one order with an appropriate depth of Kalman filtering.","PeriodicalId":248977,"journal":{"name":"2014 IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP)","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128425081","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
A structure-based subspace fitting approach for interference rejection in moving uniform linear array 一种基于结构的子空间拟合方法用于运动均匀线阵干扰抑制
2014 IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP) Pub Date : 2014-07-09 DOI: 10.1109/ChinaSIP.2014.6889244
Shun He, Guomin Li
{"title":"A structure-based subspace fitting approach for interference rejection in moving uniform linear array","authors":"Shun He, Guomin Li","doi":"10.1109/ChinaSIP.2014.6889244","DOIUrl":"https://doi.org/10.1109/ChinaSIP.2014.6889244","url":null,"abstract":"Space-time adaptive processing (STAP) is a well-suited methodology to eliminate strong interference in moving-platform sensor arrays. A fundamental issue in STAP is to determine the optimal weight vector. This can be obtained either by sample matrix inverse (SMI) or by subspace projection. We perform a structure-based two-stage signal subspace reconstruction to obtain an accurate estimate of the interference subspace with small training-data support. The performance of the proposed approach is evaluated based on numerically simulation.","PeriodicalId":248977,"journal":{"name":"2014 IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126895333","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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