{"title":"Extended AMP algorithm for correlated distributed compressed sensing model","authors":"Yang Lu, Wei Dai","doi":"10.1109/ICDSP.2016.7868649","DOIUrl":"https://doi.org/10.1109/ICDSP.2016.7868649","url":null,"abstract":"We study the correlated distributed compressed sensing (C-DCS) scenarios where the measurement matrices and the signals at different sensors can be correlated. It is assumed that the measurement matrices are Gaussian random matrices and the signals share a common sparse support. Our model is a generalization of the commonly used DCS model where the measurement matrices are independent and the standard multiple measurement vector (MMV) model where the measurement matrices are identical. Based on the famous approximate message passing (AMP) framework, an algorithm is developed to address the correlated matrices and the correlated signals. Simulations show that the empirical results almost perfectly match the theoretical performance prediction. According to the authors' knowledge, such a match is achieved for the first time.","PeriodicalId":206199,"journal":{"name":"2016 IEEE International Conference on Digital Signal Processing (DSP)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120959715","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}
{"title":"A robust DBN-vector based speaker verification system under channel mismatch conditions","authors":"Disong Wang, Yuexian Zou, J. Liu, Y. Huang","doi":"10.1109/ICDSP.2016.7868523","DOIUrl":"https://doi.org/10.1109/ICDSP.2016.7868523","url":null,"abstract":"Channel variability is one of the largest challenges for speaker verification (SV) techniques. Techniques in the feature, model and score domains have been applied to mitigate the channel impact. In this paper, we strive to study on robust deep feature learning with the deep belief network (DBN) by using traditional spectral features such as MFCC or PLP. In detail, during the training phase, a DBN is trained to map spectral features to the corresponding speaker identity, then deep features extracted at kth hidden layers are selected where k is determined by maximizing the ratio between within-class distance and between-class distance. In the enrollment phase, the well-trained DBN is used to extract deep features at kth hidden layers, then kth-DBN-vector is formed by averaging these features. In the test phase, kth-DBN-vector is extracted for test utterance and compared to the enrolled kth-DBN-vector to make a verification decision. To validate the effectiveness of the learned DBN-vectors for speaker verification, extensive experiments have been purposely conducted on Mandarin corpuses. It is encouraged to see that our proposed DBN-vector based SV system is superior to the state-of-the-art i-vector based SV system under channel mismatch conditions in terms of equal error rate (EER) and minimum detection cost function (minDCF).","PeriodicalId":206199,"journal":{"name":"2016 IEEE International Conference on Digital Signal Processing (DSP)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132857427","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}
{"title":"Camera anomaly detection based on morphological analysis and deep learning","authors":"Lingping Dong, Yongliang Zhang, Conglin Wen, Hongtao Wu","doi":"10.1109/ICDSP.2016.7868559","DOIUrl":"https://doi.org/10.1109/ICDSP.2016.7868559","url":null,"abstract":"Recently, camera anomaly detection has attracted increasing interest in order to generate real-time alerts of camera malfunction for video surveillance systems. The existing camera anomaly detection methods still haven't enough ability to detect comprehensive types of anomaly, and lack the self-improvement ability in the case of miscarriage of justice by self-learning. So, this paper proposes a morphological analysis and deep learning based camera anomaly detection method to detect comprehensive types of anomaly. Morphological analysis is used to detect simple camera anomalies to accelerate the processing speed, and deep learning is utilized to detect complicated camera anomalies to improve the accuracy. The experimental results show that the detection accuracy of the proposed method achieves more than 95%.","PeriodicalId":206199,"journal":{"name":"2016 IEEE International Conference on Digital Signal Processing (DSP)","volume":"232 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134041032","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}
{"title":"Off-grid DOA estimation using temporal block sparse Bayesian inference","authors":"Hongyu Cui, Huiping Duan, Hao Liu","doi":"10.1109/ICDSP.2016.7868546","DOIUrl":"https://doi.org/10.1109/ICDSP.2016.7868546","url":null,"abstract":"By considering the off-grid distance in the sparse reconstruction model, off-grid direction-of-arrival (DOA) estimation can achieve better performance. Most existing off-grid algorithms consider that the snapshots of each source are independent with each other. This contradicts with the realworld scenario, where sources often have temporal structures. To address this issue, we present a new off-grid DOA estimation method, which brings the temporal structures into the off-grid model and a temporal block sparse Bayesian inference is derived. In comparison with the off-grid block sparse Bayesian inference method, the proposed approach achieves higher estimation accuracy for off-grid source directions in low SNR situations. Numerical simulations demonstrate the preferable performance of our method.","PeriodicalId":206199,"journal":{"name":"2016 IEEE International Conference on Digital Signal Processing (DSP)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114997887","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}
Jianyan Liu, Yanmei Zhang, Weijiang Wang, Yilong Lu
{"title":"Generalized design method for the difference co-array of the sum co-array","authors":"Jianyan Liu, Yanmei Zhang, Weijiang Wang, Yilong Lu","doi":"10.1109/ICDSP.2016.7868584","DOIUrl":"https://doi.org/10.1109/ICDSP.2016.7868584","url":null,"abstract":"Active direction of arrival estimation system can significantly improve the degrees of freedom (DOFs), since the vectorized covariance matrix of the data measurements from transmit and receive arrays can be considered as observations from a augmented virtual array, whose elements are given by the difference co-array of the sum co-array (DCSC). This article presents a generalized methodology to design the high performance active non-uniform linear arrays (NLAs) after performing detailed analyses of bridges between active NLAs and passive NLAs. Closed-form solutions in terms of positions of physical/virtual sensors and DOF capacities are derived. Simulation results validate the effectiveness of the proposed method.","PeriodicalId":206199,"journal":{"name":"2016 IEEE International Conference on Digital Signal Processing (DSP)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132159763","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}
{"title":"Deep learning feature representation for electrocardiogram identification","authors":"Xiafei Lei, Yue Zhang, Zongqing Lu","doi":"10.1109/ICDSP.2016.7868505","DOIUrl":"https://doi.org/10.1109/ICDSP.2016.7868505","url":null,"abstract":"This paper presents an efficient and powerful method of electrocardiogram (ECG) identification. Specially, a set of discriminative feature representations can be learned from one-dimensional ECG signals with an arbitrary origin through deep learning, referred to as deep fusion features. Non-linear classifier is adopted to classify test ECG signals. A final simple voting step can further enhance performance. Based on the above steps, our method can reduce the dependence of algorithm accuracy on the origin and length of the ECG signal. Unlike traditional methods, detecting fiducial points and combining features are not required. Moreover, test process can use parallel processing to improve efficiency. The method achieves 99.33% accuracy for a publicly available database. The experiments demonstrate that our method is efficient and powerful in real applications.","PeriodicalId":206199,"journal":{"name":"2016 IEEE International Conference on Digital Signal Processing (DSP)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121926797","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}
{"title":"Compressive sensing based multi-frequency synthesis","authors":"Feng Li, T. Cornwell, F. Hoog, Lei Xin, Yi Guo","doi":"10.1109/ICDSP.2016.7868651","DOIUrl":"https://doi.org/10.1109/ICDSP.2016.7868651","url":null,"abstract":"Most modern radio telescope arrays observe with wideband receivers to optimise signal-to-noise. However for such wideband visibility data, the changing shape of the source with frequency may limit the performance of existing deconvolution methods. In such a case, it is necessary to estimate explicitly the change in brightness with frequency. This is called multifrequency synthesis (MFS). The current MFS methods either work only for the linear spectral model or take a long time to converge. We propose a new method, MFS-CS, to solve the MFS problem based on the theory of compressive sensing (CS). Experimental results show that it provides superior reconstructions compared to a normal deconvolution method (MSCLEAN) and an MFS-based extension (MFS-MSCLEAN). The main advantages of our method are improved efficiency, compatibility to any spectral model and simplicity implementation. MFS-CS is a potential candidate solution for the next generation telescope","PeriodicalId":206199,"journal":{"name":"2016 IEEE International Conference on Digital Signal Processing (DSP)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127107554","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}
{"title":"Deep learning-based recognition of underwater target","authors":"Xu Cao, Xiaomin Zhang, Yang Yu, Letian Niu","doi":"10.1109/ICDSP.2016.7868522","DOIUrl":"https://doi.org/10.1109/ICDSP.2016.7868522","url":null,"abstract":"Underwater target recognition remains a challenging task due to the complex and changeable environment. There have been a huge number of methods to deal with this problem. However, most of them fail to hierarchically extract deep features. In this paper, a novel deep learning framework for underwater target classification is proposed. First, instead of extracting features relying on expert knowledge, sparse autoencoder (AE) is utilized to learn invariant features from the spectral data of underwater targets. Second, stacked autoencoder (SAE) is used to get high-level features as a deep learning method. At last, the joint of SAE and softmax is proposed to classify the underwater targets. Experiment results with the received signal data from three different targets on the sea indicated that the proposed approach can get the highest classification accuracy compared with support vector machine (SVM) and probabilistic neural network (PNN).","PeriodicalId":206199,"journal":{"name":"2016 IEEE International Conference on Digital Signal Processing (DSP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129483396","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}
{"title":"A fast-convergent pre-conditioned conjugate gradient detection for massive MIMO uplink","authors":"Ye Xue, Chuan Zhang, Shunqing Zhang, X. You","doi":"10.1109/ICDSP.2016.7868573","DOIUrl":"https://doi.org/10.1109/ICDSP.2016.7868573","url":null,"abstract":"The scaling up of antennae and terminals in massive multiple-input multiple-output (MIMO) systems helps increase spectral efficiency at the penalty of prohibitive computational complexity. In linear minimum mean square error (MMSE) detection, this complexity is mainly resulted from solving large-scale linear equations. Admittedly, iterative approaches such as conjugate gradient (CG) method have theoretically demonstrated their capability in balancing both performance and complexity for massive MIMO detection. Their convergence rate turns out to be really slow for common applications where the base station-to-user antenna ratio decreases. To this end, by introducing a pre-conditioner based on incomplete Cholesky (IC) factorization, this paper proposes a pre-conditioned conjugate gradient (PCG) method, which successfully speeds up the convergence even for small station-to-user antenna ratio scenarios. The analytical as well as numerical results have indicated that the proposed PCG method outperforms the conventional CG method due to the 50% reduced spectral condition number κ. Complexity analysis shows that the proposed PCG method achieves over 75% reduction compared to the conventional Cholesky factorization scheme when N = 40.","PeriodicalId":206199,"journal":{"name":"2016 IEEE International Conference on Digital Signal Processing (DSP)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116995075","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}
{"title":"Robust particle PHD filter with sparse representation for multi-target tracking","authors":"Zeyu Fu, P. Feng, S. M. Naqvi, J. Chambers","doi":"10.1109/ICDSP.2016.7868562","DOIUrl":"https://doi.org/10.1109/ICDSP.2016.7868562","url":null,"abstract":"Recently, sparse representation has been widely used in computer vision and visual tracking applications, including face recognition and object tracking. In this paper, we propose a novel robust multi-target tracking method by applying sparse representation in a particle probability hypothesis density (PHD) filter framework. We employ the dictionary learning method and principle component analysis (PCA) to train a static appearance model offline with sufficient training data. This pre-trained dictionary contains both colour histogram and oriented gradient histogram (HOG) features based on foreground target appearances. The tracker combines the pre-trained dictionary and sparse coding to discriminate the tracked target from background clutter. The sparse coefficients solved by ℓ1-minimization are employed to generate the likelihood function values, which are further applied in the update step of the proposed particle PHD filter. The proposed particle PHD filter is validated on two video sequences from publicly available CAVIAR and PETS2009 datasets, and demonstrates improved tracking performance in comparison with the traditional particle PHD filter.","PeriodicalId":206199,"journal":{"name":"2016 IEEE International Conference on Digital Signal Processing (DSP)","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124359535","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}