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2011 International Conference on Multimedia and Signal Processing最新文献

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An Embedded System for Pulse Wave Acquisition and Processing 一种嵌入式脉冲波采集与处理系统
2011 International Conference on Multimedia and Signal Processing Pub Date : 2011-05-14 DOI: 10.1109/CMSP.2011.147
Xia Zhang, Wuyin Jin, Hongru Du, Xiaoling Qi, Aihua Zhang
{"title":"An Embedded System for Pulse Wave Acquisition and Processing","authors":"Xia Zhang, Wuyin Jin, Hongru Du, Xiaoling Qi, Aihua Zhang","doi":"10.1109/CMSP.2011.147","DOIUrl":"https://doi.org/10.1109/CMSP.2011.147","url":null,"abstract":"Based on ARM9, an embedded operating system was developed for pulse wave acquisition and processing in this work, it consists of an integrated pulse sensor, signal modulation circuit, data acquisition unit, USB communication module, data storage display module. Using this system, the changes in of four volunteers (2 women and 2 men) pulse and the difference between them were studied by amplitude and phase index of correlation integral, respectively. The results suggested that the human pulse similarity of phase more stabile than of amplitude, the value index have one parabola-growth process in the afternoon and this analysis can reflect the underlying crisis.","PeriodicalId":309902,"journal":{"name":"2011 International Conference on Multimedia and Signal Processing","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129053934","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
Comparison of EEG Forward Solutions in Two Head Models 两种头部模型的脑电图正解比较
2011 International Conference on Multimedia and Signal Processing Pub Date : 2011-05-14 DOI: 10.1109/CMSP.2011.128
Li Peng, M. Peng, Yujian Jiao, A. Xu
{"title":"Comparison of EEG Forward Solutions in Two Head Models","authors":"Li Peng, M. Peng, Yujian Jiao, A. Xu","doi":"10.1109/CMSP.2011.128","DOIUrl":"https://doi.org/10.1109/CMSP.2011.128","url":null,"abstract":"Head model and an efficient method for computing the forward EEG (electroencephalography)problem are essential to dipole source localization(DSL). In this paper, weinvestigate the numerical solutions of the scalp potentials in two head models, an ovoid head model and spherical model by using Weighted Residuals BEM based on two kinds of basis functions. The comparison of the maps of scalppotentials versus different dipole parameters in two models is made. The relative differences of potential, computing time and reliability are also presented. The results show that the patterns of potentials in different head shapes are similar but there is difference in magnitude of potential. The dipole position has great effect on the shift of peak potential. The method based on orthogonal basis is superior to that based on constant basis in computing time and accuracy.","PeriodicalId":309902,"journal":{"name":"2011 International Conference on Multimedia and Signal Processing","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130505435","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 Fast SIFT Feature Matching Algorithm for Image Registration 图像配准中一种快速SIFT特征匹配算法
2011 International Conference on Multimedia and Signal Processing Pub Date : 2011-05-14 DOI: 10.1109/CMSP.2011.24
Kun Li, Shangbo Zhou
{"title":"A Fast SIFT Feature Matching Algorithm for Image Registration","authors":"Kun Li, Shangbo Zhou","doi":"10.1109/CMSP.2011.24","DOIUrl":"https://doi.org/10.1109/CMSP.2011.24","url":null,"abstract":"In this paper, a novel fast SIFT (Scale Invariant Feature Transform) feature matching algorithm for image registration is presented. Firstly, for fast SIFT feature matching, we propose a method to optimize the priority k-d tree search algorithm by choosing a proper number of leaf nodes examined (denoted as Emax) in a single k-d tree. In order to get the relationships among the number of SIFT features, Emax and the precisions achieved by the priority k-d tree search algorithm in a single k-d tree, the properties of a single k-d tree and that of the priority k-d tree search algorithm are combined. Referring to these relationships, a proper value of Emax can be selected to achieve an approximate precision in fast time. And then, in image registration, in order to improve matching precision, we have designed the bidirectional priority k-d tree search algorithm in this paper. I. e. the priority k-d tree search algorithm is used twice.","PeriodicalId":309902,"journal":{"name":"2011 International Conference on Multimedia and Signal Processing","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116903012","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: 9
Adaptive Speech Enhancement Based on Classification of Voiced/Unvoiced Signal 基于浊音/浊音信号分类的自适应语音增强
2011 International Conference on Multimedia and Signal Processing Pub Date : 2011-05-14 DOI: 10.1109/CMSP.2011.150
Zhang Jun-chang, Zhang Yi, Ye Zhen
{"title":"Adaptive Speech Enhancement Based on Classification of Voiced/Unvoiced Signal","authors":"Zhang Jun-chang, Zhang Yi, Ye Zhen","doi":"10.1109/CMSP.2011.150","DOIUrl":"https://doi.org/10.1109/CMSP.2011.150","url":null,"abstract":"At low SNR's, the conventional wavelet enhancement algorithm may lose some useful ingredients of the speech, resulting in a low enhancement performance. To solve the problem, this paper presents an improved wavelet enhancement algorithm based on the classification of the voiced/unvoiced signal. First, we eliminate part of the noise through spectral subtraction algorithm and separate voiced signal from unvoiced signal according to its short-time energy. Second, the Wavelet Packet Transform (WPT) is made on unvoiced speech to prevent signal distortion. Then dynamic thresholds are applied to different wavelet analytical scales to avoid a much smoother signal waveform. Finally, a new adaptive threshold function is used to make up the disadvantages of soft and hard thresholding algorithm. Experiments show that the proposed method can remove much noise while keeping intelligibility of the reconstructed speech.","PeriodicalId":309902,"journal":{"name":"2011 International Conference on Multimedia and Signal Processing","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131584393","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
User-Specific Video Summarization 用户特定的视频摘要
2011 International Conference on Multimedia and Signal Processing Pub Date : 2011-05-14 DOI: 10.1109/CMSP.2011.51
Xiang Wang, J. Chen, Cai-Zhi Zhu
{"title":"User-Specific Video Summarization","authors":"Xiang Wang, J. Chen, Cai-Zhi Zhu","doi":"10.1109/CMSP.2011.51","DOIUrl":"https://doi.org/10.1109/CMSP.2011.51","url":null,"abstract":"We define a user-specific video summarization problem. With a comprehensive understanding of the challenges ( semantic and intention gaps), we simplify the problem with some assumptions, and formalize it into an optimization problem, which is intractable to solve directly. We propose a Bayesian and video hypergraph framework for video summarization. The Bayesian framework aims at analyzing users' browsing logs and inferring users' preference towards videos. There are two distinct features involved this framework, continuous streaming collaborative filtering via random walks, and modeling users' preference by Latent Dirichlet Allocation ( LDA ). LDA is also used as a dimension reduction method. With users' preference probabilities calculated in Bayesian framework, the optimization can be integrated into a video hypergraph framework in order to guarantee the coherence of video summary. We finally approximately solve the optimization problem by choosing representative clips within sub-graph partitioned by spectral clustering. Experiments show that our solution supports user-specific video summarization.","PeriodicalId":309902,"journal":{"name":"2011 International Conference on Multimedia and Signal Processing","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122366637","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
Color Demosaicking for Complementary Color Filter Array 互补色滤波器阵列的色彩去马赛克
2011 International Conference on Multimedia and Signal Processing Pub Date : 2011-05-14 DOI: 10.1109/CMSP.2011.127
Chen Wei-gang
{"title":"Color Demosaicking for Complementary Color Filter Array","authors":"Chen Wei-gang","doi":"10.1109/CMSP.2011.127","DOIUrl":"https://doi.org/10.1109/CMSP.2011.127","url":null,"abstract":"Most consumer-level digital camcorders use a complementary color filter array (CCFA) to capture the colors of the scene. To render a full color image, an interpolation process, commonly know as demosaicking, is required. However, most demosaicking techniques proposed in the literature are developed for Bayer CFA. These algorithms cannot be directly adopted in CCFA because they have quite different filter array pattern. This paper presents a new edge-adaptive color interpolation approach for CCFA. It consists of two successive steps: interpolating in horizontal direction, and then an edge-directed interpolation is applied in vertical or diagonal direction. Experimental results confirm the performance of this algorithm both objectively and subjectively.","PeriodicalId":309902,"journal":{"name":"2011 International Conference on Multimedia and Signal Processing","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128130397","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
Performance Analysis of Two Kinds of Uniform Circular Arrays 两种均匀圆形阵列的性能分析
2011 International Conference on Multimedia and Signal Processing Pub Date : 2011-05-14 DOI: 10.1109/CMSP.2011.102
Wu Yao, Chen Hui
{"title":"Performance Analysis of Two Kinds of Uniform Circular Arrays","authors":"Wu Yao, Chen Hui","doi":"10.1109/CMSP.2011.102","DOIUrl":"https://doi.org/10.1109/CMSP.2011.102","url":null,"abstract":"The performance of the directions-of-arrival (DOA) estimation is a strong function of array geometry configuration. Nowadays the Uniform Circular Arrays (UCA) arouse more and more attention due to their remarkable characteristics. In this paper, we derive the ambiguity formulation, the resolution and Cramer-Rao Lower Bound (CRLB) functions on the basis of the study of data model, the radiation pattern and the array structures. Then the influence factors on the two kinds of UCA's angle ambiguity characteristic, such as the radius, the numbers of array elements and the elevation are systematically studied. In this paper we also systematically study the factors that can influence the resolution and CRLB's values. The paper concludes by demonstrating the simulations that the theoretical analysis is certified correct.","PeriodicalId":309902,"journal":{"name":"2011 International Conference on Multimedia and Signal Processing","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124892733","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
Effects of Electrode Insertion Depth on Mandarin Speech Understanding Using Combined Electric and Acoustic Stimulation 电声联合刺激下电极插入深度对普通话语音理解的影响
2011 International Conference on Multimedia and Signal Processing Pub Date : 2011-05-14 DOI: 10.1109/CMSP.2011.148
Tian Guan, Qin Gong, Zhe Li
{"title":"Effects of Electrode Insertion Depth on Mandarin Speech Understanding Using Combined Electric and Acoustic Stimulation","authors":"Tian Guan, Qin Gong, Zhe Li","doi":"10.1109/CMSP.2011.148","DOIUrl":"https://doi.org/10.1109/CMSP.2011.148","url":null,"abstract":"Experiments based on combined electric andacoustic stimulation (EAS) had acquired a good recovery effecton English-speaking patients with moderate to severehigh-frequency hearing loss. This paper focused on the effect ofthe electrode insertion depth on Mandarin speechunderstanding when using EAS. Through acoustic simulationexperiments in large amount of Mandarin material generatedby EAS simulation model, we assessed the recognitionaccuracy in vowels, consonants, numbers, tones and singlewords, and discussed the effect of the electrode insertion depth.The recognition scores of all kinds of materials droppedrespectively with the decreasing insertion depth, whichsuggested that electrodes as long as possible for specificpatients were preferable to recover their speech recognition.However, long electrodes increase the risk of damagingresidual low-frequency hearing. Therapist should strike abalance between recovery effect and risks.","PeriodicalId":309902,"journal":{"name":"2011 International Conference on Multimedia and Signal Processing","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124930106","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
Median Filter Based FM Interference Suppression for PRC-CW Radar 基于中值滤波的PRC-CW雷达调频干扰抑制
2011 International Conference on Multimedia and Signal Processing Pub Date : 2011-05-14 DOI: 10.1109/CMSP.2011.151
Zhi-hua Wang, Zhao Zhao, Xiang-Quan Shi
{"title":"Median Filter Based FM Interference Suppression for PRC-CW Radar","authors":"Zhi-hua Wang, Zhao Zhao, Xiang-Quan Shi","doi":"10.1109/CMSP.2011.151","DOIUrl":"https://doi.org/10.1109/CMSP.2011.151","url":null,"abstract":"The influence of FM interference on correlation detection performance of the pseudo random code continuous wave (PRC-CW) radar is analyzed. It is found that the correlation output deteriorates greatly when the FM interference power exceeds the anti-jamming limitation of the radar. A new method is proposed based on adaptive STFT and median filter for FM interference suppression. This method implements the filtering of the received signal by substituting the median filter output for only a portion of the TF plane corrupted by the interference. The echo signals corrupted by two types of interference including linear FM (LFM) and sinusoidal FM (SFM) forms under different signal-to-jamming ratio (SJR) situations are simulated. It is shown that the method can effectively suppress the FM interference and improve the performance of target detection significantly.","PeriodicalId":309902,"journal":{"name":"2011 International Conference on Multimedia and Signal Processing","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121811738","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
Direction of Arrival Tracking under Various Degrees of Correlation 不同相关度下的到达方向跟踪
2011 International Conference on Multimedia and Signal Processing Pub Date : 2011-05-14 DOI: 10.1109/CMSP.2011.21
Sherif Elsanadily, H. E. A. Badr, Z. Nossair, Osama M. Elghandour
{"title":"Direction of Arrival Tracking under Various Degrees of Correlation","authors":"Sherif Elsanadily, H. E. A. Badr, Z. Nossair, Osama M. Elghandour","doi":"10.1109/CMSP.2011.21","DOIUrl":"https://doi.org/10.1109/CMSP.2011.21","url":null,"abstract":"The tracking devices in the cellular networks or the tracking radars prefer to have an estimated covariance matrix in a single snapshot to estimate the next direction of the moving target.They have achieved great success in tracking when the targets are uncorrelated. Recent research provides the deflation approach to estimate the direction of arrival (DOA) of stationary targets by using symmetric uniform linear arrays (ULAs) under different unknown fading conditions. In this paper, a modified deflation approach using an adaptive signal processing is proposed to achieve DOA tracking capability for moving targets under various degrees of correlation. Computer simulation results are provided to verify the theoritical analysis of the proposed method.","PeriodicalId":309902,"journal":{"name":"2011 International Conference on Multimedia and Signal Processing","volume":"225 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122673521","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
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