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2012 IEEE 11th International Conference on Signal Processing最新文献

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Interval weighted multi-template matching for accurate measurement 区间加权多模板匹配，精确测量
2012 IEEE 11th International Conference on Signal Processing Pub Date : 2012-10-01 DOI: 10.1109/ICOSP.2012.6492048
Xiaoli Li, Q. Ruan, Gaoyun An, Chengxiong Ruan
{"title":"Interval weighted multi-template matching for accurate measurement","authors":"Xiaoli Li, Q. Ruan, Gaoyun An, Chengxiong Ruan","doi":"10.1109/ICOSP.2012.6492048","DOIUrl":"https://doi.org/10.1109/ICOSP.2012.6492048","url":null,"abstract":"This paper employs the interval weighted multi-template matching approach for accurate measurement. Generally, a vernier caliper is used as the subject to capture the analyzing image. However, the vernier caliper has many similar regions which all effect the measure accuracy. The traditional template matching with only one template is not suitable, as the matching region may only stands for one local region. To reduce this effect, the multi-template matching is employed to get different matching regions with different templates. Then the interval which the matching result belongs to is weighted, and the final measure accuracy is obtained based on the weighted average approach. Compared with the true value, the final result is just sub-pixel error which shows that the interval weighted multi-template matching method is efficient for accurate measurement and it's simple to implement.","PeriodicalId":143331,"journal":{"name":"2012 IEEE 11th International Conference on Signal Processing","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131299899","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
Analysis of cerebral ischemia MRI images using non-rigid registration 脑缺血MRI图像的非刚性配准分析
2012 IEEE 11th International Conference on Signal Processing Pub Date : 2012-10-01 DOI: 10.1109/ICOSP.2012.6491742
Rui Wang, Shiteng Suo, Dan Wang, Yuehua Li, Su Zhang
{"title":"Analysis of cerebral ischemia MRI images using non-rigid registration","authors":"Rui Wang, Shiteng Suo, Dan Wang, Yuehua Li, Su Zhang","doi":"10.1109/ICOSP.2012.6491742","DOIUrl":"https://doi.org/10.1109/ICOSP.2012.6491742","url":null,"abstract":"In diagnosis and treatment of brain diseases, doctors often need to observe the lesions at different time to evaluate the changing conditions of the diseases or judge the effect of treatment. In this paper, we employ two non-rigid registration methods to match MR images of cerebral ischemia in different periods, including a non-rigid registration algorithm based on free-form deformation (FFD) model and a DEMONS registration algorithm which is used to be compared with the FFD method. The results of our experiments suggest that non-rigid registration works well on realistic data of brain lesions with small deformation (k=0.5∼0.8) and the cross correlation coefficients (CC) increases from 0.406 before registration to 0.683 after FFD registration and 0.728 after DEMONS registration.","PeriodicalId":143331,"journal":{"name":"2012 IEEE 11th International Conference on Signal Processing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125568020","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
Designing digital IIR low-pass differentiators with multi-objective optimization 多目标优化的数字IIR低通微分器设计
2012 IEEE 11th International Conference on Signal Processing Pub Date : 2012-10-01 DOI: 10.1109/ICOSP.2012.6491617
S. Skogstad, S. Holm, M. Høvin
{"title":"Designing digital IIR low-pass differentiators with multi-objective optimization","authors":"S. Skogstad, S. Holm, M. Høvin","doi":"10.1109/ICOSP.2012.6491617","DOIUrl":"https://doi.org/10.1109/ICOSP.2012.6491617","url":null,"abstract":"In this paper we examine the possibility of designing IIR low-pass differentiators by approaching it as a weighted multi-objective optimization problem and solving it with an unbiased metaheuristic search algorithm. By collecting several solutions with different sets of weights we are able to make a thorough comparison of different design strategies. We present possible designs that are realizable with (1) cascading classical IIR low-pass filters with appropriate operators, and (2) non-cascaded general IIR differentiator designs. Elliptical filters are found to be the most magnitude-optimal among the first type. However, the non-cascaded approach found more optimal IIR differentiators at the expense of a more complicated search. Finally, we present some non-cascaded general designs that compare favorably with the available designs given in literature, and which we reason are nearly optimal.","PeriodicalId":143331,"journal":{"name":"2012 IEEE 11th International Conference on Signal Processing","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126380356","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: 7
Constructions of irregular nonbinary QC-LDPC codes: Cyclotomic coset approach 不规则非二进制QC-LDPC码的构造:分环协集法
2012 IEEE 11th International Conference on Signal Processing Pub Date : 2012-10-01 DOI: 10.1109/ICOSP.2012.6491852
Meng Lu, Lijun Zhang
{"title":"Constructions of irregular nonbinary QC-LDPC codes: Cyclotomic coset approach","authors":"Meng Lu, Lijun Zhang","doi":"10.1109/ICOSP.2012.6491852","DOIUrl":"https://doi.org/10.1109/ICOSP.2012.6491852","url":null,"abstract":"A cyclotomic coset approach for constructions of irregular nonbinary quasi-cyclic low-density parity-check (QC-LDPC) codes of short length is proposed. QC-LDPC codes obtained by this method perform reasonably well over the additive white Gaussian noise (AWGN) channel with iterative decoding in terms of bit-error performance, error-floor, and decoding convergence with low decoding complexity.","PeriodicalId":143331,"journal":{"name":"2012 IEEE 11th International Conference on Signal Processing","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126446510","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
An algorithm of edge detection based on soft morphology 一种基于软形态学的边缘检测算法
2012 IEEE 11th International Conference on Signal Processing Pub Date : 2012-10-01 DOI: 10.1109/ICOSP.2012.6491626
J. Shang, Feng-jiao Jiang
{"title":"An algorithm of edge detection based on soft morphology","authors":"J. Shang, Feng-jiao Jiang","doi":"10.1109/ICOSP.2012.6491626","DOIUrl":"https://doi.org/10.1109/ICOSP.2012.6491626","url":null,"abstract":"An algorithm of edge detection based on mathematical morphology is discussed in the paper. Due to the characteristics of the basic morphology algorithm of image processing, the common edge detection algorithms with traditional morphological edge detection algorithm are analyzed and compared, and the characteristics of each, as well as inadequateness are given here. Combined with the geometric algorithms, applied to binary gray scale image edge detection, based on the classic edge detection algorithms and soft filtering properties, the morphology of the soft edge detection algorithm and optimization algorithm is put forward for the edge detection and image de-noising processing.","PeriodicalId":143331,"journal":{"name":"2012 IEEE 11th International Conference on Signal Processing","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122971864","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
License plate character segmentation algorithm based on variable-length template matching 基于变长模板匹配的车牌字符分割算法
2012 IEEE 11th International Conference on Signal Processing Pub Date : 2012-10-01 DOI: 10.1109/ICOSP.2012.6491736
Ligang Miao
{"title":"License plate character segmentation algorithm based on variable-length template matching","authors":"Ligang Miao","doi":"10.1109/ICOSP.2012.6491736","DOIUrl":"https://doi.org/10.1109/ICOSP.2012.6491736","url":null,"abstract":"This paper proposes a variable-length template matching method for license plate (LP) character segmentation, according to the characteristics of horizontal and vertical projections. Firstly, it corrects skew and shear distortion with LP boundary and character arrangement rule to get frontal-parallel view of LP regions. Secondly, it projects horizontal gradient of LP along horizontal direction, and uses a set of variable-length single square wave templates to match the horizontal projection of LP's horizontal gradient, thus, to get the top and bottom boundaries of all LP characters. Then, according to the ratio between character with and character space, it designs another set of variable-length templates with seven square waves to match the vertical projections of LP's vertical gradient, and solves the left and right boundary of all LP characters simultaneously. This method can deal with non-uniform illumination, scale change, perspective distortion, image deterioration, background interference and so on, and it can achieve accurate boundaries of LP characters effectively.","PeriodicalId":143331,"journal":{"name":"2012 IEEE 11th International Conference on Signal Processing","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123095243","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: 8
Research on abnormal search method of monitoring parameters for power plant equipment based on cluster analysis 基于聚类分析的电厂设备监测参数异常搜索方法研究
2012 IEEE 11th International Conference on Signal Processing Pub Date : 2012-10-01 DOI: 10.1109/ICOSP.2012.6492047
G.K. Zhang, Y.J. Gu, N.C. Huang, Q.Y. Xie, H. Liang
{"title":"Research on abnormal search method of monitoring parameters for power plant equipment based on cluster analysis","authors":"G.K. Zhang, Y.J. Gu, N.C. Huang, Q.Y. Xie, H. Liang","doi":"10.1109/ICOSP.2012.6492047","DOIUrl":"https://doi.org/10.1109/ICOSP.2012.6492047","url":null,"abstract":"In order to maintain the security, reliability and economy in actual production process and evaluate the health of operation status of power plant equipment, an abnormal search method of online monitoring parameters is proposed in this paper. By containing an integration of a large number of historical data and real-time data, the abnormal search method of online monitoring parameters can search out some special data or data segments that are significant and different from other data in the time subsequence of the monitoring parameters. In the abnormal parameter search process, it needs a segmentation of the time sequence based on some important points and the extraction of eigenvalues with the sub-patterns of the time subsequence. Then it is necessary to map the time subsequence to a high-dimensional feature space and grub the anomaly information from the perspective of model so as to obtain the set of anomaly parameters. It is of great significance to search out the obviously inconsistent data or behaviors from the other general patterns in the time series of online monitoring parameters for the early failure warning of the large and complex equipment.","PeriodicalId":143331,"journal":{"name":"2012 IEEE 11th International Conference on Signal Processing","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125714796","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
Utility-based cross-layer scheduling design for OFDMA-based cognitive radio systems 基于ofdma的认知无线电系统的跨层调度设计
2012 IEEE 11th International Conference on Signal Processing Pub Date : 2012-10-01 DOI: 10.1109/ICOSP.2012.6491865
Honglin Zhao, Libiao Yang
{"title":"Utility-based cross-layer scheduling design for OFDMA-based cognitive radio systems","authors":"Honglin Zhao, Libiao Yang","doi":"10.1109/ICOSP.2012.6491865","DOIUrl":"https://doi.org/10.1109/ICOSP.2012.6491865","url":null,"abstract":"Cognitive radio makes it possible for an unlicensed user to access a spectrum opportunistically on the basis of non-interfering with licensed users. In this paper, we investigate the performance of opportunistic scheduling in an OFDMA-based cognitive radio (CR) systems by taking into the CR user's raw sensing information (RSI). We shall rely on the joint design framework to optimize a system utility, which adapts the packet delay and the throughput across the secondary users (under an average interference and total available power constraint) to guarantee Quality of Service (QoS) of the whole system. By maximizing the delay and throughput-based utility function, we can get the optimal subcarrier selection policy, power and modulation allocation for each SU's packet. Simulation results are presented to demonstrate the effectiveness of the proposed scheme.","PeriodicalId":143331,"journal":{"name":"2012 IEEE 11th International Conference on Signal Processing","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126051123","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
General method for empirical data decomposition filtering design 经验数据分解滤波设计的一般方法
2012 IEEE 11th International Conference on Signal Processing Pub Date : 2012-10-01 DOI: 10.1109/ICOSP.2012.6491591
Xiaoqin Wu, Zhen Guo, Hongke Zhang
{"title":"General method for empirical data decomposition filtering design","authors":"Xiaoqin Wu, Zhen Guo, Hongke Zhang","doi":"10.1109/ICOSP.2012.6491591","DOIUrl":"https://doi.org/10.1109/ICOSP.2012.6491591","url":null,"abstract":"Based on the research on Empirical Data Decomposition (EDD), the structure for Empirical Data Decomposition is proposed in which the high pass filter is composed of a predictor and an adder. In terms of reconstructing requirement, the filter design rule is presented when the EDD analysis filter and synthesis filter are restricted as FIR filter. The relationship between equivalent synthesis filter and analysis filter is also presented. Finally the structure for the synthesis filter is discussed. Except for the FIR requirement, there is no additional restriction for the predictor, so the filter can be easily designed to satisfy different requirements. EDD is suitable not only for stationary data analysis or piece-wise stationary data analysis but also for non-stationary data analysis.","PeriodicalId":143331,"journal":{"name":"2012 IEEE 11th International Conference on Signal Processing","volume":"34 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114080675","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
Facial expression analysis using a sparse representation based space model 基于空间稀疏表示模型的面部表情分析
2012 IEEE 11th International Conference on Signal Processing Pub Date : 2012-10-01 DOI: 10.1109/ICOSP.2012.6491899
Weifeng Liu, Caifeng Song, Yanjiang Wang
{"title":"Facial expression analysis using a sparse representation based space model","authors":"Weifeng Liu, Caifeng Song, Yanjiang Wang","doi":"10.1109/ICOSP.2012.6491899","DOIUrl":"https://doi.org/10.1109/ICOSP.2012.6491899","url":null,"abstract":"With the development of information technologies, facial expression analysis becomes more and more essential to human computer interaction (HCI). A natural way to analysis facial expression is derived from the study on human emotion which is regarded as the intrinsic origin of facial expression. Another issue for facial expression analysis is to extract substaintial facial features that correspond with visual perception system. Based on these observations, we present a sparse representation based space model for facial expression analysis which applies Gabor filters to extract facial features. The sparse representation based facial expression space model is induced from human emotion space and then can describe mixture facial expressions which are usual in daily life. Experiments on JAFFE database demonstrate the validity of the proposed facial expression space model.","PeriodicalId":143331,"journal":{"name":"2012 IEEE 11th International Conference on Signal Processing","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114081449","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
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