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ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.最新文献

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Additional lossless compression of JPEG images 额外的无损压缩JPEG图像
ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195394
N. Ponomarenko, K. Egiazarian, V. Lukin, J. Astola
{"title":"Additional lossless compression of JPEG images","authors":"N. Ponomarenko, K. Egiazarian, V. Lukin, J. Astola","doi":"10.1109/ISPA.2005.195394","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195394","url":null,"abstract":"The task of additional compression of images earlier coded using JPEG is considered. A novel efficient method for coding quantized DCT coefficients is proposed. It is based on coefficient separation into bit planes, taking into account correlation between the values of neighbor coefficients in blocks, between the values of the corresponding coefficients of neighbor blocks as well as between the corresponding coefficients of different color layers. It is shown that the designed technique allows for images already compressed by JPEG to additionally increase compression ratio by 1.3...2.3 times without introducing additional losses.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"29 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124447865","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: 23
An alternative inverse S-transform for filters with time-frequency localization 具有时频局部化的滤波器的一种替代反s变换
ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195449
Martin Schimmel, J. Gallart, C. Simon
{"title":"An alternative inverse S-transform for filters with time-frequency localization","authors":"Martin Schimmel, J. Gallart, C. Simon","doi":"10.1109/ISPA.2005.195449","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195449","url":null,"abstract":"The S-transform provides a framework for data-adaptive filters which take advantage of time-frequency localized spectra. These filters basically consist in a data transformation to the time-frequency domain, a data-adaptive weighting of the localized spectra, and a back transformation. We illustrate that the inverse S-transform of manipulated spectra not necessarily transforms the localized signals as expected from the imposed weighting. The time localization is not directly translated and spurious signals and noise can be generated. We discuss this problem and suggest a new inverse S-transform which may come helpful to many applications to take more advantage of the time-frequency localization.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124177694","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
Chaotic multiagent system approach for MRF-based image segmentation 基于磁共振成像的混沌多智能体图像分割方法
ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195421
K. Melkemi, M. Batouche, S. Foufou
{"title":"Chaotic multiagent system approach for MRF-based image segmentation","authors":"K. Melkemi, M. Batouche, S. Foufou","doi":"10.1109/ISPA.2005.195421","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195421","url":null,"abstract":"In this paper, we propose a new chaotic approach for image segmentation based on multiagent system (MAS). We consider a set of segmentation agents organized around a coordinator agent. Each segmentation agent performs iterated conditional modes (ICM) starting from its own initial image created using a chaotic mapping. The coordinator agent diversifies the initial images using a crossover and a chaotic mutation operators. The efficiency of our chaotic MAS approach is shown through some experimental results.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126897308","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: 4
Evaluation of texture features based on mutual information 基于互信息的纹理特征评价
ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195415
S. Razniewski, M. Strzelecki
{"title":"Evaluation of texture features based on mutual information","authors":"S. Razniewski, M. Strzelecki","doi":"10.1109/ISPA.2005.195415","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195415","url":null,"abstract":"This article describes a study on features selection methods for classification purposes. A special attention is paid to method based on mutual information known from information theory. For experiments a set of 16 different homogeneous texture images from Brodatz album was selected. Texture features obtained based on mutual information technique was compared to those estimated using two techniques: Fisher coefficient and combined probability of classification error with average feature correlation respectively. Performed experiments shown advantage of features selected using mutual information based approach on texture classification. For additional evaluation of feature selection methods unexampled coefficient, based on classification results for every 1, 2, and 3 feature subsets is proposed. Based on this coefficient it is demonstrated that mutual information value indicates which feature is statistically better for classification. It is also possible to determine the optimal number of histogram bins for discretization of feature values.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134398693","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
Towards person recognition using head dynamics 利用头部动力学实现人的识别
ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195428
F. Matta, Sophia Antipolis, F. Matta, J. Dugelay
{"title":"Towards person recognition using head dynamics","authors":"F. Matta, Sophia Antipolis, F. Matta, J. Dugelay","doi":"10.1109/ISPA.2005.195428","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195428","url":null,"abstract":"This paper describes a new approach for identity recognition using video sequences. While most image and video recognition systems discriminate identities using pixel-based information, our approach exploits the head dynamics; in particular the displacement signals of few head features. Due to the lack of standard video database, identification and verification scores have been obtained using a small collection of video sequences. The results for this preliminary approach are nevertheless encouraging.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132151447","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
Local search particle filter applied to human-computer interaction 局部搜索粒子滤波在人机交互中的应用
ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195423
J. Pantrigo, A. S. Montemayor, A. Sánchez
{"title":"Local search particle filter applied to human-computer interaction","authors":"J. Pantrigo, A. S. Montemayor, A. Sánchez","doi":"10.1109/ISPA.2005.195423","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195423","url":null,"abstract":"This paper presents an hybridization of particle filter and local search algorithms, called local search particle filter (LSPF), and its application to human-computer interaction. The proposed algorithm combines both sequential Monte Carlo (particle filter - PF) and local search methods to achieve an accurate real-time hand tracking. The system allows to control different mouse actions through a reduced set of hand movements and gestures. Hand are segmented using a skin-color model based on explicit RGB region definition. The proposed hybrid tracking method increases the performance of general particle filter. It also improves the quality of the hand tracking task (the standard deviation between hand spatial positions for LSPF is reduced a 75% with respect to the PF algorithm). More precisely, a local search enhances a hand-simulated mouse cursor to smoothly move and thus recognize gestures for performing their associate actions.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132798655","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: 6
3D quantification of facial edemas 面部水肿的三维量化
ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195408
N. Brusco, G. Bardella, A. Paviotti
{"title":"3D quantification of facial edemas","authors":"N. Brusco, G. Bardella, A. Paviotti","doi":"10.1109/ISPA.2005.195408","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195408","url":null,"abstract":"This work presents a procedure for the 3D quantification of facial edemas. This issue is instrumental for assessing the effectiveness of specific drugs and/or surgical provisions in facial surgery. The considered problems are the automatic acquisition of face masks of adequate precision, the registration of the 3D masks of the same patient taken at different times during the edema evolution and the estimate of the volume characterizing the edema.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120957513","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
Motion analysis in handball - a review 手球运动分析综述
ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195435
C. Lopez, P. Platen
{"title":"Motion analysis in handball - a review","authors":"C. Lopez, P. Platen","doi":"10.1109/ISPA.2005.195435","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195435","url":null,"abstract":"The presentation gives a short overview on the available computer- and video-analysis systems in team sports in the fields of biomechanics, for the determination of the muscular status of a player, for the planning of training and analysis of competition, for the technical and tactical analysis of a match, as well as for the determination of the physiological demands like run distances, velocities, and sports specific movements. We give some examples of the combined analysis of heart rates and run distances and velocities in female top level handball teams. We furthermore summarize the needs and information that should be available for a trainer in order to optimize and individualize training and performance during competition.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116045285","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
Cardiac motion quantification: a new software based on non-rigid registration 心脏运动量化:一种基于非刚性配准的新软件
ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195399
V. Verdugo, M. Ledesma-Carbayo, Patricia Mahía, Andres Santos, Miguel A. García-Fernández, M. Desco
{"title":"Cardiac motion quantification: a new software based on non-rigid registration","authors":"V. Verdugo, M. Ledesma-Carbayo, Patricia Mahía, Andres Santos, Miguel A. García-Fernández, M. Desco","doi":"10.1109/ISPA.2005.195399","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195399","url":null,"abstract":"Evaluation of regional myocardial function using non-invasive techniques is an important goal in clinical cardiology. This work presents a new methodology and software developed for this task, its main features are the visualization and quantification of the motion and deformation of the myocardial wall along the cardiac cycle, using sequences of ultrasound or magnetic resonance images. The software measures displacement of the different sections of the cardiac wall, and calculates velocity, strain and strain rate, in their radial and longitudinal or circumferential components. These parameters can also be displayed as a parametric image in color superposed to the original one. To evaluate the software and method, a clinical trial has been carried out on 12 sequences of healthy subjects and 12 sequences of patients, showing that this application could be a useful tool for the diagnosis of cardiac ischemic disease.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127109051","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
A review of recent results in multiple target tracking 多目标跟踪的最新研究成果综述
ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195381
W. Ng, J. Li, S. Godsill, J. Vermaak
{"title":"A review of recent results in multiple target tracking","authors":"W. Ng, J. Li, S. Godsill, J. Vermaak","doi":"10.1109/ISPA.2005.195381","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195381","url":null,"abstract":"In this paper, we present a simulation-based method for multitarget tracking and detection using sequential Monte Carlo (SMC), or particle filtering (PF) methods. The proposed approach is applicable to nonlinear and non-Gaussian models for the target dynamics and measurement likelihood, where the environment is characterised by high clutter rate and low detection probability. The number of targets is estimated by continuously monitoring the events being represented by the regions of interest (ROIs) in the surveillance region. It follows that the proposed approach utilises the sequential importance sampling filter for recursive target state estimation, in conjunction with a 2-D data assignment method for measurement-to-target association. Computer simulations are also included to demonstrate and evaluate the performance of the proposed approach.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116732578","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
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