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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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Topologically robust 3D modeling for shape approximation 拓扑鲁棒三维建模的形状逼近
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.2005.195388
J. Doi, W. Sato
{"title":"Topologically robust 3D modeling for shape approximation","authors":"J. Doi, W. Sato","doi":"10.1109/ISPA.2005.195388","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195388","url":null,"abstract":"This paper proposes a topologically robust and accurate shape modeling procedure that approximates a real 3D object based not on the widely used so-called ICP (iterative closed point) algorithm or the Delaunay triangulation for the noise resistive modeling and for the matrix-form meshing. A geometric model with desired meshing, not limited to a triangular one, but also quadrilateral, hexagonal or n-gonal mesh, is directly reconstructed based on a solid modeling approach. The radial distance of each scanning point from the axis of the cylindrical coordinates is measured using a laser triangulation sensor. The angular and vertical positions of the laser beam are two other coordinate values of the scanning to be simultaneously acquired. A face array listing (topology), which defines the vertex (sampling point) connectivity and the shape of the mesh, is assigned to meet the desired meshing, including that for watermarking. An example shows the procedure is immune to occasional triangulation noises. Stable meshing, and hence, an accurate shape approximation, free from the misconnection unavoidable in the ICP-based modeling, is then accomplished. This proposal allows a versatile, accurate and practical shape approximation, though limited to a one-axis rotational application at this moment.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"112 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":"128422179","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
The 1st BioSecure Residential Workshop 第一届生物安全住宅工作坊
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.2005.195418
G. Chollet, G. Aversano, B. Dorizzi, D. Petrovska-Delacrétaz
{"title":"The 1st BioSecure Residential Workshop","authors":"G. Chollet, G. Aversano, B. Dorizzi, D. Petrovska-Delacrétaz","doi":"10.1109/ISPA.2005.195418","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195418","url":null,"abstract":"The widespread adoption of biometric technologies has proved to be slower and less enthusiastic than predicted, especially in Europe. In order to overcome the current impediments and limitations in existing biometric systems, and thus to increase trust and confidence in biometric solutions, the BioSecure Network of Excellence (NoE) works though integrating multidisciplinary research efforts and facilitating objective evaluations to address a range of challenging issues in the field of biometrics. To achieve these goals the BioSecure Network of Excellence takes in charge the development or improvement of existing open-source systems for speech, face, talking face, signature, fingerprint, hand and iris modalities, as well as for development of multi-modal biometric experiments. These reference systems along with existing publicly available databases and assessment protocols define the building blocks of the BioSecure Integrated Performance Evaluation Framework. This evaluation framework will be put in practice during the 1st BioSecure Residential Workshop. More than sixty doctoral, postdoctoral, senior and invited researchers will meet together during four weeks, to advance mono-modal and multi-modal evaluation experiments integrating reference systems and research prototypes. In this paper more details about this event and the underling research challenges are given. This exercise will lead to a worldwide biometric evaluation campaign to be launched in 2007.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"191 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":"114858549","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
Adapting a high quality audiovisual database to PDA quality 使高质量的视听数据库适应PDA质量
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.2005.195420
Kevin McTait, H. Bredin, Silvia Colón, Thomas Fillon, Gérard Chollet
{"title":"Adapting a high quality audiovisual database to PDA quality","authors":"Kevin McTait, H. Bredin, Silvia Colón, Thomas Fillon, Gérard Chollet","doi":"10.1109/ISPA.2005.195420","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195420","url":null,"abstract":"Audiovisual sequences in the BANCA database are degraded in quality so that they resemble audiovisual sequences recorded using the in-built sensors of a handheld PDA device. The quality of the new database is therefore reduced on a number of levels, but the recordings remain equivalent. This process is applicable for any given high quality audiovisual database and set of lower quality sensors. More specifically, this work has been carried out in the context of the SecurePhone project, the aim of which is to develop a multimodal biometric identity verification system embedded on a PDA device. Initial results show that this adaptation process produces adequate audiovisual sequences for a given PDA device, removing the need to record a training database for each new PDA device.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"18 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":"124152740","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
Biased nature of Bhattacharyya coefficient in correlation of gray-scale objects 灰度对象关联中Bhattacharyya系数的偏置性
ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.4304/jmm.1.1.56-61
M. S. Khalid, M. U. Ilyas, M. Sarfaraz, M. A. Ajaz
{"title":"Biased nature of Bhattacharyya coefficient in correlation of gray-scale objects","authors":"M. S. Khalid, M. U. Ilyas, M. Sarfaraz, M. A. Ajaz","doi":"10.4304/jmm.1.1.56-61","DOIUrl":"https://doi.org/10.4304/jmm.1.1.56-61","url":null,"abstract":"Bhattacharyya coefficient is a popular method that uses color histograms to correlate images. In this paper, we show that when this method is applied to gray scale images, it produces biased results. The biased nature is explored and demonstrated through numerous experiments with different kinds of non-rigid maneuvering objects in cluttered and less cluttered environments. The spectral performance of the Bhattacharyya curve is compared with the spatial matching criterion i.e. mean square difference.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"48 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":"124324249","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: 58
Fingerprint classification using a homogeneity structure of fingerprint's orientation field and neural net 基于指纹方向场均匀性结构和神经网络的指纹分类
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.2005.195375
Dubravko Krašnjak, V. Krivec, Siemens D D Zagreb, Croatia
{"title":"Fingerprint classification using a homogeneity structure of fingerprint's orientation field and neural net","authors":"Dubravko Krašnjak, V. Krivec, Siemens D D Zagreb, Croatia","doi":"10.1109/ISPA.2005.195375","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195375","url":null,"abstract":"Fingerprint classification is important part of fingerprint identification systems that work on large databases. It provides fingerprint indexing, which results in efficient matching. This work presents usage of a homogeneity structure of fingerprint's orientation field for fingerprint indexing. The homogeneity structure is described through a quad-tree structure. A description of the quad-tree structure is the input vector for neural net that was used as a classification system. The system is tested with fingerprints of three different quality levels to provide real results.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"197 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":"122595753","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: 10
Comprehensive approach to choice of compression and error-control coding algorithms for digital image transmission through communication channels 基于通信信道的数字图像传输压缩与纠错编码算法的综合选择
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.2005.195460
N. Glumov
{"title":"Comprehensive approach to choice of compression and error-control coding algorithms for digital image transmission through communication channels","authors":"N. Glumov","doi":"10.1109/ISPA.2005.195460","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195460","url":null,"abstract":"The problem of compression and error-control coding algorithms for digital image transmission through communication channels is considered. The criteria of the output image quality are discussed, and a technique for modeling faults in communication channels is proposed. In an example of the compression method based on hierarchical grid interpolation, a possibility of significant increase of noise immunity of compressed images is shown.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"21 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":"122057966","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
L/sup 2/-density estimation with negative kernels 负核的L/sup 2/-密度估计
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.2005.195380
N. Oudjane, C. Musso
{"title":"L/sup 2/-density estimation with negative kernels","authors":"N. Oudjane, C. Musso","doi":"10.1109/ISPA.2005.195380","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195380","url":null,"abstract":"In this paper, we are interested in density estimation using kernels that can take negative values, also called negative kernels. On the one hand, using negative kernels allows reducing the bias of the approximation, but on the other hand it implies that the resulting approximation can take negative values. To obtain a new approximation which is a probability density, we propose to replace the approximation by its L/sup 2/-projection on the space of L/sup 2/-probability densities. A similar approach has been proposed in I.K. Glad et al. (2003) but, in this paper, we describe how to compute this projection and how to generate random variables from it. This approach can be useful for particle filtering, particularly for the regularization step in regularized particle filters (C. Musso and N. Oudjane, June 1998) or kernel filters (M. Hurzeler and H.R. Kunsch, June 1998).","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"45 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":"134538048","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
Novel particle filtering algorithms for fixed parameter estimation in dynamic systems 动态系统中固定参数估计的粒子滤波新算法
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.2005.195382
J. Míguez, M. Bugallo, P. Djuric
{"title":"Novel particle filtering algorithms for fixed parameter estimation in dynamic systems","authors":"J. Míguez, M. Bugallo, P. Djuric","doi":"10.1109/ISPA.2005.195382","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195382","url":null,"abstract":"Standard particle filters cannot handle dynamic systems with unknown fixed parameters. In this paper, we extend the recently proposed cost-reference particle filtering methodology (CRPF) to jointly estimate the time-varying state and the static parameters of a dynamic system. In particular, we introduce three strategies that allow assigning costs to the random samples in the state-space independently of the fixed parameters. Asymptotic results that illuminate the relationships among the methods are derived, and computer simulation results are presented to illustrate their practical implementation in a vehicle navigation problem.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"411 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":"132105821","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
Digital filtration with use of synthetic DPCM 使用合成DPCM的数字滤波
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.2005.195450
W. Pogribny, B. Marciniak, T. Marciniak
{"title":"Digital filtration with use of synthetic DPCM","authors":"W. Pogribny, B. Marciniak, T. Marciniak","doi":"10.1109/ISPA.2005.195450","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195450","url":null,"abstract":"High resolution and speed of filtration can be obtained by the use of mixed formats in digital filters. In these formats the input signal is represented in delta modulation (DM) format whereas weight factors of pulse response are in the pulse code modulation (PCM) format. In this paper we suggest to synthesize codes of differential PCM (DPCM) from a few modernized DPCM (MDPCM) codes. The MDPCM quantization steps (codes) are proportional to natural powers of 2. Such approach allows to replace the multiplication with an operation of shift of bits only. Aim of this work is to increase the resolution and at the same time the fast-acting of filtration in mixed format synthesized DPCM along with PCM format (SDPCM-PCM) and suggest suitable structures of specialized processors.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"32 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":"133239138","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
Efficient implementation of multi-split LMS filtering with complex parameters 复杂参数下LMS滤波的高效实现
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.2005.195448
R. Souza, L. Resende, M. Bellanger
{"title":"Efficient implementation of multi-split LMS filtering with complex parameters","authors":"R. Souza, L. Resende, M. Bellanger","doi":"10.1109/ISPA.2005.195448","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195448","url":null,"abstract":"A simple and efficient implementation of multi-split adaptive filtering with complex parameters is introduced. The proposed scheme shares the same butterfly structure as for the case of real-valued data. This approach guarantees a simple and low-cost implementation in VLSI, FPGA or DSP. Simulation results show the performance of the multi-split LMS algorithm in the case of adaptive equalization of a 4-QAM communication system.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"25 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":"116716708","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
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